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 MANUALSSATURN2006RELAY 3.5 L, FWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - 3.5L - INTRODUCTION (2 OF 2)
2006 Saturn Relay 3.5 L, FWD
Engine Controls - 3.5L - Introduction (2 Of 2)
2006 Saturn Relay 3.5 L, FWDSECTION Engine Controls - 3.5L - Introduction (2 Of 2)
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Engine Controls Component Views
- Powertrain Control Module Connector End Views
- Engine Controls Connector End Views
- Accelerator Pedal Position (APP) Sensor
- Camshaft Position (CMP) Sensor
- Crankshaft Position (CKP) Sensor
- Engine Coolant Temperature (ECT) Sensor
- Evaporative Emission (EVAP) Canister Purge Solenoid Valve
- Evaporative Emission (EVAP) Canister Vent Solenoid Valve
- Exhaust Gas Recirculation (EGR) Valve (Early Production)
- Exhaust Gas Recirculation (EGR) Valve (Late Production)
- Fuel Injector 1
- Fuel Injector 2
- Fuel Injector 3
- Fuel Injector 4
- Fuel Injector 5
- Fuel Injector 6
- Fuel Pump and Sender Assembly
- Fuel Tank Pressure (FTP) Sensor
- Heated Oxygen Sensor (HO2S) 1
- Heated Oxygen Sensor (HO2S) 2
- Ignition Control Module (ICM)
- Knock Sensor (KS) 1
- Knock Sensor (KS) 2
- Manifold Absolute Pressure (MAP) Sensor
- Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
- Throttle Actuator Control (TAC) Module
- Diagnostic Information and Procedures
- Repair Instructions
- Powertrain Control Module Replacement
- Crankshaft Position System Variation Learn
- Engine Coolant Temperature Sensor Replacement
- Mass Airflow Sensor Replacement
- Manifold Absolute Pressure Sensor Replacement
- Heated Oxygen Sensor 1 Replacement
- Heated Oxygen Sensor 2 Replacement
- Accelerator Pedal Position Sensor Replacement
- Throttle Body Assembly Replacement
- Fuel Pressure Relief
- Fuel Pressure Gage Installation and Removal
- Metal Collar Quick Connect Fitting Service
- Plastic Collar Quick Connect Fitting Service
- Fuel Tank Draining
- Fuel Tank Replacement (Long Wheel Base)
- Fuel Tank Replacement (Short Wheel Base)
- Fuel Tank Pressure Sensor Replacement
- Fuel Level Sensor Replacement
- Filler Tube Replacement
- Fuel Sender Assembly Replacement (Short Wheel Base)
- Fuel Sender Assembly Replacement (Long Wheel Base)
- Fuel Hose/Pipes Replacement - Engine Compartment
- Fuel Hose/Pipes Replacement - Chassis
- Fuel System Cleaning
- Fuel Injection Fuel Rail Assembly Replacement
- Fuel Injector Replacement
- Evaporative Emission Canister Purge Solenoid Valve Replacement
- Evaporative Emission Canister Vent Solenoid Valve Replacement (Short Wheel Base)
- Evaporative Emission Canister Vent Solenoid Valve Replacement (Long Wheel Base)
- Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank (Long Wheel Base)
- Evaporative Emission Hoses/Pipes Replacement - Canister/Fuel Tank (Short Wheel Base)
- Evaporative Emission Hoses/Pipes Replacement - Chassis/Canister
- Evaporative Emission Canister Replacement (Long Wheel Base)
- Evaporative Emission Canister Replacement (Short Wheel Base)
- Ignition Coil Replacement
- Ignition Control Module Replacement
- Spark Plug Wire Inspection
- Spark Plug Wire Replacement
- Spark Plug Inspection
- Spark Plug Replacement
- Crankshaft Position Sensor Replacement
- Camshaft Position Sensor Replacement
- Knock Sensor Replacement
- Exhaust Gas Recirculation Valve Replacement
- Exhaust Gas Recirculation Pipe Replacement
- Exhaust Gas Recirculation (EGR) System Cleaning
- Air Cleaner Inlet Duct Replacement
- Air Cleaner Element Replacement
- Air Cleaner Assembly Replacement
- Description and Operation
- Powertrain Control Module Description
- Notes
- PCM Function
- EEPROM
- Data Link Connector (DLC)
- Malfunction Indicator Lamp (MIL) Operation
- PCM Service Precautions
- Emissions Diagnosis For State I/M Programs
- Aftermarket (Add-On) Electrical And Vacuum Equipment
- Electrostatic Discharge (ESD) Damage
- Emissions Control Information Label
- Underhood Inspection
- Basic Knowledge Required
- Fuel System Description
- Fuel System Overview
- Fuel Tank
- Fuel Fill Pipe
- Fuel Filler Cap
- Fuel Sender Assembly
- Fuel Level Sensor
- Fuel Pump
- Fuel Strainer
- Fuel Feed Pipe
- Nylon Fuel Pipe
- Quick-Connect Fittings
- Fuel Pipe O-Rings
- Fuel Rail Assembly
- Fuel Injectors
- Fuel Pressure Regulator
- Fuel Metering Modes of Operation
- Starting Mode
- Clear Flood Mode
- Run Mode
- Acceleration Mode
- Deceleration Mode
- Battery Voltage Correction Mode
- Fuel Cutoff Mode
- Short Term Fuel Trim
- Long Term Fuel Trim
- Evaporative Emission Control System Description
- Electronic Ignition (EI) System Description
- Throttle Actuator Control (TAC) System Description
- Exhaust Gas Recirculation (EGR) System Description
- Powertrain Control Module Description
- Special Tools and Equipment
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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.