Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1994 Ford Bronco Full Size V8-302 5.0LFACTORY OEM SERVICE PROCEDURE
Repair and Diagnosis
- A L L Diagnostic Trouble Codes ( DTC )
- Relays and Modules
- Relays and Modules - Accessories and Optional Equipment
- Relays and Modules - Body and Frame
- Relays and Modules - Brakes and Traction Control
- Relays and Modules - HVAC
- Relays and Modules - Instrument Panel
- Relays and Modules - Lighting and Horns
- Relays and Modules - Power and Ground Distribution
- Relays and Modules - Powertrain Management
- Relays and Modules - Restraints and Safety Systems
- Relays and Modules - Starting and Charging
- Relays and Modules - Transmission and Drivetrain
- Relays and Modules - Wiper and Washer Systems
- Sensors and Switches
- Sensors and Switches - Accessories and Optional Equipment
- Sensors and Switches - Body and Frame
- Sensors and Switches - Brakes and Traction Control
- Sensors and Switches - Cooling System
- Sensors and Switches - Cruise Control
- Sensors and Switches - HVAC
- Sensors and Switches - Instrument Panel
- Sensors and Switches - Lighting and Horns
- Sensors and Switches - Powertrain Management
- Sensors and Switches - Computers and Control Systems
- Air Flow Meter/Sensor
- Camshaft Position Sensor
- Clutch Switch
- Coolant Temperature Sensor/Switch (For Computer)
- Cylinder Identification Sensor
- EGR Valve Position Sensor
- Air Temperature Sensor ( Ambient / Intake )
- Knock Sensor
- Manifold Pressure/Vacuum Sensor
- Oxygen Sensor
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Sensors and Switches - Emission Control Systems
- Sensors and Switches - Fuel Delivery and Air Induction
- Sensors and Switches - Ignition System
- Sensors and Switches - Computers and Control Systems
- Sensors and Switches - Restraints and Safety Systems
- Sensors and Switches - Starting and Charging
- Sensors and Switches - Transmission and Drivetrain
- Sensors and Switches - Windows and Glass
- Sensors and Switches - Wiper and Washer Systems
- Maintenance
- Alignment
- Tune-up and Engine Performance Checks
- Drive Belt
- Filters
- Hoses
- Fluids
- Brake Bleeding
- Air Bag(s) Arming and Disarming
- Fuses and Circuit Breakers
- Service Reminder Indicators
- Wheels and Tires
- Towing Information
- Service Intervals
- Severe Service Defined
- Routine Service
- Normal Service
- 5000 MI or 8000 KM
- 10000 MI or 16000 KM
- 15000 MI or 24000 KM
- 20000 MI or 32000 KM
- 25000 MI or 40000 KM
- 30000 MI or 48000 KM
- 35000 MI or 56000 KM
- 40000 MI or 64000 KM
- 45000 MI or 72000 KM
- 50000 MI or 80000 KM
- 55000 MI or 88000 KM
- 60000 MI or 96000 KM
- 65000 MI or 104000 KM
- 70000 MI or 112000 KM
- 75000 MI or 120000 KM
- 80000 MI or 128000 KM
- 85000 MI or 136000 KM
- 90000 MI or 144000 KM
- 95000 MI or 152000 KM
- 100000 MI or 160000 KM
- 105000 MI or 168000 KM
- 110000 MI or 176000 KM
- 115000 MI or 184000 KM
- 120000 MI or 192000 KM
- Severe Service
- 3000 MI or 4800 KM
- 6000 MI or 9600 KM
- 9000 MI or 14400 KM
- 12000 MI or 19200 KM
- 15000 MI or 24000 KM
- 18000 MI or 28800 KM
- 21000 MI or 33600 KM
- 24000 MI or 38400 KM
- 27000 MI or 43200 KM
- 30000 MI or 48000 KM
- 33000 MI or 52800 KM
- 36000 MI or 57600 KM
- 39000 MI or 62400 KM
- 42000 MI or 67200 KM
- 45000 MI or 72000 KM
- 48000 MI or 76800 KM
- 51000 MI or 81600 KM
- 54000 MI or 86400 KM
- 57000 MI or 91200 KM
- 60000 MI or 96000 KM
- 63000 MI or 100800 KM
- 66000 MI or 105600 KM
- 69000 MI or 110400 KM
- 72000 MI or 115200 KM
- 75000 MI or 120000 KM
- 78000 MI or 124800 KM
- 81000 MI or 129600 KM
- 84000 MI or 134400 KM
- 87000 MI or 139200 KM
- 90000 MI or 144000 KM
- 93000 MI or 148800 KM
- 96000 MI or 153600 KM
- 99000 MI or 158400 KM
- 102000 MI or 163200 KM
- 105000 MI or 168000 KM
- 108000 MI or 172800 KM
- 111000 MI or 177600 KM
- 114000 MI or 182400 KM
- 117000 MI or 187200 KM
- 120000 MI or 192000 KM
- 123000 MI or 196800 KM
- 126000 MI or 201600 KM
- 129000 MI or 206400 KM
- 132000 MI or 211200 KM
- 135000 MI or 216000 KM
- 138000 MI or 220800 KM
- 141000 MI or 225600 KM
- 144000 MI or 230400 KM
- 147000 MI or 235200 KM
- 150000 MI or 240000 KM
Technical Service Bulletins
- Engine, Cooling and Exhaust
- Engine
- Compression Check
- Camshaft, Lifters and Push Rods
- Cylinder Block Assembly
- Cylinder Head Assembly
- Drive Belts, Mounts, Brackets and Accessories
- Engine Lubrication
- Intake Manifold
- Lamps and Indicators - Engine
- Seals and Gaskets
- Timing Components
- Tune-up and Engine Performance Checks
- Water Pump
Service Precautions
Service and Repair
Specifications- Technical Service Bulletins
- Cooling System
- Coolant
- Radiator Cooling Fan
- Engine - Coolant Temperature Sensor/Switch
- Heater Core
- Heater Hose
- Lamps and Indicators - Cooling System
- Radiator
- Radiator Cap
- Sensors and Switches - Cooling System
- Temperature Gauge
- Thermostat
- Water Pump
- Service Precautions
- Service and Repair
- Specifications
- Technical Service Bulletins
- Exhaust System
- Engine
- Powertrain Management
- Relays and Modules - Powertrain Management
- Sensors and Switches - Powertrain Management
- Sensors and Switches - Computers and Control Systems
- Air Flow Meter/Sensor
- Camshaft Position Sensor
- Clutch Switch
- Coolant Temperature Sensor/Switch (For Computer)
- Cylinder Identification Sensor
- EGR Valve Position Sensor
- Air Temperature Sensor ( Ambient / Intake )
- Knock Sensor
- Manifold Pressure/Vacuum Sensor
- Oxygen Sensor
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Sensors and Switches - Emission Control Systems
- Sensors and Switches - Fuel Delivery and Air Induction
- Sensors and Switches - Ignition System
- Sensors and Switches - Computers and Control Systems
- Tune-up and Engine Performance Checks
- Computers and Control Systems
- A/C Signal
- Air Flow Meter/Sensor
- Air Temperature Sensor ( Ambient / Intake )
- Brake Signal
- Camshaft Position Sensor
- Clutch Switch
- Coolant Temperature Sensor/Switch (For Computer)
- Cylinder Identification Sensor
- Data Link Connector
- EGR Valve Position Sensor
- Engine Control Module
- Idle Speed/Throttle Actuator - Electronic
- Knock Sensor
- Main Relay (Computer/Fuel System)
- Malfunction Indicator Lamp
- Manifold Pressure/Vacuum Sensor
- Oxygen Sensor
- Relays and Modules - Computers and Control Systems
- Sensors and Switches - Computers and Control Systems
- Air Flow Meter/Sensor
- Camshaft Position Sensor
- Clutch Switch
- Coolant Temperature Sensor/Switch (For Computer)
- Cylinder Identification Sensor
- EGR Valve Position Sensor
- Air Temperature Sensor ( Ambient / Intake )
- Knock Sensor
- Manifold Pressure/Vacuum Sensor
- Oxygen Sensor
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Throttle Position Sensor
- Transmission Position Sensor/Switch
- Vehicle Speed Sensor
- Service Precautions
Description and Operation
Testing and Inspection- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Reading Diagnostic Trouble Codes
- Base Ignition Timing Check
- Continuous Monitor Diagnostic Test Mode (Wiggle Test)
- Cylinder Balance Test
- Output State Diagnostic Test Mode
- Quick Test Appendix (Detailed Testing Instructions)
- Clearing Diagnostic Trouble Codes
- Reading Diagnostic Trouble Codes
- Diagnostic Trouble Code Tests and Associated Procedures
- Symptom Related Diagnostic Procedures
- Diagnostic Routines Preface
- Diagnostic Routines Index
- Diagnostic Routines
- 1 - No Crank
- 2 - Hard Start/Long Crank/Erratic Start/Erratic Crank
- 3 - Runs Rough At Idle; Stall After Start/At Idle
- 4 - No Start/Normal Crank
- 5 - Slow Return to Idle
- 6 - Misses At Idle; Rolling Idle
- 7 - Fast Idle; Diesels/Runs On
- 8 - Low/Slow Idle; Stalls/Quits During Deceleration
- 9 - Bucks/Jerks
- 9 - Hesitation/Stumble During Acceleration
- 9 - Misses/Runs Rough/Stalls During Acceleration/Cruise
- 11 - Surges During Acceleration/Cruise
- 12 - Backfires
- 13 - Lack/Loss of Power
- 14 - Spark Knock During Acceleration/Cruise
- 15 - Poor Fuel Economy
- 16 - Emissions Compliance
- 17 - Manual Transmission Concern (SIL)
- 17 - Warning Indicators (MIL, DCL, SIL, 4X4 Low)
- 18 - Auto Trans Shift Concerns (Up/Downshift, Engagement)
- 19 - Tachometer/Speedometer Inoperative
- 20 - High Oil Consumption, Leaks
- 21 - Overheating, Electric Cooling Fan Non-Operational
- 22 - Runs Cold, Electric Cooling Fan Always On
- 23 - Visible Exhaust Smoke
- 24 - Fuel Odor In Engine Compartment
- 25 - Engine Noise
- 26 - Vibration Concerns
- 29 - Lack of Air Conditioning (A/C Not Functioning)
- 30 - A/C Always On
- 31 - A/C Does Not Cut Off Under WOT Conditions
- 32 - No Symptoms Present EEC-IV Quick Test
- 33 - Stoplamp Always On/Off
- 34 - Exhaust Odor (Sulphur/Rotten Egg Smell)
- Pinpoint Tests
- AA - No Start Test
- AA - Test Schematic
- AA - Testing Notes
- AA1 - Identify Type of No Start
- AA2 - Attempt to Crank Engine
- AA3 - Check For VREF At Throttle Position Sensor
- AA4 - Check For Spark At Plugs
- AA5 - Check For Spark At Coil
- AA6 - Check Continuity of Ignition Ground Circuit
- AA7 - Isolation of Problem to Spout Circuit
- AA8 - Check Spout Signal
- AA9 - Check Spout and PIP Circuit For Short to Power
- AA10 - Check Spout and PIP Circuit For Shorts to Ground
- AA11 - Isolate Short(s) In PCM
- AA12 - Check PIP Signal
- AA13 - Check Continuity of PIP Circuit
- AA14 - Spout Signal Verification
- AA15 - Attempt to Restart Vehicle
- AA16 - Check Continuity of PIP Circuit
- AA17 - Check Continuity of PIP Circuit
- AA18 - Check PIP Circuit For Short to Power and Ground
- AA19 - Isolate Shorts In PCM
- AA20 - Check PIP Signal
- AA21 - Check Fuel Pressure
- AA25 - Check VPWR Circuit Voltage
- AA26 - Check VPWR Continuity
- B - Vehicle Battery
- B - Test Schematic
- B - Testing Notes
- B1 - Check Battery Voltage
- B2 - Check Power Ground Circuit Continuity
- B3 - Check Open Between SIG RTN, PWR, GND Circuit At PCM
- B4 - Check Signal Return Circuit Continuity
- B5 - Check KAPWR Circuit Voltage At EEC Power Relay
- B6 - Check Ignition Circuit Voltage At EEC Power Relay
- B7 - Check Power Ground Circuit Continuity
- B8 - Check VPWR Circuit Continuity
- B9 - Check VPWR Circuit Voltage
- B10 - Check Continuity GND Circuit Between PWR Relay And CCRM
- B11 - Check Ground Circuit Continuity In CCRM
- C - Reference Voltage
- C - Testing Notes
- C - Wiring Diagram
- C1 - Check Vehicle Battery Power Circuit
- C2 - Check VREF Voltage
- C3 - Check VREF and SIG RTN Circuits For Continuity
- C4 - Check For Excess Voltage On VREF Circuit
- C5 - Check For Shorted Throttle Position Sensor
- C6 - Check For Shorted EVP/PFE/DPFE Sensor
- C7 - Check For Shorted MAP/BARO Sensor
- C8 - Check VREF For Short to Ground
- DA - Intake Air and Engine Coolant Temperature Sensors
- DA - Pinpoint Test Schematic
- DA - Sensor Data
- DA - Testing Notes
- DA1 - Check ECT or IAT Sensor
- DA2 - Check VREF Circuit Voltage At Throttle Position Sensor
- DA3 - Check Resistance of Temperature Sensor - Engine Off
- DA4 - Check Resistance of Temperature Sensor - Engine Running
- DA10 - Induce DTC 117 or 112
- DA11 - Check Continuity of Sensor Signal and SIG RTN Circuits
- DA20 - Induce DTC 118 or 113
- DA21 - Check VREF Circuit Voltage At Throttle Position Sensor
- DA22 - Check Temperature Sensor Circuit For Short to Ground
- DA90 - Check Sensor
- DA91 - Check EEC-IV Vehicle Harness
- DA92 - Check PCM and Vehicle Harness Connectors
- DA100 - Engine Too Cold
- DA101 - Engine Too Hot
- DB - EGR Temperature Sensor
- DB - Testing Notes
- DB - Testing Schematic
- DB1 - Continuous Memory Code 327: Verify Condition
- DB2 - Induce Opposite Code
- DB3 - Check EGRT Circuit For Shorts to Ground
- DB5 - Continuous Memory Code 337: Verify Condition
- DB6 - Check EGRT Circuit For Shorts to Power
- DB7 - Induce Opposite Code
- DB8 - Check Continuity of Harness Circuits
- DB10 - Continuous Memory Code 326: Check Engine Idle
- DB11 - Verify Condition
- DB12 - Check Continuity of Harness Circuits
- DB20 - Continuous Memory Code 332: Check EGR Valve Holds Vacuum
- DB21 - Check EGR Valve Operation
- DB22 - Check For Continuous Memory Code 326
- DB90 - Check EEC-IV Vehicle Harness
- DB91 - Check PCM and Harness Connectors
- DC - Mass Air Flow (MAF) Sensor
- DC - Sensor Data
- DC - Testing Notes
- DC - Testing Schematic
- DC1 - Check VPWR Circuit Voltage
- DC2 - Check VPWR Circuit Voltage
- DC3 - Check MAF Sensor Ground
- DC10 - Check For Intermittent Sensor
- DC11 - Monitor MAF Circuit Under Simulated Road Shock
- DC12 - Check Vehicle Harness For Intermittent Opens or Shorts
- DC13 - Air Leak at MAF Sensor
- DC14 - Check Continuity of MAF and VPWR Circuits
- DC15 - Check MAF Circuit For Shorts to GND and MAF RTN Circuit
- DC16 - Check PWR GND Circuit Continuity
- DC17 - Check MAF RTN Circuit Continuity
- DC18 - Check MAF Circuit For Short to Ground
- DC19 - Check MAF Circuit Output
- DC20 - Check MAF Circuit Output
- DC21 - Rerun Self-Test W/MAF Sensor Disconnected
- DC22 - Check MAF Circuit For Short to VPWR
- DD - EGR Position Sensor/Vacuum Solenoid/Atmospheric Solenoid
- DD - Testing Notes
- DD - Testing Schematic
- DD1 - Attempt to Generate DTC 337
- DD2 - Measure EGRP VREF Voltage
- DD3 - Check EGRP SIG RTN Circuit Continuity
- DD4 - Check EGRP Circuit For Short to Ground
- DD10 - Attempt to Generate DTC 327
- DD11 - Check Continuity of EGRP Sensor SIG Circuit
- DD12 - Check EGRP SIG Circuit For Short to Power
- DD13 - Check For Vacuum at EGRV Solenoid Valve Output Port
- DD20 - Check EGRV/EGRA Solenoid Resistance
- DD21 - Check Solenoid VPWR Circuit
- DD22 - Check Solenoid Circuit Continuity
- DD23 - Check Solenoid Circuit: Short to Power/Short to Ground
- DD30 - Verify Vacuum to EGR Valve
- DD31 - Check EGR Valve Vacuum Hose
- DD32 - Check Vacuum to EGRV Solenoid
- DD33 - Check EGRV Solenoid Valve Function
- DD34 - Check EGRV Solenoid Output Port Vacuum Hose
- DD35 - Check EGRA Solenoid Vacuum Hose
- DD90 - Check For Intermittent Sensor Damage
- DD91 - Check For Intermittent Harness Damage
- DD92 - Check PCM Connector
- DD100 - Check EGR Valve Function
- DD101 - Check EGR Valve Vacuum Line
- DD102 - Check EGRA Solenoid Vacuum Line
- DD103 - Check EGRV/EGRA Solenoid and Harness Circuits
- DE - Flexible Fuel (FF) Sensor
- DE - Testing Notes
- DE1 - KOEO Code 193: Check FF Sensor VPWR Circuit
- DE2 - Check Continuity of FF Sensor Battery Ground Circuit
- DE3 - Check Continuity of FF Sensor Signal Circuit
- DE4 - Check For Short to Power In FF Sensor Signal Circuit
- DE5 - Check For Short to Ground In FF Sensor Signal Circuit
- DE6 - Check Stability of FF Sensor Signal Output Frequency
- DE7 - Check For Fuel Separation
- DE8 - Compare Expected FF Sensor Response to Actual Response
- DE9 - Perform Fuel Composition Test
- DE10 - Compare Methanol Percentage to Sensor Response
- DF - Manifold Absolute Pressure (MAP)/Barometric Pressure (BP)
- DG - Knock Sensor
- DH - Throttle Position (TP) Sensor
- DH - Sensor Data
- DH - Test Schematic
- DH - Testing Notes
- DH1 - Check for Other DTCs
- DH2 - Check For Stuck Throttle Plate
- DH3 - Attempt to Generate DTC 122
- DH4 - Check VREF Circuit Voltage
- DH5 - Check TP Circuit For Shorts to Power
- DH10 - Attempt to Generate DTC 123 or 121
- DH11 - Check VREF Circuit Voltage
- DH12 - Check TP Circuit Continuity
- DH13 - Check TP Circuit For Shorts to Ground
- DH20 - Perform Dynamic Response Test At Wide Open Throttle
- DH21 - Check TP Sensor Movement During Dynamic Response Test
- DH90 - Monitor TP Circuit Under Simulated Road Shock
- DH91 - Measure TPS Voltage While Exercising Sensor
- DH92 - Check EEC Vehicle Harness
- DH93 - Check PCM and Harness Connectors
- DH94 - Monitor TP Circuit Under Simulated Road Shock
- DH95 - Check EEC Vehicle Harness
- DH96 - Check PCM and Harness Connectors
- DL - PFE/DPFE Sensor; EVR Solenoid Testing
- DL - Testing Notes
- DL - Testing Schematic
- DL1 - Induce DTC 337
- DL2 - Measure VREF Circuit Voltage at PFE/DPFE Sensor
- DL3 - Check PFE/DPFE Circuit Continuity
- DL4 - Check PFE/DPFE Circuit For Shorts to Ground and SIG RTN
- DL5 - Induce DTC 327
- DL6 - Measure VREF Circuit Voltage at PFE/DPFE Sensor
- DL7 - Check PFE/DPFE Circuit For Short to Power
- DL8 - Remove Garage Forced Air
- DL9 - Check PFE/DPFE Sensor Pressure Input Hose(s)
- DL10 - Measure VREF Circuit Voltage at PFE/DPFE Sensor
- DL11 - Measure EVR Solenoid Resistance
- DL12 - Check VPWR Circuit Voltage at EVR Solenoid
- DL13 - Check EVR Circuit Continuity
- DL14 - Check EVR Circuit For Short to Power or Ground
- DL20 - Remove Garage Forced Ventilation
- DL21 - Rerun Self-Test w/EGR Vacuum Line Disconnected
- DL22 - Check PFE/DPFE Sensor Pressure Input Hose For Blockage
- DL23 - Check PFE/DPFE Signal Voltage With Engine at Idle
- DL24 - Check EGR Valve For Binding
- DL25 - Check Exhaust Restriction
- DL26 - Check PFE Signal Voltage
- DL27 - Check PFE and SIG RTN Harness Circuit Continuity
- DL28 - Check PFE Harness Circuit For Shorts to Power
- DL30 - Verify Vacuum Present At EGR Valve
- DL31 - Check Vacuum Input to the EVR Solenoid
- DL34 - Check Signal at the PFE/DPFE Inlet Hose(s)
- DL35 - Attempt to Generate KOEO Code 337
- DL36 - Measure VREF Circuit Voltage
- DL37 - Check PFE/DPFE Harness Circuit Continuity
- DL38 - Check PFE/DPFE Harness For Shorts to Ground and SIG RTN
- DL50 - Code 336 or 337: Check For EVR Malfunction
- DL51 - Check DPFE Signal Voltage With Engine At Idle
- DL52 - Check EGR Valve For Binding
- DL90 - All Continuous Memory EGR DTC: Intermittent Verification
- DL91 - All Continuous Memory EGR DTCs: Visual Inspection
- DL92 - All Continuous Memory EGR DTCs: Code Definitions
- DL93 - Wiggle Test Sensor
- DL94 - Wiggle Test EEC-IV Vehicle Harness
- DL95 - Check PCM Connector
- DL96 - Check EGR Valve For Sticking
- DL97 - Check EVR Solenoid and Hoses
- DL98 - Check EVR Solenoids For Shorts
- DL99 - Check EVR Harness Circuit For Intermittents
- DL100 - Inspect PFE Supply Hose For Blockage
- DL101 - Check Vacuum at EGR Valve
- DL102 - Check For Stuck Open EGR Valve
- DL105 - Check EGR Valve Operation
- DL106 - Inspect EVR Solenoid Hoses
- DL107 - Inspect PFE/DPFE Signal Line(s)
- DL108 - Inspect EVR Solenoid
- DN - EGR Valve Position Sensor/EGR Vacuum Regulator Solenoid
- DN - Testing Notes
- DN - Testing Schematic
- DN1 - Attempt to Generate DTC 337
- DN2 - Check VREF Circuit Voltage
- DN3 - Check EVP Circuit Continuity
- DN4 - Check EVP Circuit For Short to Ground
- DN5 - Attempt to Generate DTC 327
- DN6 - Check VREF Circuit Voltage
- DN7 - Check EVP Circuit For Short to Power
- DN10 - Check Resistance of EVR Solenoid
- DN11 - Check VPWR Circuit Voltage
- DN12 - Check EVR Circuit Continuity
- DN13 - Check EVR Circuit For Short to Power or Ground
- DN20 - Check For DTC 558
- DN21 - Rerun KOEO and KOER Self-Test W/EGR Vacuum Disconnected
- DN22 - Check EVP Sensor and EGR Valve Operation
- DN23 - Check EVP Signal Voltage
- DN24 - Fault Isolation Check
- DN25 - Check EVP Sensor and EGR Valve Operation
- DN26 - Check EVP Signal Voltage
- DN27 - Substitute EVP Sensor
- DN40 - Verify Vacuum is Present at EGR Valve
- DN41 - Verify Vacuum Supply to EVR Solenoid
- DN42 - Check Vacuum Hose Between EVR Solenoid & EGR Valve
- DN43 - Check EVP Sensor and EGR Valve Operation
- DN44 - Check EGR Valve Function
- DN90 - Check Intermittent Sensor
- DN91 - Check Vehicle Harness For Intermittent Opens or Shorts
- DN92 - Check Voltage While Exercising EGR Valve
- DN110 - Check EGR Valve Function
- DN111 - Check Vacuum Hose to and From EVR Solenoid
- DN112 - Check EVR Solenoid and Harness For Intermittent Fault
- DN115 - Check EGR Vacuum w/Engine Running
- DN116 - Check EVR Signal For Intermittent Short
- DN117 - Check EVP Signal At PCM With Engine Idling
- DP - Vehicle Speed Sensor (VSS)
- DR - Cylinder Identification (CID) Sensor
- DR1 - Will Engine Start
- DR3 - Check CID Circuit Continuity to PCM
- DR4 - Check CID Circuit For Short to Power
- DR5 - Check CID Circuit For Short to Ground
- DR6 - Check PWR Circuit Voltage to CMP
- DR7 - Check For Shorts In PCM
- DR8 - Check CMP or CKP Sensor Output
- DR10 - Check For VPWR to Camshaft Position Sensor
- DR20 - Check CID Wiring
- DR21 - Road Test
- DS - Programmable Speedometer/Odometer Module
- FD - Brake On/Off (BOO) Switch
- FD - Testing Notes
- FD - Testing Schematic
- FD1 - Verify Brake Was Pressed
- FD2 - Check Operation of Stoplamps
- FD3 - Check For BOO Circuit Cycling
- FD4 - Check For Power to Brake Switch
- FD5 - Verify Brake Switch Is Not Always Closed
- FD6 - Check For Short to Power In PCM
- FD7 - Check For Short to Power In Shiftlock Actuator
- FD90 - Check For Proper Stoplamp Switch Installation
- FD91 - Check Stoplamp Ground
- FD92 - Check Stoplamp/BOO Circuits For Short to Power
- FD93 - Check Stoplamp Circuit Continuity
- FD94 - Check BOO Circuit Continuity
- FD99 - Road Test
- FE - Electrical Load Inputs
- FE - Testing Notes
- FE - Testing Schematic
- FE1 - Electrical Load Switch Test Direction
- FE10 - Check Voltage of BLR Circuit, Low Speed Position
- FE11 - Check Voltage of BLR Circuit, High Speed Position
- FE12 - Check BLR Circuit For Short to Power
- FE13 - Check BLR Circuit Continuity
- FE14 - Check BLR Circuit For Short to Ground
- FE20 - Check Voltage of DRL Circuit, Park Brake & Headlamps On
- FE21 - Check Voltage of DRL Circuit, Park Brake & Headlamps Off
- FE22 - Check DRL Circuit For Short to Power
- FE23 - Check DRL Circuit Continuity
- FE24 - Check DRL Circuit For Short to Ground
- FE30 - Check Voltage of HDL Circuit, Headlamps Off
- FE31 - Check Voltage of HDL Circuit, Headlamps On
- FE32 - Check HDL Circuit Continuity
- FE33 - Check HDL Circuit For Short to Ground
- FE34 - Check HDL Circuit For Short to Power
- FE40 - Check Voltage of DEF Circuit, Defrost Off
- FE41 - Check Voltage of DEF Circuit, Defrost On
- FE42 - Check DEF Circuit For Short to Power
- FE43 - Check DEF Circuit For Continuity
- FE44 - Check DEF Circuit For Short to Ground
- FF - Power Steering Pressure (PSP) Switch
- FF - Testing Notes
- FF - Testing Schematic
- FF1 - Attempt to Eliminate DTC 519
- FF2 - Check Continuity of PSPS Circuit
- FF3 - Check PSPS Operation
- FF4 - Check PSPS Circuits For Shorts
- FF5 - Verify Operator Interaction DTC 521
- FF6 - Determine If PCM Can Identify an Open Circuit
- FF7 - Check PSPS Circuits For Shorts
- FF8 - Check PSPS State With KOEO vs. KOER
- FF9 - Check PSPS State With Engine Running and Load vs. No Load
- FF10 - Attempt to Eliminate DTC 519
- FF11 - Check PSPS Circuit For Short
- FF15 - Check PSPS Operation
- FF16 - Check Continuity of PSPS Circuits
- FF20 - Verify Operator Interaction
- FF21 - Determine If the PCM Can Identify A Closed Circuit
- FF22 - Check Continuity of PSPS Circuit
- FF23 - Check PSPS State W/Key On Engine Off Vs. Engine Running
- FF24 - Check PSPS State w/Engine Running and Load vs. No Load
- G - In-Range MAF/TPS/Fuel Injector Pulse Width Test
- G - Testing Notes
- G1 - Check for Idle Air DTCs: Initiate KOER Self-Test
- G2 - Throttle Position Sensor Integrity
- G3 - Check Idle
- G4 - Check Throttle Body
- G5 - Check MAP/BARO Sensor Output
- G6 - Check Intake Air Temperature (IAT) Sensor
- G7 - Visually Inspect MAF Sensor
- G8 - Check MAF Sensor
- G9 - Visual Vacuum Checks
- G10 - Check Fuel Pressure
- G11 - Check System's Ability to Hold Fuel Pressure
- G12 - Cylinder Balance Test
- H - Fuel Control
- H - Fuel Injector Resistance Specification Table
- H - Fuel Pressure Specification Table
- H - Test Schematic
- H - Testing Notes
- H1 - Check For Diluted Engine Oil
- H2 - Check Fuel Pressure
- H3 - Check Systems Ability to Hold Fuel Pressure
- H4 - Fuel Delivery Test
- H5 - Cylinder Balance Diagnostic Test Mode: MFI Engines
- H6 - Cylinder Balance Diagnostic Test Mode: SFI Engines
- H7 - Check Resistance of Injector(s) and Harness MFI Engines
- H8 - Check Resistance of Injector(s) and Harness SFI Engines
- H9 - Check Continuity of Fuel Injector Harness
- H10 - Check Injector Harness Circuit For Short to Power/Ground
- H11 - Isolate Faulty Injector Circuit
- H12 - Check Injector Driver Signal
- H13 - Check Secondary Air Injection Operation
- H14 - Check HO2S Integrity
- H15 - Check HO2S On Engines With MAP Sensors
- H16 - Check HO2S On Engines With MAF Sensor
- H17 - Check Continuity of HO2S Signal and HO2S Ground
- H18 - Check HO2S Circuit For Short to Ground
- H19 - Check HO2S For Short to Ground
- H20 - Attempt to Eliminate DTC 136, 172 or 176 w/MAP Sensor
- H21 - Check Resistance of Heated Element On HO2S
- H22 - Check For Power At HO2S Harness Connector
- H23 - Check Continuity of Power Ground Circuit
- H24 - Check HO2S Signal For Short to Power
- H25 - Check For Short to Power
- H26 - Check HO2S For Short to Ignition Run Circuit
- H27 - Attempt to Generate DTC 136, 172, or 176
- H28 - Check MAP Sensor For Vacuum Leak
- H29 - Check For Loss of Vacuum to MAP Sensor
- H30 - HO2S Check
- H90 - Check Continuous Monitor Diagnostic Test Mode
- H91 - Continuous Monitor DTM Test Drive Check
- H92 - Check HO2S Switching
- HA - Adaptive Fuel
- HA - Fuel Injector Resistance Specifications
- HA - Fuel Pressure Specifications
- HA - MAP Sensor Graph
- HA - MAP/BARO Sensor Barometric Pressure Graph
- HA - MAP/BP Sensor Data
- HA - Testing Notes
- HA1 - Check For Other Codes
- HA2 - Check Fuel Pressure
- HA3 - Check System's Ability to Hold Fuel Pressure
- HA4 - Check MAP/BARO Frequency
- HA5 - Diagnostic Test Mode (DTM): MFI Engines
- HA6 - Diagnostic Test Mode (DTM): SFI Engines
- HA7 - Check Resistance of Injector(s) and Harness - MFI Engines
- HA8 - Check Resistance of Injector(s) and Harness - SFI Engines
- HA9 - Check Continuity of Fuel Injector Harness
- HA10 - Check Injector Harness For Short to Power or Ground
- HA11 - Isolate Faulty Injector Circuit
- HA12 - Check Injector Driver Signal
- HB - Flexible Fuel (FF) Control
- HB - Fuel Pressure Specification Table
- HB - Single Injector Resistance Specification Table
- HB - Testing Cautions
- HB - Testing Notes
- HB1 - Check For Fuel Diluted Engine Oil
- HB2 - Check Fuel Pressure
- HB3 - Check System's Ability to Hold Fuel Pressure
- HB4 - Fuel Delivery Test
- HB5 - Cylinder Balance Diagnostic Test Mode (DTM)
- HB6 - Check Resistance of Injector(s) and Harness
- HB7 - Check Continuity of Fuel Injector Harness
- HB8 - Check Injector Harness For Short to Power or Ground
- HB9 - Check Injector Driver Signal
- HB10 - Check HO2S Integrity
- HB11 - Check HO2S On Engines With MAF Sensor
- HB12 - Check Continuity of HO2S and HO2S Ground
- HB13 - Check HO2S Circuit For Short to Ground
- HB14 - Check HO2S For Short to Ground
- HB15 - Check Resistance of Heater Element On HO2S
- HB16 - Check Power at HO2S Harness Connector
- HB17 - Check Continuity of Power Ground Circuit
- HB18 - Check HO2S Signal For Short to Power
- HB19 - Check For Short to Power
- HB20 - Check HO2S For Short to Ignition Run Circuit
- HB21 - Attempt to Generate DTC 136, 172, or 176
- HB22 - HO2S Check
- HB23 - Check Continuous Monitor Diagnostic Test Mode (DTM)
- HB24 - Continuous Monitor DTM Test Drive Check
- HB25 - Check HO2S Switching
- J - Fuel Pump Circuit
- J - Testing Notes
- J - Testing Schematic
- J1 - Check For VPWR to Fuel Pump Relay
- J2 - Check Fuel Pump Relay
- J3 - Check Fuel Pump Circuit For Short to Power
- J4 - Check Fuel Pump Circuit For Short to Ground
- J5 - Check Fuel Pump Circuit Continuity
- J10 - Does Engine Start
- J11 - Verify That Fuel Pump Is Off
- J12 - Check For Fuel Pump Relay Always Closed
- J13 - Check FPM Circuit Continuity
- J15 - Check Inertia Fuel Shutoff (IFS) Switch
- J20 - Does Engine Start
- J21 - Check For B(+) to Fuel Pump Relay
- J22 - Check Power to Pump Circuit Continuity
- J26 - Check HO2S Circuit For Short to Power
- J90 - Check EEC-IV Harness
- J91 - Check FPM Circuit
- J92 - Check For Shorts to Power
- J93 - Check For DTC 556
- J94 - Check EEC-IV Harness
- J95 - Check EEC-IV Harness
- J96 - Check Left/Front HO2S Circuit For Short to Power
- J99 - Road Test
- KA - EGR Vacuum Regulator Solenoid
- KA - Testing Notes
- KA - Testing Schematic
- KA1 - Enter Output State Check
- KA2 - Check EVR Solenoid Electrical Operation
- KA3 - Check EVR Solenoid Valve Operation
- KA4 - Check Vacuum Hose From the EVR Solenoid to Throttle Body
- KA5 - Check Vacuum Hose From EVR Solenoid to EPT
- KA6 - Check EVR Solenoid VPWR
- KA7 - Check Continuity of EVR Solenoid Signal Harness Circuit
- KA8 - Check EVR Solenoid Signal Harness Circuit For Short
- KB - Canister Purge (CANP) Valve
- KB - Test Schematic
- KB - Testing Notes
- KB1 - Enter Output State Diagnostic Test Mode (DTM)
- KB2 - Check CANP Valve Electrical Operation
- KB3 - Check CANP Valve Resistance
- KB4 - Check CANP Valve For Vacuum Leaks
- KB5 - Check CANP Valve Electro-Mechanical Operation
- KB6 - Check For Vacuum to CANP Valve Input Port
- KB7 - Check VPWR Circuit Voltage
- KB8 - Check Continuity of CANP Circuit
- KB9 - Check CANP Circuit For Short to Power
- KB10 - Check CANP Circuit For Short to Ground
- KC - Secondary Air Injection Solenoids
- KC - Testing Notes
- KC - Testing Schematic
- KC1 - Visually Inspect Vacuum Hoses
- KC2 - Check Air Vacuum Lines
- KC3 - Attempt to Eliminate DTC 312
- KC4 - Attempt to Eliminate DTC 313
- KC5 - Enter Output State Diagnostic Test Mode
- KC6 - Check AIRB and AIRD Solenoids Electrical Operation
- KC7 - Check AIRB and AIRD Solenoids For Internal Vacuum Leaks
- KC8 - Check AIRB and AIRD Solenoid For Vacuum Cycling
- KC9 - Check Voltage of VPWR Circuit
- KC10 - Measure AIRB and AIRD Solenoid Resistance
- KC11 - Check Circuit Continuity
- KC12 - Check For Short to Ground
- KC13 - Check For Short to Power
- KD - Canister Purge (CANP) Solenoid
- KD - Testing Notes
- KD - Testing Schematic
- KD1 - Enter Output State Diagnostic Test Mode
- KD2 - Check Canister Purge Solenoid Electrical Operation
- KD3 - Check Canister Purge Solenoid For Vacuum Leaks
- KD4 - Check Canister Purge Solenoid For Mechanical Operation
- KD5 - Check For Vacuum to Canister Purge Solenoid
- KD6 - Check CANP Solenoid Resistance
- KD7 - Check VPWR Circuit Voltage
- KD8 - Check Continuity of CANP Circuit
- KD9 - Check CANP Circuit For Short to Ground
- KD10 - Check CANP Circuit For Short to Power
- KE - Idle Air Control Control Solenoid
- KE - Testing Notes
- KE - Testing Schematic
- KE1 - Check For RPM Drop
- KE2 - Check For Other DTCs
- KE3 - Check For Other DTCs
- KE4 - Measure IAC Solenoid Resistance
- KE5 - Check For Internal Short to IAC Solenoid Case
- KE6 - Check VPWR Circuit Voltage
- KE7 - Check IAC Circuit Continuity
- KE8 - Check IAC Circuit For Short to Ground
- KE9 - Check IAC Circuit For Short to Power
- KE10 - Check For IAC Signal From the PCM
- KE11 - Check Idle
- KE12 - Check For Problems Affecting Proper Engine Speed
- KE15 - Engine RPM Error During Self-Test
- KE16 - Check For Condition Affecting Idle
- KE17 - Check For Internal Short to IAC Solenoid Case
- KE18 - Check IAC Circuit For Short to Ground
- KE19 - Check PCM Output
- KE30 - Check For Air Leaks
- KE31 - Check For Vacuum Leaks at Idle
- KE32 - Inspect Throttle Body and Linkage
- KE33 - Check Idle Speed
- KE35 - Check For Plugged Air Filter
- KE36 - Check IAC Solenoid/Throttle Body for Damage/Contam.
- KE37 - Check Idle Speed
- KM - WOT A/C Cut-Off (WAC) A/C Demand
- KM - Test Schematic
- KM - Testing Notes
- KM1 - No A/C: Check For Voltage to A/C Clutch
- KM2 - Check For Power On A/C Demand Circuit
- KM3 - Check Continuity Between WAC Relay and A/C Relay
- KM5 - Check WAC Circuit For Short to Ground
- KM6 - Check For Voltage at ACCS/ACD Input to PCM
- KM7 - Check WAC Relay
- KM8 - Check ECT and TP Inputs
- KM15 - No A/C Cutout At WOT: Output State Diagnostic Test Mode
- KM16 - Check For VPWR to WAC Relay
- KM17 - Check For WAC Cycling
- KM18 - Check WAC Circuit Continuity
- KM19 - Check WAC Circuit For Short to Power
- KM30 - Check A/C Input Circuitry
- KM31 - Check A/C Input Circuit
- KM32 - Cycle A/C Demand Switch
- KM40 - Check A/C Input
- KM41 - Check For Short to Power In PCM
- KM50 - No A/C - Attempt to Generate Code 539
- KM51 - Check For B+ Voltage to A/C Relay
- KM52 - Check Power to Clutch Circuit Continuity
- KM53 - Check A/C Relay
- KM55 - Check ACD Circuit Continuity to Low Pressure Switch
- KM56 - Measure Resistance of LP Switch
- KM57 - Check ACD Circuit Continuity From LP Switch to PCM
- KM60 - Check For Ignition Run Voltage to A/C Relay
- KM61 - Check A/C Relay
- KM62 - Check A/C ON Circuit For Short to Power
- KM63 - Check A/C ON Circuit For Short to Ground
- KM64 - Check A/C ON Circuit Continuity
- KM70 - Check A/C Input
- KM71 - Check Low Pressure Switch
- KM72 - Check ACD Circuit to PCM For Short to Ground
- KM80 - A/C Always On: Check Clutch Circuit For Short to Power
- KM81 - Check A/C Relay
- KN - Fuel Pressure Regulator Control Solenoid
- KN - Testing Schematic
- KN1 - DTC 554, Enter Output State Diagnostic Test Mode
- KN2 - Fuel Pressure Regulator Solenoid Electrical Operation
- KN3 - Check Vacuum Between Manifold Vacuum and FPRC Solenoid
- KN4 - Check Vacuum Signal Between FPRC Solenoid and Manifold
- KN5 - Check Vacuum Between FPRC Solenoid and FPR
- KN6 - Exercise the FPRC Solenoid Valve
- KN7 - Check FPRC Solenoid VPWR
- KN8 - Check FPRC Circuit Continuity
- KN9 - Check FPRC Circuit For Short to Power and Ground
- KP - Octane Adjust
- KP - Testing Notes
- KP1 - Inspect Octane Adjust Inline Connector
- KP2 - Check For Modification Decal
- KP3 - Check For DTC 341
- KP4 - Check Continuity of Octane Adjust Circuit
- KP5 - Check For DTC 111
- KP6 - Verify In-Line Connector Shorting Bar Is Installed
- KP7 - Check For Modification Decal
- KP8 - Check For TSB
- KP9 - Remove Octane Adjust Shorting Bar
- KP10 - Check Octane Adjust Circuit For A Short to Ground
- KP11 - Check PCM Integrity
- M - Dynamic Response Test
- ML - Self-Test Output/Malfunction Indicator Lamp
- ML - Testing Notes
- ML - Testing Schematic
- ML1 - Malfunction Indicator Light Always On
- ML4 - Malfunction Indicator Light Never On
- ML5 - Check For B+ at MIL Fuse
- ML6 - Check For B+ at MIL Bulb/Socket
- ML7 - Check MIL Bulb Response to Grounding
- ML8 - Check MIL Circuit Continuity
- ML10 - Malfunction Indicator Light Intermittent On
- ML15 - Malfunction Indicator Light Flashing with Erratic Idle
- ML20 - "Check Engine" Message Displayed
- ML25 - Continuous Code 529, "Check Engine"/"Check DCL"
- NA - Ignition Diagnostic Monitor -- Distributor Ignition
- NA - Testing Notes
- NA - Testing Schematic
- NA1 - Erratic Ignition
- NA2 - Check IDM Circuit Continuity
- NA3 - Check IDM Circuit Continuity
- NA5 - Check IDM Circuit For Shorts to Power (Excluding VREF)
- NA6 - Check IDM Circuit For Short to VREF and PIP
- NA7 - Check IDM Circuit For Short to Ground
- NA8 - Check ICM
- NA9 - Check EEC Harness
- NA10 - Check PCM and Harness Connectors
- NA11 - Check PCM For Short to Power
- NA12 - Check PCM For Short to Ground
- PA - Spark Timing Check -- Distributor Ignition
- QA - No Codes/Codes Not Listed
- QA - Test Schematic
- QA - Testing Notes
- QA1 - Check VREF Voltage At Self-Test Connector
- QA2 - Check SIG RTN Circuit Continuity
- QA3 - Check STI Circuit Continuity
- QA4 - Check STO Circuit Continuity
- QA5 - Check HO2S Signal For Short to Power
- QA6 - Isolate Short to Harness or HO2S
- QA7 - Check STO Circuit For Short to Ground
- QA8 - Check If Power Relay Is Always On
- QA9 - Check VPWR Circuit For Short to Power
- QA10 - Check MIL Function
- QB - Continuous Memory Service Code 15/512
- QC - Output State Check Not Functioning
- S - System Check
- TA - Park/Neutral Position / Clutch Pedal Position Switches
- TA - Testing Notes
- TA - Testing Schematic
- TA1 - System Identification
- TA2 - Check PNP/CPP Input
- TA3 - Check CPP/PNP Switch Integrity
- TA4 - Check CPP Circuit For Short to Ground
- TA5 - Check PNP/CPP Switch
- TA6 - Check PNP/CPP Harness
- TA7 - Check CPP Switch
- TA8 - Check PNP Input
- TA9 - Check PNP Switch
- TA12 - Check PNP Circuit For Short to Ground or Closed Switch
- TA15 - Does Engine Start
- TA16 - Check PNP/Start Circuit For Short to Power
- TA17 - Check PNP Circuit Continuity
- TB - 4X4 Low/Transmission Control TCIL-TCS-TCSM
- TB - Testing Notes
- TB - Testing Schematic
- TB1 - Diagnostic Trouble Codes 47, 633 and 691
- TB2 - Diagnostic Trouble Codes 65, 632 and 653
- TB3 - Diagnostic Trouble Codes 97, 623 and 631
- TB4 - Cycle the Appropriate Circuit: (4X4 Low or Transmission)
- TB5 - Check Harness Circuit(s) For Short to Ground
- TB6 - Check KPWR Through TCIL Circuit
- TB7 - Check Output Driver Signal
- TB8 - Check Continuity of Control Switch Harness
- TB9 - Check Harness Circuit(s) For Shorts to Power
- TC - Transmission Solenoids
- TC - Testing Notes
- TC - Testing Schematic
- TC1 - Enter Output State Diagnostic Test Mode
- TC2 - Check Solenoid Electrical Operation
- TC3 - Check Continuity of Solenoid Signal and VPWR Harness
- TC4 - Check Solenoid Harness For Shorts to Power or Ground
- TC10 - Check VPWR to Solenoid
- TC11 - Check Continuity of Solenoid Signal and VPWR Harness
- TC12 - Check Harness For Short to Power or Ground
- TC20 - Check Solenoid Resistance
- TC21 - Check Shift Solenoid Circuit For Short to Power
- TC22 - Check Shift Solenoid Circuit For Short to Ground
- TC23 - Check Shift Solenoid Circuit Continuity
- TC24 - Check Shift Solenoid For Short to Power In Transmission
- TC25 - Inspect Transmission Wiring
- TC30 - Visually Check Shift Solenoid Harness
- TC31 - Check Harness and Connectors For Opens or Shorts
- TC32 - Check Harness For Intermittent Shorts to Ground
- TD - Manual Lever Position (MLP) Sensor
- TD - Manual Lever Position Sensor Resistance Spec. Table
- TD - Testing Notes
- TD - Testing Schematic
- TD1 - Key On Engine Off Service Code 67/634, 522 and 654
- TD2 - Check Continuity of MLP Sensor Harness Circuits
- TD3 - Check MLP Sensor Circuit For Short to Power and Ground
- TD4 - Check MLP Sensor Resistance
- TD9 - Transmission In 3RD Gear Only When In "D" and "OD"
- TD10 - Service Code 634: Check Symptom
- TD11 - Check For IGN Start/Run Circuit Voltage At Transmission
- TD12 - Check Function of the Transmission Range Switches
- TD13 - Check Transmission Switch Input Voltages At Breakout Box
- TD14 - Check Adjustment/External Wiring of the Manual Lever
- TD20 - Visually Check Harness Between EEC-IV and Transmission
- TD21 - Check Harness and Connectors For Intermittent Problems
- TD22 - Road Test
- TE - Transmission Fluid Temperature (TFT) Sensor
- TE - Sensor Data
- TE - Testing Notes
- TE - Testing Schematic
- TE1 - Sensor Output Outside Test Range
- TE2 - Check For VREF At Throttle Position Sensor
- TE3 - Check TFT Sensor Resistance Change As Fluid Temp Varies
- TE10 - Attempt To Generate DTC 66 or 638
- TE11 - Check Continuity of TFT and SIG RTN Circuits
- TE12 - Check TFT Circuit For Short to VPWR
- TE20 - Attempt To Generate DTC 56 or 637
- TE21 - Check VREF At the Throttle Position Sensor
- TE22 - Check TFT Circuit For Short to Ground
- TE25 - Check Transmission Wiring
- TE100 - Rerun KOEO Self Test
- TF - Turbine Shaft Speed Sensor/Output Shaft Speed Sensor
- Testing Notes
- Testing Schematic
- TF1 - Check TSS/OSS Connector Continuity
- TF2 - Check TSS/OSS Harness Circuit For Short to Power/Ground
- TF3 - Check TSS or OSS Resistance
- TF10 - Check TSS Resistance
- TF11 - Check TSS Circuits For Short to Power
- TF12 - Check TSS Circuit For Short to Ground or Each Other
- TF13 - Check TSS Circuit Continuity
- TF14 - Check PCM For Internal Shorts
- TF15 - Check TSS Output
- TF90 - Complete Transmission Drive Cycle
- TF91 - Check TSS/OSS Circuit Continuity
- TF92 - Check TSS/OSS Circuit For Short to Power or Ground
- TF93 - Check TSS/OSS Resistance
- TF95 - Check TSS Wiring
- TF96 - Check PCM and Harness Connectors
- TF97 - Road Test
- TG - Electronic Transmission - Continuous Memory Service Codes
- TG - Testing Notes
- TG - Testing Schematic
- TG90 - Perform Drive Cycle Test
- TG91 - Check For Intermittent Fault In Harness and Connectors
- TG92 - Enter Key On Engine Off Continuous Monitor Mode
- TG93 - Check for DTC 659
- TG94 - Check For DTC 675
- TG95 - Check For DTC 675 With DTC 667
- TG96 - Check For DTC 675 Generated With DTC 668
- TG97 - Check Sensor Alignment
- TG98 - Check For DTC 667
- TG99 - Check Continuity of Sensor Harness SIG Circuit
- TG100 - Check For Short to Ground In Sensor Harness SIG Circuit
- TG101 - Check Continuity of Sensor Harness SIG RTN Circuit
- TG102 - Check For Short to Power In Signal Circuit
- TG103 - Check Sensor Resistance
- X - Constant Control Relay Module (CCRM)
- X - Testing Notes
- X1 - Check Battery Voltage
- X2 - Check Battery Ground
- X3 - Ground Fault Isolation
- X4 - PCM Ground Fault Isolation
- X5 - Check SIG RTN Circuit Continuity
- X6 - Measure Voltage and Ground to CCRM
- X7 - Check Key Power to CCRM
- X8 - Check VPWR Circuit Continuity
- X9 - Measure Continuity of Power Ground to CCRM
- X10 - Check For VPWR to Pusher Fan Control Relay
- X11 - Check Pusher Fan Control Relay
- X12 - Check PFC Circuit For Short To Power
- X13 - Check PFC Circuit For Short to Ground
- X14 - Check PFC Circuit Continuity
- X15 - Code 563: Check High Fan Control (HFC) Circuit In CCRM
- X16 - Check VPWR Circuit to CCRM
- X17 - Check HFC Circuit Continuity
- X18 - Check HFC Circuit For Short to Power
- X19 - Check HFC Circuit For Shorts To Ground
- X20 - Does Fan Run With Key On
- X21 - Check VPWR Circuit To CCRM
- X22 - Check FC/LFC Circuit For Short to Ground
- X23 - Check Fan Running Mode
- X24 - Check FC/LFC Circuit Continuity
- X25 - Check FC/LFC Circuit For Short to Power
- X26 - FC/LFC Circuit Fault Isolation Check
- X28 - Cooling Fan Always On: Check If Pusher Fan Is Always On
- X29 - Check Pusher Fan Control Relay
- X30 - Cooling Fan Always On: Disconnect CCRM and Check Fan
- X31 - Check Low Speed Power to Fan Circuit For Short to Power
- X32 - Check Dual Function A/C Pressure Switch
- X33 - Check PCM
- X34 - Check ACPSW Circuit For Short to Ground
- X35 - No Engine Cooling Fan: Check Power Supply to CCRM
- X36 - Check Fan Motor Operation
- X37 - Check Fan Motor Operation
- X38 - Measure Battery Voltage Supply at Fan - Bypassing CCRM
- X39 - Verify Cooling Fan Ground
- X40 - Measure Battery Voltage Supply at Fan -- Bypassing CCRM
- X41 - Check Fan Running Mode (Low)
- X42 - Jumper High Fan Control (HFC) Signal to Ground
- X43 - Check Continuity of High Speed Power to Fan Circuit
- X44 - Check ECT Sensor
- X45 - No Engine Cooling Fan (Any Speed):Does Pusher Fan Operate
- X46 - Check B+ to Pusher Fan Control Relay
- X47 - Check Pusher Fan Ground Circuit
- X48 - Check Power to Pusher Fan Circuit Continuity
- X49 - Check Operation of PFC Relay
- X50 - Check For Continuity From CCRM to A/C Clutch
- X51 - Check For A/C Demand Switch Voltage to CCRM
- X52 - Check Voltage to A/C Pressure Switch
- X53 - Check Continuity of ACPSW to CCRM
- X54 - Check Voltage to Cyclic Pressure Switch
- X55 - Check Continuity:Cyclic Pressure Switch & CCRM or ACPSW
- X57 - Check for A/C Demand Switch Voltage to PCM
- X58 - Check WAC Circuit For Shorts to Ground
- X60 - No A/C Cutoff: Check WAC Circuit Continuity
- X61 - Check WAC Circuit For Shorts to Power
- X62 - Isolate Fault to PCM or CCRM
- X63 - Check ECT and TP Inputs
- X65 - Check Dual Function A/C Pressure Switch Input
- X66 - Check Ground Circuit to ACPSW
- X67 - Check ACPSW Circuit Continuity to PCM
- X69 - Check High Speed Fan Operation, Bypassing CCRM
- X70 - Code 556 or 557: Check Fuel Pump Relay Coil Resistance
- X71 - Check Voltage to Fuel Pump Relay
- X72 - Check VPWR Circuit To CCRM
- X73 - Check Continuity of Fuel Pump Circuit
- X74 - Check Fuel Pump Circuit For Short to Power
- X75 - Check Fuel Pump Circuit For Short to Ground
- X80 - Code 542: Does Engine Start
- X81 - Verify Fuel Pump Is Off
- X82 - Check For Low Speed Fuel Pump Relay Always Closed
- X83 - Check For Fuel Pump Relay Always Closed
- X84 - Check FPM Circuit Continuity
- X85 - Check Inertia Fuel Shutoff Switch
- X86 - Check Front/Left HO2S For Short to Power
- X87 - Check HO2S Circuit For Short to Power
- X88 - Check B+ to Low Speed Fuel Pump Relay
- X89 - Check Power to Pump Circuit Continuity
- X90 - Does Engine Start
- X91 - Check B+ Supply to Fuel Pump Relay(s)
- X92 - Check Power to Pump Circuit Continuity
- X93 - Check B+ Supply to High Speed Fuel Pump Relay
- X94 - Check Power Pump Continuity Between CCRM and IFS Switch
- X95 - Check PCM Ability to Monitor FPM
- X105 - Continuous Code 542: Check EEC-IV Harness
- X106 - Check FPM Circuit
- X107 - Check For Shorts to Power
- X110 - Check for DTC 556/557
- X111 - Check EEC-IV Harness
- X115 - Continuous Code 556/557: Check EEC-IV Harness
- X116 - Check Left Front HO2S Circuit For Short to Power
- X120 - Road Test
- X130 - Check For Causes of Fast A/C Compressor Cycling
- X131 - Check For Intermittent Open Between EATC Module and PCM
- X140 - Harness Continuity of High Speed Power to Fan Circuits
- X141 - Verify Operation of Both HFC Relays In CCRM
- X150 - Check HFC Circuit For Short to Ground
- X165 - Check For VPWR to Low Speed Fuel Pump Relay
- X166 - Check LFP Relay
- X167 - Check LFP Circuit For Short to Power
- X168 - Check LFP Circuit For Short to Ground
- X169 - Check LFP Circuit Continuity
- AA - No Start Test
- Scan Tool Testing and Procedures
Locations- Service and Repair
Diagrams- Specifications
- Technical Service Bulletins
Tools and Equipment- Analog Voltmeter
- Automatic Readout Tester
- Breakout Box
- Digital Volt-Ohmmeter
- EEC-IV Monitor Box
- EEC-IV Monitor Recorder
- EFI Pressure Gauge
- Integrated Controller Module Tester
- Jumper Wire
- Self Test Automatic Readout (Star) Tester
- Spark Tester
- Star Tester II
- Tachometer
- Test-Lights
- Timing Light
- Vacuum Gauge/Economy Meter
- Vacuum Pump
- Emission Control Systems
- Air Injection
- Air Injection Vacuum Control Solenoid Valve
- Air Diverter Valve
- Air Injection Check Valve
- Air Injection Filter
- Air Injection Hose/Tube
- Air Injection Muffler
- Air Injection Pump
- Air Injection Vacuum Reservoir
- Vacuum Check Valve
- Description and Operation
- Testing and Inspection
- Flow of Diagnosis
- Component Tests and General Diagnostics
- Diagnosis By Symptom
- Secondary Air Injection Functional Diagnosis
- AIR1 - Visual Inspection of Silencer/Filter
- AIR2 - Check For Obstructions
- AIR3 - Check Belt Tension
- AIR4 - Check Air Pump Operation
- AIR5 - Check Silencer/Filter For Obstruction
- AIR6 - Check Air Pump Resonator
- AIR24 - Visually Inspect Check Valve System (Externally)
- AIR25 - Visually Inspect Hoses at Valves (Internally)
- AIR26 - Inspect Check Valve Function
- AIR27 - Check Air Solenoid
- AIR29 - Check Vacuum Vacuum Supply to Reservoir
- AIR30 - Check Vacuum From Reservoir
- AIR32 - Check Vacuum Reservoir Ability to Hold Vacuum
- AIR32A - Check Vacuum Reservoir Function
- AIR33 - Check Air Flow at Check Valve
- AIR34 - Verify Check Valve's Ability to Hold Vacuum
- Secondary Air Injection System Noise Test
- Testing Notes
Adjustments- Locations
- Diagrams
- Specifications
- Technical Service Bulletins
- Catalytic Converter
- Evaporative Emissions System
- Exhaust Gas Recirculation
- Fillpipe Restrictor
- Positive Crankcase Ventilation
- Sensors and Switches - Emission Control Systems
- Service Precautions
- Application and ID
- Description and Operation
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Breakout Box
- Digital Volt-Ohmmeter
- EEC-IV Monitor Box
- EEC-IV Monitor Recorder
- EFI Pressure Gauge
- Integrated Controller Module Tester
- Jumper Wire
- New Generation Star (NGS) Tester
- Service Bay Diagnostic System (SBDS)
- Spark Tester
- Star Tester II
- Tachometer
- Test-Lights
- Timing Light
- Vacuum Gauge/Economy Meter
- Vacuum Pump
- Air Injection
- Fuel Delivery and Air Induction
- Fuel Pressure
- Fuel Pressure Release
- Idle Speed
- Air/Fuel Mixture
- Accelerator Pedal
- Air Cleaner Housing
- Air Flow Meter/Sensor
- Diagnostic Connector - Fuel Pump
- Fillpipe Restrictor
- Fuel
- Fuel Filler Cap
- Fuel Filter
- Fuel Injector
- Fuel Line Coupler
- Fuel Pressure Check Valve
- Fuel Pressure Regulator
- Fuel Pressure Test Port
- Fuel Pump
- Fuel Rail
- Fuel Return Line
- Fuel Supply Line
- Fuel Tank
- Fuel Tank Unit
- Idle Speed/Throttle Actuator - Electronic
- Inertia Fuel Shutoff Switch
- Main Relay (Computer/Fuel System)
- Relays and Modules - Fuel Delivery and Air Induction
- Sensors and Switches - Fuel Delivery and Air Induction
- Throttle Body
- Throttle Cable/Linkage
- Throttle Position Sensor
- Service Precautions
- Description and Operation
- Testing and Inspection
- Flow of Diagnosis
- Symptom Related Diagnostic Procedures
- Pinpoint Tests
- AIS - Air Induction Diagnosis
- Fuel Delivery Diagnosis
- FDS1 - System Integrity Check
- FDS2 - Fuel Pressure Test
- FDS3 - Check Fuel Pressure Leakdown
- FDS4 - Check Pressure Regulator Diaphragm Condition
- FDS5 - Check Fuel Pressure With Engine Load
- FDS6 - Check Fuel Pressure Regulator
- FDS7 - Check Vacuum Supply
- FDS8 - Check Fuel Filter
- FDS9 - Fuel Pump Voltage Check
- FDS10 - Check Regulator For Low Pressure Causes
- FDS11 - Check Regulator For High Pressure Causes
- FDS12 - Check Fuel Return System
- FDS13 - Check Fuel Injector Flow and Leakage
- FDS14 - Check Fuel Injector Flow and Leakage
- Service and Repair
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Ignition System
- Firing Order
- Ignition Timing
- Camshaft Position Sensor
- Distributor
- Hall Effect Sensor
- Ignition Cable
- Ignition Coil
- Ignition Control Module
- Ignition Timing Connector
- Knock Sensor
- Relays and Modules - Ignition System
- Sensors and Switches - Ignition System
- Spark Plug
- Service Precautions
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Transmission Control Systems
- Actuators and Solenoids - Transmission and Drivetrain
- Lamps and Indicators - Transmission and Drivetrain
- Relays and Modules - Transmission and Drivetrain
- Sensors and Switches - Transmission and Drivetrain
- Description and Operation
- Testing and Inspection
- Flow of Diagnosis
- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Diagnostic Trouble Code Tests and Associated Procedures
- Pinpoint Tests
- Scan Tool Testing and Procedures
- Monitors, Trips, Drive Cycles and Readiness Codes
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Application and ID
- Description and Operation
- Diagrams
- Specifications
- Technical Service Bulletins
- Tools and Equipment
- Transmission and Drivetrain
- Actuators and Solenoids - Transmission and Drivetrain
- Automatic Transmission/Transaxle
- Actuators and Solenoids - A/T
- Accumulator
- Band
- Band Apply Servo
- Brake Switch - TCC
- Clutch
- Control Module
- Extension Housing
- Fluid - A/T
- Fluid Line/Hose
- Fluid Pan
- Fluid Pump
- Governor
- Input Shaft
- Lamps and Indicators - A/T
- Malfunction Indicator Lamp - A/T
- Output Shaft
- Output Shaft Bearing/Bushing
- Parking Pawl
- Planetary Gears
- Pressure Regulating Solenoid
- Relays and Modules - A/T
- Seals and Gaskets
- Sensors and Switches - A/T
- Shift Interlock
- Shift Solenoid
- Shifter A/T
- Shift Linkage
- Shift Modulator
- Sun Gear
- Throttle Position Sensor/Switch
- Throttle Valve Assembly
- Throttle Valve Cable/Linkage
- Torque Converter
- Torque Converter Check Valve
- Torque Converter Clutch Solenoid
- Transmission Cooler
- Transmission Mode Switch
- Transmission Position Sensor/Switch
- Transmission Temperature Sensor/Switch
- Vacuum Diaphragm
- Vacuum Regulator Valve
- Valve Body
- Application and ID
- Description and Operation
- Testing and Inspection
- Symptom Related Diagnostic Procedures
- C6
- E4OD
- 4R70W
- Diagnostic Routines
- Clunk or Squawk In 1-2 or 2-3
- Engine Overspeeds on 2-3 Shift
- Erratic Shifts
- Forward Engagement Slips, Shudders, and/or Chatters
- Harsh and/or Delayed 2-3 Upshift
- Harsh and/or Delayed 3-4 Upshift
- Harsh Coasting Downshift Clunk
- Harsh Engagement W/Warm Engine
- Harsh, Delayed, or No Upshifts
- High Shift Effort
- Improper Shift Points
- Initial Drive In 2nd or 3rd
- Initial Engagement Clunk W/Engine Warm
- Mushy and/or Early Upshifts or Upshift Pileup
- Mushy, Early, Soft, and/or Slipping 1-2 Upshift
- No Drive, Slips, or Chatters In 1st Gear, In D, or Overdrive
- No Drive, Slips, or Chatters In 2nd Gear
- No Engine Braking In Manual 2nd
- No Forced Downshifts
- No or Delayed Forward Engagement
- No or Delayed Reverse Engagement
- No or Delayed Reverse Engagement and/or No Eng. Braking In Low
- No 1-2 Upshifts
- No 2-3 Upshifts
- No 3-4 Upshifts
- Poor Vehicle Acceleration
- Reverse Shudders, Chatters, and/or Slips
- Rough Initial Engagement
- Rough or Mushy 4-2 or 3-1 Shift
- Rough Shudder 3-1 Shift at Closed Throttle In Overdrive
- Rough, Harsh, and/or Delayed 1-2 Upshift
- Shift Hunting 3-4 or 4-3
- Shifts 1-3 In Overdrive
- Slipping Shift Followed By Sudden Engagement
- Slipping 4TH Gear
- Slow Initial Engagement
- Soft, Early, and/or Mushy 2-3 Upshift
- Transmission Noisy, Except Valve Resonance
- Transmission Noisy, Valve Resonance
- Other Concerns
- Diagnostic Routines
- Component Tests and General Diagnostics
- Symptom Related Diagnostic Procedures
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Clutch
- Differential Assembly
- Differential Carrier
- Differential Case
- Differential Clutch
- Differential Cover
- Differential Axle Housing
- Fluid - Differential
- Pinion Bearing
- Pinion Gear
- Ring Gear
- Application and ID
- Description and Operation
- Testing and Inspection
- Service and Repair
- Specifications
- Technical Service Bulletins
- Drive Axles, Bearings and Joints
- Drive/Propeller Shafts, Bearings and Joints
- Flex Plate
- Flywheel
- Lamps and Indicators - Transmission and Drivetrain
- Manual Transmission/Transaxle
- Relays and Modules - Transmission and Drivetrain
- Sensors and Switches - Transmission and Drivetrain
- Transfer Case
- Actuators and Solenoids - Transfer Case
- Control Module
- Fluid - Transfer Case
- Relays and Modules - Transfer Case
- Seals and Gaskets
- Transfer Case Actuator
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Symptom Related Diagnostic Procedures
- At Start Up, the Vehicle Shifts on Its Own
- Electronic Transfer Case Diagnosis
- Indicator Lamps Check
- Indicator Lights Do Not Register Correct Information
- No Range Shift
- Nothing Happens (Dead System)
- Shift From 2H to 4H Results In Noises But Shift Occurs
- Shift Switch Check
- Shifting on the Fly Not Smooth, Requires Stopping to Shift
- Symptom Chart
- Symptom Diagnosis
- Pinpoint Tests
- Component Tests and General Diagnostics
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Transmission Control Systems
- Actuators and Solenoids - Transmission and Drivetrain
- Lamps and Indicators - Transmission and Drivetrain
- Relays and Modules - Transmission and Drivetrain
- Sensors and Switches - Transmission and Drivetrain
- Description and Operation
- Testing and Inspection
- Flow of Diagnosis
- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Diagnostic Trouble Code Tests and Associated Procedures
- Pinpoint Tests
- Scan Tool Testing and Procedures
- Monitors, Trips, Drive Cycles and Readiness Codes
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Technical Service Bulletins
- Tools and Equipment
- Brakes and Traction Control
- Antilock Brakes / Traction Control Systems
- ABS Light
- ABS Main Relay
- Acceleration/Deceleration Sensor
- Brake Fluid Pump
- Brake Fluid Pump Relay
- Braking Sensor/Switch
- Diagnostic Connector - ABS
- Electronic Brake Control Module
- Hydraulic Control Assembly - Antilock Brakes
- Wheel Speed Sensor
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Diagnostic Trouble Code Descriptions
- Diagnostic Trouble Code Tests and Associated Procedures
- Symptom Related Diagnostic Procedures
- Symptom Testing Description
- Symptom to Test Chart
- Symptom Diagnosis Procedures
- Pinpoint Tests
- How to Use Pinpoint Tests
- Using the Breakout Box For Circuit Checks
- A DTC 17 Reference Voltage/Intermittent Valve Fault
- A DTC 17
- A1 Were Valve Fault DTCs Also Present
- A2 Check For Fault Repeatability
- A3 Check For Battery Voltage at ABS HCU
- A4 Measure Valve Resistance at Antilock HCU
- A5 Determine Voltage Fault Type
- A6 Check Voltage at Antilock HCU Connector
- A7 Check For Short Between B+ and Ground Internal Valve Block
- A8 Check Main Relay Operation
- A9 Measure Resistance at Antilock Hydraulic Control Unit
- A10 Test For Intermittent Internal Valve Block Short
- A11 Intermittent Loss of Battery Voltage at ABS HCU Connector
- A12 Conclude Intermittent Diagnosis
- A13 Verify Concern Is Resolved
- B DTC 22 Front Left Inlet Solenoid Valve Concern Diagnosis
- C DTC 23 Front Left Outlet Solenoid Concern Diagnosis
- D DTC 24 Front Right Inlet Solenoid Valve Concern
- E DTC 25 Front Right Outlet Valve
- F DTC 26 Rear Axle Inlet Solenoid Valve Concern Diagnosis
- G DTC 27 Rear Axle Outlet Solenoid Concern Diagnosis
- H DTC 31 Front Left Wheel Speed Sensor Diagnosis
- Diagnostic Notes
- H1 DTC 31 Check Left Front Brake ABS Sensor Electrical Fault
- H2 Check Resistance at Left Front Brake Antilock Sensor
- H3 Check Circuit 521 (T/O) Continuity
- H4 Check Circuit 522 (T/BK) Continuity
- H5 Check Circuit 521 (T/O) Short to Ground
- H6 Check Circuit 522 (T/BK) Short to Ground
- H7 Check For Short to CAN
- H8 Check Wheel End Routing For Damage
- H9 Check For Wiring Intermittents
- H10 Check If All Steps Have Been Completed
- H11 Verify Condition Resolved
- H12 Possible Conditions Not Checked
- HH DTC 35, 41, 55 or 75 Front Left Wheel Speed Sensor
- Description
- HH1 35, 41, 55 or 75 Inspect Sensor Mounting/Tone Ring
- HH2 Check Front Left Sensor Output at ECU
- HH3 Check Front Left Sensor Output at Sensor
- HH4 Check Sensor/Tone Ring Air Gap
- HH5 Recheck Front Left Sensor Output
- HH6 Resolve Inconsistent Air Gap Concern
- HH7 Check For Wiring Intermittents
- HH8 Check If All Steps Have Been Completed
- HH9 Sensor Output Drive Test
- HH10 Possible Conditions Not Checked
- J DTC 32 Front Right Wheel Speed Sensor Diagnosis
- Diagnostic Notes
- J1 DTC 32 Check RT Ft Brake Antilock Sensor Electrical Fault
- J2 Check Resistance at Front Right Wheel Sensor
- J3 Check Circuit 514 (Y/R) Continuity
- J4 Check Circuit 516 (Y/BK) Continuity
- J5 Check Circuit 514 (Y/R) Short to Ground
- J6 Check Circuit 516 (Y/BK) Short to Ground
- J7 Check Coil Circuit Component Connector Resistance
- J8 Check Wheel End Routing For Damage
- J9 Check For Wiring Intermittents
- J10 Check If All Steps Have Been Completed
- J11 Verify Condition Resolved
- J12 Possible Conditions Not Checked
- JJ Front Right Wheel Speed Sensor Diagnosis (Dynamic)
- Description
- JJ1 Inspect Sensor Mounting/Tone Ring
- JJ2 Check Front Right Sensor Output at ECU
- JJ3 Check Front Right Sensor Output at Sensor
- JJ4 Check Sensor/Tone Ring Air Gap
- JJ5 Recheck Front Right Sensor Output
- JJ6 Resolve Inconsistent Air Gap Concern
- JJ7 Check For Wiring Intermittents
- JJ8 Check If All Steps Have Been Completed
- JJ9 Sensor Output Drive Test
- JJ10 Possible Conditions Not Checked
- K DTC 33 Rear Axle Speed Sensor Diagnosis
- Diagnostic Notes
- K1 Service DTC 33 Check Rear Axle Sensor Electrical Fault
- K2 Check Resistance at Rear Axle Speed Sensor
- K3 Check Circuit 518 (LG/R) Continuity
- K4 Check Circuit 519 (LG/BK) Continuity
- K5 Check Circuit 523 Short to Ground
- K6 Check Circuit 519 (LG/BK) Short to Ground
- K7 Check Rear Axle Speed Sensor Coil Circuit Resistance
- K8 Check Wheel End Routing For Damage
- K9 Check For Wiring Intermittents
- K10 Check If All Steps Have Been Completed
- K11 Verify Condition Resolved
- K12 Possible Conditions Not Checked
- KK DTC 37, 43, 57, 77 Rear Axle Wheel Speed Sensor
- L Inoperative LH Outlet Valve or Sensor Disturbance Detected
- M Inoperative Rt FT Outlet Valve or Sensor Disturbance
- N Inop. Rear Axle Outlet Valve or Sensor Disturbance
- P DTC 63 Motor Triggered But Did Not Run
- Description
- P1 Visual Inspection and Equipment Hook-Up
- P2 Voltage Check 1 and 4
- P3 Voltage Check, Pins 1 and 3
- P4 Check Pin 1 Ground
- P5 Continuity Check, Circuit 533 (T/R)
- P6 Continuity Check, Pump Motor Relay to System Relay
- P7 Continuity Check, Pump Motor Relay Circuit 534 (Y/Lg)
- P8 Continuity Check, Pump Motor Relay Circuit 539 (PK/LB)
- P9 Check Motor Speed Sensor Resistance
- P10 Check Motor Speed Sensor Wiring
- P11 Check Motor Speed Sensor Output
- P12 Check If All Steps Have Been Completed
- P13 Verify Condition Resolved
- P14 Verify Integrity of Vehicle Wiring
- Q DTC 65 Acceleration Sensor
- Q DTC 65
- Q1 Switch Check, Default Sensor Position
- Q2 Switch Check, Sensor Raised 38.0mm
- Q3 Switch Check, Sensor Raised 25.4mm
- Q4 Check Circuit 836 Between ECU and Sensor Harness
- Q5 Short to GND, Circuit 836 Between ECU and Sensor Harness
- Q6 Check Circuit 886 Between ECU and Sensor Harness
- Q7 Short to GND, Circuit 886 Between ECU and Sensor Harness
- Q8 Check Circuit 887 Between ECU and Sensor Harness
- Q9 Short to GND, Circuit 887 Between ECU and Sensor Harness
- Q10 Verify All Steps Have Been Completed
- Q11 Verify Condition Resolved
- Q12 Verify Integrity of Vehicle Wiring
- R DTC 67 Motor Running But Not Triggered
- S Hard Light No DTC
- Component Tests and General Diagnostics
- Monitors, Trips, Drive Cycles and Readiness Codes
- Drive Test Description
- DT1.1 Low Speed ABS Stop
- DT1.2 Check For Unwarranted ABS Activity
- DT1.3 Check For High Sensor Gap
- DT1.4 Check For Marginally High Sensor Gap
- DT1.5 Determine Drive Test Is Complete
- DT1.6 Determine Next Diagnostic Step Based on Brake Symptom
- DT1.7 Obtain Diagnostic Trouble Code
- DT1.8 Determine Which Sensor Signal Is Incorrect
- Locations
- Service and Repair
- Diagrams
- Specifications
- Tools and Equipment
- Brake Bleeding
- Brake Pedal Assy
- Disc Brake System
- Drum Brake System
- Hydraulic System
- Parking Brake System
- Power Brake Assist
- Relays and Modules - Brakes and Traction Control
- Sensors and Switches - Brakes and Traction Control
- Service Precautions
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Pinpoint Tests
- A - Brake System Preliminary Checks
- B - Brake Warning Indicator Always ON
- C - Hydraulic Leak Test
- D - Power Brake Function Test
- E - Dash-Mounted Vacuum Booster Test (Power Brakes)
- F - Brake Master Cylinder Diagnosis
- G - Brake Master Cylinder Diagnosis Guide, Pedal Goes Down Fast
- H - Brake Master Cylinder Diagnosis / Pedal Eases Down Slowly
- J - Brake Pedal Is Low or Feels Spongy
- K - Excessive Brake Pedal Effort
- L - Warning Lamp Staying On
- M - Front Disc Brake Vibration/Shudder
- N - Brake Master Cylinder Bypass Condition Check
- S - Adjuster Not Functioning Properly
- Component Tests and General Diagnostics
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Antilock Brakes / Traction Control Systems
- Starting and Charging
- Sensors and Switches - Starting and Charging
- Relays and Modules - Starting and Charging
- Charging System
- Starting System
- Power and Ground Distribution
- Circuit Breaker
- Diode
- Electronic Noise Suppressor
- Fuse
- Fuse Block
- Fusible Link
- Multiple Junction Connector
- Power Distribution Relay
- Relays and Modules - Power and Ground Distribution
- Relay Box
- Diagrams
- Technical Service Bulletins
- Service Precautions
- Technical Service Bulletins
- Power and Ground Distribution
- Circuit Breaker
- Diode
- Electronic Noise Suppressor
- Fuse
- Fuse Block
- Fusible Link
- Multiple Junction Connector
- Power Distribution Relay
- Relays and Modules - Power and Ground Distribution
- Relay Box
- Diagrams
- Technical Service Bulletins
- Steering and Suspension
- Heating and Air Conditioning
- Air Door
- Air Duct
- Air Register
- Blower Motor
- Blower Motor Resistor
- Blower Motor Switch
- Compressor HVAC
- Compressor Clutch Relay
- Condenser HVAC
- Control Assembly
- Coupler HVAC
- Evaporator Case
- Evaporator Core
- Expansion Block/Orifice Tube
- Heater Core
- Heater Hose
- Refrigerant
- Refrigerant Filter
- Refrigerant Oil
- Refrigerant Pressure Sensor / Switch
- Relays and Modules - HVAC
- Sensors and Switches - HVAC
- Service Port HVAC
- Vacuum Harness HVAC
- Vacuum Reservoir HVAC
- Service Precautions
- Testing and Inspection
- Service and Repair
- Diagrams
- Specifications
- Technical Service Bulletins
- Restraints and Safety Systems
- Air Bag Systems
- Air Bag(s) Arming and Disarming
- Air Bag
- Air Bag Control Module
- Clockspring Assembly / Spiral Cable
- Impact Sensor
- Safing Sensor
- Malfunction Lamp / Indicator
- Service Precautions
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Reading and Clearing Diagnostic Trouble Codes
- Diagnostic Trouble Code Tests and Associated Procedures
- Manufacturer Code Charts
- 12 : Low Voltage/Lost Battery Feed
- 13: Forward Crash Sensor or Air Bag Circuit Short/ Ground
- 21 : Right Cowl Front Sensor Not Mounted Properly
- 22 : Right Cowl Front Sensor Output Circuit Shorted to B+
- 23 : Right Cowl Front Sensor Input Feed/Return Circuit Open
- 24 : Cowl Sensor Open/Low Resistance In Front Sensors
- 32: Driver Side Air Bag Circuit High Resistance or Open
- 34 : Driver Air Bag Circuit Low Resistance/Shorted
- 41 : Center/Front Crash Sensor Circuit High Resistance/Open
- 44 : RH Frame Rail Sensor Not Mounted Properly
- 45 : Center Sensor Not Mounted Properly
- 46 : Open Splice Center Air Bag Sensor Ground Monitor
- 51 : Air Bag Diagnostic Monitor Internal Thermal Fuse Blown
- 52: Back-Up Power Supply Voltage Boost Fault
- 53 : Air Bag Diagnostic Monitor Fault
- Diagnostic Trouble Code Priority Index
- Trouble Code to Pinpoint Test Directory
- Manufacturer Code Charts
- Pinpoint Tests
- Service and Repair
- Diagrams
- Technical Service Bulletins
- Tools and Equipment
- Relays and Modules - Restraints and Safety Systems
- Seat Belt Systems
- Air Bag(s) Arming and Disarming
- Child Restraint
- Seat Belt
- Seat Belt Extension
- Seat Belt Reminder Buzzer
- Seat Belt Reminder Lamp
- Seat Belt Retractor
- Service Precautions
- Description and Operation
- Testing and Inspection
- Adjustments
- Service and Repair
- Cleaning and Inspection
- Maintenance and Inspection
- Post Collision Safety Belt Inspection
- Removal and Installation Procedures
- Safety Belt Tongue Rotated on Belt
- Safety Belt Twisted at Safety Belt Guide
- Safety Belt With Anchor Plate Thread Damage
- Safety Belt Without Anchor Plate Thread Damage
- Slow or Lazy Retraction at Safety Belt Guide
- Diagrams
- Tools and Equipment
- Sensors and Switches - Restraints and Safety Systems
- Air Bag Systems
- Accessories and Optional Equipment
- Antitheft and Alarm Systems
- Radio, Stereo, and Compact Disc
- Relays and Modules - Accessories and Optional Equipment
- Sensors and Switches - Accessories and Optional Equipment
- Towing / Trailer System
- Trailer Connector
- Service Precautions
- Technical Service Bulletins
- Body and Frame
- Air Bag(s) Arming and Disarming
- Auxiliary Step / Running Board
- Bumper
- Cowl
- Doors, Hood and Trunk
- Exterior Moulding / Trim
- Frame
- Interior Moulding / Trim
- Locks
- Mirrors
- Paint, Striping and Decals
- Relays and Modules - Body and Frame
- Seats
- Sensors and Switches - Body and Frame
- Unibody
- Service Precautions
- Technical Service Bulletins
- Cruise Control
- Brake Switch (Cruise Control)
- Clutch Switch
- Cruise Control Servo
- Cruise Control Servo Cable
- Cruise Control Switch
- Sensors and Switches - Cruise Control
- Vacuum Vent Valve
- Service Precautions
- Description and Operation
- Testing and Inspection
- Initial Inspection and Diagnostic Overview
- Symptom Related Diagnostic Procedures
- Pinpoint Tests
- A: Speed Control Inoperative
- B: No Power to Servo
- C: No Power on Deactivator Switch
- D: Steering Wheel "On" Switch Inoperative
- E: Speed Control Surges
- F: Coast/Tap-Down Function Inoperative
- G: Accel/Tap-Up Function Inoperative
- H: Resume Function Inoperative
- J: Speed Control Does Not Disengage When Brakes Applied
- K: Speed Control Will Not Turn Off With "Off" Switch
- Diagrams
- Technical Service Bulletins
- Instrument Panel, Gauges and Warning Indicators
- ABS Light
- Audible Warning Device
- Audible Warning Device Control Module
- Charge Lamp/Indicator
- Cigarette Lighter
- Compass
- Dashboard / Instrument Panel
- Fuel Gauge
- Fuel Gauge Sender
- Instrument Cluster / Carrier
- Malfunction Indicator Lamp
- Malfunction Indicator Lamp - A/T
- Oil Level Warning Indicator
- Oil Pressure Gauge
- Oil Pressure Warning Lamp/Indicator
- Outside Temperature Display
- Relays and Modules - Instrument Panel
- Seat Belt Reminder Buzzer
- Seat Belt Reminder Lamp
- Sensors and Switches - Instrument Panel
- Speedometer Cable
- Speedometer Head
- Speedometer Module
- Temperature Gauge
- Temperature Sensor (Gauge)
- Volt Meter Gauge
- Service Precautions
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Lighting and Horns
- Ambient Light Sensor
- Backup Lamp
- Brake Lamp
- Brake Light Switch
- Center Mounted Brake Lamp
- Courtesy Lamp
- Daytime Running Lamp
- Hazard Warning Lamps
- Headlamp
- Horn
- Map Light
- Relays and Modules - Lighting and Horns
- Sensors and Switches - Lighting and Horns
- Turn Signals
- Underhood Lamp
- Service Precautions
- Diagrams
- Technical Service Bulletins
- Windows and Glass
- Wiper and Washer Systems
- Circuit Breaker
- Relays and Modules - Wiper and Washer Systems
- Sensors and Switches - Wiper and Washer Systems
- Windshield Washer Pump
- Windshield Washer Switch
- Wiper Arm
- Wiper Control Module
- Wiper Motor
- Wiper Switch
- Service Precautions
- Description and Operation
- Testing and Inspection
- Diagrams
- Technical Service Bulletins
- Application and ID
- Testing and Inspection
- Locations
- Diagrams
- Diagram Information and Instructions
- Exploded Views
- Connector Views
- Air Bag Control Module
- Air Flow Meter/Sensor
- Air Temperature Sensor ( Ambient / Intake )
- Alarm Module, (Vehicle Antitheft)
- Alternator
- Amplifier, Sound System
- Automatic Transmission/Transaxle
- Backup Lamp Switch
- Brakes and Traction Control
- Clutch Switch
- Clutch Switch, Cruise Control
- Coolant Temperature Sensor/Switch (For Computer)
- Cruise Control Servo
- Cruise Control Switch
- Data Link Connector
- Daytime Running Lamp Control Unit
- Diagnostic Connector - Fuel Pump
- Distributor, Ignition
- Engine Control Module
- Hazard Warning Switch
- Headlamp Dimmer Switch
- Headlamp Switch
- Heated Glass Element Switch
- Idle Speed/Throttle Actuator - Electronic
- Ignition Control Module
- Ignition Lock
- Ignition Switch
- Instrument Panel, Gauges and Warning Indicators
- Keyless Entry Module
- Knock Sensor
- Main Relay (Computer/Fuel System)
- Manifold Pressure/Vacuum Sensor
- Multiple Junction Connector
- Neutral Safety Switch
- Oxygen Sensor
- Power Door Lock Switch
- Power Mirror Switch
- Power Window Switch
- Radio/Stereo
- Seat Belt Systems
- Throttle Position Sensor
- Transfer Case
- Transmission Control Systems
- Turn Signal Switch
- Vehicle Speed Sensor
- Wiper Control Module
- Wiper Motor
- Electrical Diagrams
- Power and Ground Distribution
- Air Bag Systems
- Antilock Brakes / Traction Control Systems
- Antitheft and Alarm Systems
- Charging System
- Cruise Control
- Heated Glass Element
- Heating and Air Conditioning
- Instrument Panel, Gauges and Warning Indicators
- Keyless Entry
- Lighting and Horns
- Mirrors
- Power Locks
- Powertrain Management
- Radio/Stereo
- Seat Belt Systems
- Seats
- Shift Interlock, A/T
- Starting System
- Trailer Connector
- Transfer Case
- Transmission Control Systems
- Windows
- Wiper and Washer Systems
- Mechanical Diagrams
- Fluid Diagrams
- Vacuum and Vapor Hose Diagrams
- Components
- Connectors
- Grounds
- Splices
- Specifications
- Electrical Specifications
- Mechanical Specifications
- Accelerator Pedal
- Air Bag
- Air Cleaner Housing
- Air Injection
- Air Temperature Sensor ( Ambient / Intake )
- Alternator
- Antilock Brakes / Traction Control Systems
- Automatic Transmission/Transaxle
- Brake Caliper
- Brake Pedal Assy
- Brake Rotor/Disc
- Catalytic Converter
- Child Seat Tether Attachment
- Clockspring Assembly / Spiral Cable, Air Bag
- Clutch, M/T
- Compressor Clutch
- Coolant Temperature Sensor/Switch (For Computer)
- Dashboard / Instrument Panel
- Differential Assembly
- Drive Axles, Bearings and Joints
- Drum Brake System
- EGR Tube
- EGR Valve
- EGR Valve Position Sensor
- Engine
- Engine Control Module
- Firing Order
- Flex Plate
- Flywheel
- Fuel Filter
- Fuel Injector
- Fuel Pressure Regulator
- Fuel Rail
- Fuel Tank
- Hydraulic System, Brakes
- Idle Speed
- Idle Speed/Throttle Actuator - Electronic
- Ignition Timing
- Impact Sensor
- Knock Sensor
- Manual Transmission/Transaxle
- Oxygen Sensor
- Power Brake Assist
- Radiator Cooling Fan Temperature Sensor / Switch
- Safing Sensor, Air Bag
- Seat Belt
- Spark Plug
- Starter Motor
- Steering and Suspension
- Throttle Body
- Throttle Cable/Linkage
- Throttle Position Sensor
- Transfer Case
- Pressure, Vacuum and Temperature Specifications
- Capacity Specifications
- Fluid Type Specifications
- Technical Service Bulletins
Diagnostic Trouble Codes
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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