XJ (X308) V8-4.0L SC (2003): Powertrain Management

Also for this vehicle: XJ (X350) V8-4.2L (2005), XJ (X350) V8-4.2L SC (2004), XJ (X351) V8-5.0L SC (2010), XJ (X350) Factory Service Manual (2003.5-2004).

Diagnostics Maintenance Engine Transmission Brakes Electrical Steering & suspension Heating & A/C Body & interior

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01Relays and Modules Relays and Modules: Sections
02Sensors and Switches Sensors and Switches: Sections
03Maintenance Maintenance: Sections
04Engine, Cooling and Exhaust Engine, Cooling and Exhaust: Sections
05Powertrain Management Powertrain Management: Sections
- Relays and Modules - Powertrain Management51 pages
  - Relays and Modules - Computers and Control Systems26 pages
    Body Control Module › Component Information › Locations2
    Electronic Throttle Actuator Relay › Component Information › Locations2 3 4 5 6
    Engine Control Module › Component Information6 pages
    Locations
    Diagrams › Connector Views2
    Description and Operation › Engine Control Module2 3
    Main Relay (Computer/Fuel System) › Component Information › Locations › Engine Management System (EMS) Relay2 3 4 5 6 7 8 9 10 11 12
  - Relays and Modules - Fuel Delivery and Air Induction19 pages
    Fuel Pump Control Unit › Component Information › Locations
    Fuel Pump Relay › Component Information › Locations2 3 4 5 6
    Main Relay (Computer/Fuel System) › Component Information › Locations › Engine Management System (EMS) Relay2 3 4 5 6 7 8 9 10 11 12
  - Relays and Modules - Ignition System › Ignition Relay › Component Information › Locations2 3 4 5 6
- Sensors and Switches - Powertrain Management155 pages
  - Sensors and Switches - Computers and Control Systems95 pages
    Accelerator Pedal Position Sensor › Component Information › Description and Operation
    Air Flow Meter/Sensor › Component Information5 pages
    Locations
    Description and Operation › Basic2 3 4
    Camshaft Position Sensor › Component Information15 pages
    Locations2 3
    Service and Repair › Camshaft Position (CMP) Sensor LH2 3 4 5 6 7 8 9 10 11 12
    Coolant Temperature Sensor/Switch (For Computer) › Component Information9 pages
    Locations2
    Description and Operation › Engine Coolant Temperature Sensor2 3 4
    Service and Repair › Engine Coolant Temperature (ECT) Sensor - 4.2L2 3
    Crankshaft Position Sensor › Component Information › Locations2 3 4 5
    Engine Speed Sensor › Component Information › Description and Operation
    Engine Temperature Sensor › Component Information › Description and Operation
    Fuel Level Sensor › Component Information › Description and Operation2 3
    Fuel Pressure Sensor › Component Information › Description and Operation
    Fuel Tank Pressure Sensor › Component Information3 pages
    Locations
    Description and Operation › Fuel Tank Pressure Sensor Circuit2
    Intake Air Temperature Sensor › Component Information3 pages
    Locations
    Description and Operation › Intake Air Temperature Sensor2
    Intake Air Temperature Switch › Component Information › Description and Operation
    Knock Sensor › Component Information3 pages
    Description and Operation
    Service and Repair › Knock Sensor (KS) - Bank 22
    Manifold Pressure/Vacuum Sensor › Component Information9 pages
    Locations2 3
    Service and Repair › 4.2L, Vehicles With: Supercharger2 3 4 5 6
    Oil Temperature Sensor For ECM › Component Information › Locations2 3 4
    Oxygen Sensor › Component Information21 pages
    Technical Service Bulletins › Engine Controls - Removal of Seized Oxygen (O2) Sensors2
    Description and Operation › Catalyst Efficiency Monitor2 3
    Service and Repair › Upstream Oxygen Sensor RH2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
    Throttle Position Sensor › Component Information › Locations2 3
    Transmission Position Switch/Sensor, A/T › Component Information7 pages
    Description and Operation
    Service and Repair › Dual Linear Switch2 3 4 5 6
  - Sensors and Switches - Fuel Delivery and Air Induction27 pages
    Accelerator Pedal Position Sensor › Component Information › Description and Operation
    Air Flow Meter/Sensor › Component Information5 pages
    Locations
    Description and Operation › Basic2 3 4
    Fuel Pressure Sensor/Switch › Component Information7 pages
    Locations2 3
    Description and Operation › Fuel Rail Pressure Sensor2 3 4
    Fuel Temperature Sensor › Component Information › Locations2 3 4 5 6
    Inertia Fuel Shutoff Switch › Component Information › Locations2 3 4 5
    Throttle Position Sensor › Component Information › Locations2 3
  - Sensors and Switches - Ignition System33 pages
    Camshaft Position Sensor › Component Information15 pages
    Locations2 3
    Service and Repair › Camshaft Position (CMP) Sensor LH2 3 4 5 6 7 8 9 10 11 12
    Crankshaft Position Sensor › Component Information › Locations2 3 4 5
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Technical Service Bulletins10 pages
    All Technical Service Bulletins for Ignition Switch Lock Cylinder: › JTB00106 › Jun › 08 › Keyless Entry - Can't Lock Vehicle Using Remote Fob2 3 4 5
    Customer Interest for Ignition Switch Lock Cylinder: › JTB00106 › Jun › 08 › Keyless Entry - Can't Lock Vehicle Using Remote Fob2 3 4 5
    Knock Sensor › Component Information3 pages
    Description and Operation
    Service and Repair › Knock Sensor (KS) - Bank 22
- Tune-up and Engine Performance Checks24 pages
- Computers and Control Systems316 pages
  - Accelerator Pedal Position Sensor › Component Information › Description and Operation
  - Air Flow Meter/Sensor › Component Information5 pages
    Locations
    Description and Operation › Basic2 3 4
  - Intake Air Temperature Sensor › Component Information3 pages
    Locations
    Description and Operation › Intake Air Temperature Sensor2
  - Intake Air Temperature Switch › Component Information › Description and Operation
  - Body Control Module › Component Information › Locations2
  - Camshaft Position Sensor › Component Information15 pages
    Locations2 3
    Service and Repair › Camshaft Position (CMP) Sensor LH2 3 4 5 6 7 8 9 10 11 12
  - Coolant Temperature Sensor/Switch (For Computer) › Component Information9 pages
    Locations2
    Description and Operation › Engine Coolant Temperature Sensor2 3 4
    Service and Repair › Engine Coolant Temperature (ECT) Sensor - 4.2L2 3
  - Crankshaft Position Sensor › Component Information › Locations2 3 4 5
  - Electronic Throttle Actuator › Component Information › Description and Operation
  - Electronic Throttle Actuator Relay › Component Information › Locations2 3 4 5 6
  - Engine Control Module › Component Information6 pages
    Locations
    Diagrams › Connector Views2
    Description and Operation › Engine Control Module2 3
  - Engine Speed Sensor › Component Information › Description and Operation
  - Engine Temperature Sensor › Component Information › Description and Operation
  - Fuel Level Sensor › Component Information › Description and Operation2 3
  - Fuel Pressure Sensor › Component Information › Description and Operation
  - Fuel Tank Pressure Sensor › Component Information3 pages
    Locations
    Description and Operation › Fuel Tank Pressure Sensor Circuit2
  - Idle Speed/Throttle Actuator - Electronic › Component Information › Description and Operation
  - Information Bus › Component Information69 pages
    Locations2
    Diagrams › CAN and SCP Networks2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20…26
    Description and Operation › Overview2 3 4
    Testing and Inspection › Initial Inspection and Diagnostic Overview2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20…37
  - Knock Sensor › Component Information3 pages
    Description and Operation
    Service and Repair › Knock Sensor (KS) - Bank 22
  - Main Relay (Computer/Fuel System) › Component Information › Locations › Engine Management System (EMS) Relay2 3 4 5 6 7 8 9 10 11 12
  - Manifold Pressure/Vacuum Sensor › Component Information9 pages
    Locations2 3
    Service and Repair › 4.2L, Vehicles With: Supercharger2 3 4 5 6
  - Oil Temperature Sensor For ECM › Component Information › Locations2 3 4
  - Oxygen Sensor › Component Information21 pages
    Technical Service Bulletins › Engine Controls - Removal of Seized Oxygen (O2) Sensors2
    Description and Operation › Catalyst Efficiency Monitor2 3
    Service and Repair › Upstream Oxygen Sensor RH2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
  - Relays and Modules - Computers and Control Systems26 pages
    Body Control Module › Component Information › Locations2
    Electronic Throttle Actuator Relay › Component Information › Locations2 3 4 5 6
    Engine Control Module › Component Information6 pages
    Locations
    Diagrams › Connector Views2
    Description and Operation › Engine Control Module2 3
    Main Relay (Computer/Fuel System) › Component Information › Locations › Engine Management System (EMS) Relay2 3 4 5 6 7 8 9 10 11 12
  - Sensors and Switches - Computers and Control Systems95 pages
    Accelerator Pedal Position Sensor › Component Information › Description and Operation
    Air Flow Meter/Sensor › Component Information5 pages
    Locations
    Description and Operation › Basic2 3 4
    Camshaft Position Sensor › Component Information15 pages
    Locations2 3
    Service and Repair › Camshaft Position (CMP) Sensor LH2 3 4 5 6 7 8 9 10 11 12
    Coolant Temperature Sensor/Switch (For Computer) › Component Information9 pages
    Locations2
    Description and Operation › Engine Coolant Temperature Sensor2 3 4
    Service and Repair › Engine Coolant Temperature (ECT) Sensor - 4.2L2 3
    Crankshaft Position Sensor › Component Information › Locations2 3 4 5
    Engine Speed Sensor › Component Information › Description and Operation
    Engine Temperature Sensor › Component Information › Description and Operation
    Fuel Level Sensor › Component Information › Description and Operation2 3
    Fuel Pressure Sensor › Component Information › Description and Operation
    Fuel Tank Pressure Sensor › Component Information3 pages
    Locations
    Description and Operation › Fuel Tank Pressure Sensor Circuit2
    Intake Air Temperature Sensor › Component Information3 pages
    Locations
    Description and Operation › Intake Air Temperature Sensor2
    Intake Air Temperature Switch › Component Information › Description and Operation
    Knock Sensor › Component Information3 pages
    Description and Operation
    Service and Repair › Knock Sensor (KS) - Bank 22
    Manifold Pressure/Vacuum Sensor › Component Information9 pages
    Locations2 3
    Service and Repair › 4.2L, Vehicles With: Supercharger2 3 4 5 6
    Oil Temperature Sensor For ECM › Component Information › Locations2 3 4
    Oxygen Sensor › Component Information21 pages
    Technical Service Bulletins › Engine Controls - Removal of Seized Oxygen (O2) Sensors2
    Description and Operation › Catalyst Efficiency Monitor2 3
    Service and Repair › Upstream Oxygen Sensor RH2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
    Throttle Position Sensor › Component Information › Locations2 3
    Transmission Position Switch/Sensor, A/T › Component Information7 pages
    Description and Operation
    Service and Repair › Dual Linear Switch2 3 4 5 6
  - Throttle Position Sensor › Component Information › Locations2 3
  - Transmission Position Switch/Sensor, A/T › Component Information7 pages
    Description and Operation
    Service and Repair › Dual Linear Switch2 3 4 5 6
  - Variable Valve Timing Solenoid › Component Information › Locations2 3
- Emission Control Systems17 pages
  - Catalytic Converter › Catalytic Converter Mounting Gasket › Component Information › Service and Repair › Gasket - Downpipe Catalytic Converter to Manifold - Left-hand2 3 4 5 6 7 8 9 10 11
  - Early Fuel Evaporation (EFE) › EFE Valve › Component Information › Technical Service Bulletins2 pages
    All Technical Service Bulletins for EFE Valve: › 310-10 › Jul › 03 › Fuel System - Difficulty Refueling/Spit Back
    Customer Interest for EFE Valve: › 310-10 › Jul › 03 › Fuel System - Difficulty Refueling/Spit Back
  - Evaporative Emissions System › Evaporative Emission Control Canister › Canister Vent Valve › Component Information › Technical Service Bulletins2 pages
    All Technical Service Bulletins for Canister Vent Valve: › 310-10 › Jul › 03 › Fuel System - Difficulty Refueling/Spit Back
    Customer Interest for Canister Vent Valve: › 310-10 › Jul › 03 › Fuel System - Difficulty Refueling/Spit Back
  - Exhaust Gas Recirculation › System Information › Description and Operation › Exhaust Gas Recirculation System Monitor2
- Fuel Delivery and Air Induction202 pages
  - Fuel Pressure › System Information › Specifications › Pressure, Vacuum and Temperature Specifications2
  - Fuel Pressure Release › System Information › Service Precautions2 3
  - Idle Speed › System Information › Specifications › Controlled Idle Speed2
  - Accelerator Pedal › Component Information › Specifications2 3 4 5 6
  - Accelerator Pedal Position Sensor › Component Information › Description and Operation
  - Air Cleaner Housing3 pages
    Air Cleaner Fresh Air Duct/Hose › Component Information › Locations
    Air Filter Element › Component Information › Locations2
  - Air Flow Meter/Sensor › Component Information5 pages
    Locations
    Description and Operation › Basic2 3 4
  - Fuel Filler Cap › Component Information › Technical Service Bulletins6 pages
    All Technical Service Bulletins for Fuel Filler Cap: › 310-S509 › Jun › 05 › Campaign - Fuel Cap Replacement2 3
    Recalls for Fuel Filler Cap: › 310-S509 › Jun › 05 › Campaign - Fuel Cap Replacement2 3
  - Fuel Filter › Fuel Pressure Release › System Information › Service Precautions2 3
  - Fuel Injector › Fuel Injector Wiring Harness › Component Information › Locations2 3 4
  - Fuel Line Coupler › Component Information › Service and Repair › Quick Release Coupling2 3 4 5
  - Fuel Pressure Sensor/Switch › Component Information7 pages
    Locations2 3
    Description and Operation › Fuel Rail Pressure Sensor2 3 4
  - Fuel Pump9 pages
    Fuel Pressure › System Information › Specifications › Pressure, Vacuum and Temperature Specifications2
    Fuel Pump Control Unit › Component Information › Locations
    Fuel Pump Relay › Component Information › Locations2 3 4 5 6
  - Fuel Rail › Component Information › Locations2
  - Fuel Tank10 pages
    Fuel Filler Hose › Component Information › Locations2 3 4 5 6 7 8
    Fuel Gauge Sender › Component Information › Technical Service Bulletins2 pages
    All Technical Service Bulletins for Fuel Gauge Sender: › 310-10 › Jul › 03 › Fuel System - Difficulty Refueling/Spit Back
    Customer Interest for Fuel Gauge Sender: › 310-10 › Jul › 03 › Fuel System - Difficulty Refueling/Spit Back
  - Fuel Tank Unit › Component Information › Locations2 3 4 5 6 7 8 9 10 11 12 13 14
  - Fuel Temperature Sensor › Component Information › Locations2 3 4 5 6
  - Idle Speed/Throttle Actuator - Electronic › Component Information › Description and Operation
  - Inertia Fuel Shutoff Switch › Component Information › Locations2 3 4 5
  - Intake Air Duct › Component Information10 pages
    Technical Service Bulletins4 pages
    All Technical Service Bulletins for Intake Air Duct: › 303-57 › Aug › 03 › Engine - Poor Performance/Low Power2
    Customer Interest for Intake Air Duct: › 303-57 › Aug › 03 › Engine - Poor Performance/Low Power2
    Service and Repair › Throttle Intake Elbow2 3 4 5 6
  - Main Relay (Computer/Fuel System) › Component Information › Locations › Engine Management System (EMS) Relay2 3 4 5 6 7 8 9 10 11 12
  - Relays and Modules - Fuel Delivery and Air Induction19 pages
    Fuel Pump Control Unit › Component Information › Locations
    Fuel Pump Relay › Component Information › Locations2 3 4 5 6
    Main Relay (Computer/Fuel System) › Component Information › Locations › Engine Management System (EMS) Relay2 3 4 5 6 7 8 9 10 11 12
  - Sensors and Switches - Fuel Delivery and Air Induction27 pages
    Accelerator Pedal Position Sensor › Component Information › Description and Operation
    Air Flow Meter/Sensor › Component Information5 pages
    Locations
    Description and Operation › Basic2 3 4
    Fuel Pressure Sensor/Switch › Component Information7 pages
    Locations2 3
    Description and Operation › Fuel Rail Pressure Sensor2 3 4
    Fuel Temperature Sensor › Component Information › Locations2 3 4 5 6
    Inertia Fuel Shutoff Switch › Component Information › Locations2 3 4 5
    Throttle Position Sensor › Component Information › Locations2 3
  - Supercharger19 pages
    Intercooler, Supercharger › Component Information › Service and Repair › Charge Air Cooler Inlet Duct, Engine Set2 3 4 5 6 7 8 9 10 11
    Supercharger Coolant Pump › Component Information › Description and Operation2 3
    Supercharger Gasket › Component Information › Service and Repair › Supercharger Outlet Duct Gasket2 3
    Supercharger Oil › Component Information › Specifications › Capacity Specifications2
  - Throttle Body › Component Information › Locations2 3 4 5 6 7 8 9
  - Throttle Cable/Linkage › Component Information › Service and Repair2 3
  - Throttle Position Sensor › Component Information › Locations2 3
  - Variable Induction System › Variable Induction Control Valve › Component Information › Locations2 3 4 5 6
- Ignition System73 pages
  - Firing Order › Component Information › Specifications
  - Ignition Timing › Number One Cylinder › Component Information › Locations
  - Camshaft Position Sensor › Component Information15 pages
    Locations2 3
    Service and Repair › Camshaft Position (CMP) Sensor LH2 3 4 5 6 7 8 9 10 11 12
  - Crankshaft Position Sensor › Component Information › Locations2 3 4 5
  - Ignition Coil › Component Information › Description and Operation
  - Ignition Relay › Component Information › Locations2 3 4 5 6
  - Knock Sensor › Component Information3 pages
    Description and Operation
    Service and Repair › Knock Sensor (KS) - Bank 22
  - Relays and Modules - Ignition System › Ignition Relay › Component Information › Locations2 3 4 5 6
  - Sensors and Switches - Ignition System33 pages
    Camshaft Position Sensor › Component Information15 pages
    Locations2 3
    Service and Repair › Camshaft Position (CMP) Sensor LH2 3 4 5 6 7 8 9 10 11 12
    Crankshaft Position Sensor › Component Information › Locations2 3 4 5
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Technical Service Bulletins10 pages
    All Technical Service Bulletins for Ignition Switch Lock Cylinder: › JTB00106 › Jun › 08 › Keyless Entry - Can't Lock Vehicle Using Remote Fob2 3 4 5
    Customer Interest for Ignition Switch Lock Cylinder: › JTB00106 › Jun › 08 › Keyless Entry - Can't Lock Vehicle Using Remote Fob2 3 4 5
    Knock Sensor › Component Information3 pages
    Description and Operation
    Service and Repair › Knock Sensor (KS) - Bank 22
  - Spark Plug › Component Information › Specifications2
- Transmission Control Systems14 pages
  - Actuators and Solenoids - Transmission and Drivetrain › Actuators and Solenoids - A/T › Shift Interlock Solenoid › Component Information › Service and Repair2
  - Relays and Modules - Transmission and Drivetrain › Relays and Modules - A/T › Control Module, A/T › Component Information › Technical Service Bulletins2 pages
    All Technical Service Bulletins for Control Module: › 307-14 › Aug › 03 › A/T - Harsh Cold Engagement/ Poor Shift Quality
    Customer Interest for Control Module: › 307-14 › Aug › 03 › A/T - Harsh Cold Engagement/ Poor Shift Quality
  - Sensors and Switches - Transmission and Drivetrain › Sensors and Switches - A/T10 pages
    Downshift Switch, A/T › Component Information › Adjustments2 3
    Transmission Position Switch/Sensor, A/T › Component Information7 pages
    Description and Operation
    Service and Repair › Dual Linear Switch2 3 4 5 6
06Transmission and Drivetrain Transmission and Drivetrain: Sections
07Brakes and Traction Control Brakes and Traction Control: Sections
08Starting and Charging Starting and Charging: Sections
09Power and Ground Distribution Power and Ground Distribution: Sections
10Steering and Suspension Steering and Suspension: Sections
11Heating and Air Conditioning Heating and Air Conditioning: Sections
12Restraint Systems Restraint Systems: Sections
13Accessories and Optional Equipment Accessories and Optional Equipment: Sections
14Body and Frame Body and Frame: Sections
15Cruise Control Cruise Control: Sections
16Instrument Panel, Gauges and Warning Indicators Instrument Panel, Gauges and Warning Indicators: Sections
17Lighting and Horns Lighting and Horns: Sections
18Windows and Glass Windows and Glass: Sections
19Wiper and Washer Systems Wiper and Washer Systems: Sections