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.
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HOMESERVICE MANUALSFORD1997RANGER BASE, 2D PICKUP, 2.3 A, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - 2.3L
1997 Ford Ranger Base, 2D Pickup, 2.3 A, Automatic
Engine Controls - Tests W/Codes - 2.3L
1997 Ford Ranger Base, 2D Pickup, 2.3 A, AutomaticSECTION Engine Controls - Tests W/Codes - 2.3L
- Introduction
- Self-Diagnostic System
- Quick Test
- Additional System Functions
- On Board Diagnostic-II Monitor
- OBD-II Overview & Sensor Illustration Description
- OBD-II Drive Cycle
- Catalyst Efficiency Monitor Federal Test Procedure
- Comprehensive Component Monitor
- Evaporative Emission (EVAP) Purge Flow System Monitor
- Evaporative Emission (EVAP) Vapor Management Flow System Monitor
- Evaporative Emission (EVAP) Running Loss System Monitor
- Exhaust Gas RECIRCULATION Monitor/Differential Pressure Feedback EGR
- Fuel System Monitor
- Heated Oxygen Sensor Monitor
- Misfire Detection Monitor
- Secondary Air Injection System Monitor (Electric Air Pump System)
- Secondary Air Injection System Monitor (Belt Driven Air Pump System)
- Drive Cycles
- OBD-II Monitor Display On Scan Tool
- OBD-II Drive Cycle & Diagnostic Trouble Codes
- Vehicle Preparation For OBD-II Or Monitor Repair Verification Drive Cycle
- OBD-II Drive Cycle
- Monitor Repair Verification Drive Cycles
- EGR Monitor Repair Verification Drive Cycle
- EVAP Running Loss Monitor System Repair Verification Drive Cycle
- Catalyst Monitor Repair Verification Drive Cycle
- Fuel Monitor Or Ho2S Monitor Repair Verification Drive Cycle
- Misfire Monitor Repair Verification Drive Cycle
- Secondary Air Monitor Repair Verification Drive Cycle
- Vehicle Check/Preparation
- Summary
- Diagnostic Trouble Code (DTC) Reference Charts
- Circuit Tests
- Notes
- How To Use Circuit Tests
- Circuit Test A - No Start Vehicle Will Not Start
- Circuit Test B - EEC-V Power Relay
- Circuit Test C - Reference Voltage
- Circuit Test DA - Temperature Sensor Test (IAT & ECT)
- Circuit Test Dc - Mass Airflow (MAF) Sensor
- Circuit Test DF - Vehicle Speed Circuit (VSC) Check
- Circuit Test Dg - Knock Sensor (KS)
- Circuit Test DH - Throttle Position (TP) Sensor
- Circuit Test DJ - Programmable Speedometer/Odometer Module (PSOM)
- Circuit Test DK - Misfire Detection (MD) Sensor
- Circuit Test DL - Cylinder Head Temperature (CHT) Sensor
- Circuit Test DP - Vehicle Speed Sensor (VSS)
- Circuit Test Dr - Cylinder Identification (CID) Circuit
- Circuit Test FB - Power Take Off (PTO)
- Circuit Test FD - Brake On-Off (Boo) Switch
- Circuit Test FE - Electrical Load Inputs
- Circuit Test Ff - Power Steering Pressure (PSP) Switch
- Circuit Test FG - Octane Adjust
- Circuit Test H - Fuel Control
- Circuit Test HC - Fuel Delivery System
- Circuit Test Hd - Misfire Detection Monitor
- Circuit Test He - EGR System
- Circuit Test Hf - Catalyst Efficiency Monitor & Exhaust Systems
- Circuit Test Hg - PCV System
- Circuit Test HM - Secondary Air Injection (Air) System
- Circuit Test Ht - Traction Assist (Ta) System
- Circuit Test HU - Air Intake System
- Circuit Test HW - Evaporative Emission Purge Flow System
- Circuit Test HX - Evaporative Emission (EVAP) Monitor & System
- Circuit Test JB - Ignition Misfire Under Load
- Circuit Test JD - Integrated Ignition-No Start
- Circuit Test JE - Integrated Ignition Coil Failure
- Circuit Test JF - Integrated Ignition Coil On Plug Failure
- Circuit Test KA - Fuel Pump Relay
- Circuit Test Kc - Fuel Shutoff Valve Relay
- Circuit Test KE - Idle Air Control (IAC) Valve
- Circuit Test Kl - Shift Indicator Light (SIL)
- Circuit Test Km - Wot A/C Cut-Off (WAC)
- Circuit Test MB - Output Test Mode Not Functioning
- Circuit Test NB - Malfunction Indicator Light (Mil)
- Circuit Test NC - Ignition Diagnostic Monitor (IDM)
- Circuit Test ND - Engine Rpm/Vehicle Speed Limiter
- Circuit Test QA - Unable To Activate Self-Test/SCP Communication Error Code Not Listed
- Circuit Test QB - Diagnostic Trouble Code P0603/P1605
- Circuit Test QC - Diagnostic Trouble Code P1000
- Circuit Test QD - Diagnostic Trouble Code P1260
- Circuit Test Ta - Park & Neutral Position (PNP) Switch Clutch Pedal Position (CPP) Switch
- Circuit Test Tb - Transmission Control Switch (TCS)/Transmission Control Indicator Lamp (TCIL)
- CIRCUIT TEST TG - 4x4 LOW (4x4L) RANGE
- Circuit Test Z - Intermittent
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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.