Wrangler 4WD V6-3.8L (2009): Powertrain Management

Also for this vehicle: Wrangler 2WD V6-3.8L (2008), Wrangler 4WD L4-150 2.5L VIN P MFI (1998), Wrangler L4-150 2.5L VIN E TBI (1990), Wrangler L4-150 2.5L VIN H TBI (1986), Wrangler L4-150 2.5L VIN P MFI (1993), Wrangler L4-2.4L VIN 1 (2006), Wrangler L4-2.5L VIN P (1999), Wrangler L6-242 4.0L VIN S MFI (1991), Wrangler L6-258 4.2L VIN C 2-bbl (1988), Wrangler L6-258 4.2L VIN M 2-bbl (1989), Wrangler L6-4.0L VIN S (2000).

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 Management37 pages
  - Relays and Modules - Computers and Control Systems33 pages
    Engine Control Module › Component Information30 pages
    Locations2 3
    Diagrams › Powertrain Control Module C1 38 Way2 3 4 5 6 7 8
    Service and Repair › Procedures2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
    Main Relay (Computer/Fuel System) › Component Information › Locations2 3
  - Relays and Modules - Fuel Delivery and Air Induction4 pages
    Fuel Pump Relay › Component Information › Description and Operation
    Main Relay (Computer/Fuel System) › Component Information › Locations2 3
- Sensors and Switches - Powertrain Management59 pages
  - Sensors and Switches - Computers and Control Systems41 pages
    Accelerator Pedal Position Sensor › Component Information › Diagrams
    Camshaft Position Sensor › Component Information5 pages
    Diagrams
    Service and Repair › Camshaft Position Sensor - Removal2 3 4
    Coolant Temperature Sensor/Switch (For Computer) › Component Information › Diagrams
    Crankshaft Position Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Crankshaft Position Sensor - Removal2
    Fuel Level Sensor › Component Information9 pages
    Locations2
    Service and Repair › Fuel Pump Module - Removal2 3 4 5 6 7
    Intake Air Temperature Sensor › Component Information4 pages
    Locations2
    Service and Repair › Removal2
    Knock Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Knock Sensor - Removal2
    Manifold Pressure/Vacuum Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Removal2
    Oxygen Sensor › Component Information7 pages
    Locations
    Diagrams › Oxygen Sensor 1/1 4 Way2 3 4
    Service and Repair › Removal2
    Transmission Position Switch/Sensor, A/T › Component Information5 pages
    Diagrams
    Description and Operation › Transmission Range Sensor - Description2
    Service and Repair › Transmission Range Sensor - Removal2
  - Sensors and Switches - Fuel Delivery and Air Induction5 pages
    Accelerator Pedal Position Sensor › Component Information › Diagrams
    Oil Pressure Switch (For Fuel Pump) › Component Information4 pages
    Description and Operation › Oil Pressure Switch - Description2
    Service and Repair › Oil Pressure Switch - Removal2
  - Sensors and Switches - Ignition System13 pages
    Camshaft Position Sensor › Component Information5 pages
    Diagrams
    Service and Repair › Camshaft Position Sensor - Removal2 3 4
    Crankshaft Position Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Crankshaft Position Sensor - Removal2
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Service and Repair › Ignition Lock Cylinder - Removal2
    Knock Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Knock Sensor - Removal2
- Tune-up and Engine Performance Checks23 pages
  - Fuel Pressure › System Information11 pages
    Specifications
    System Diagnosis › Checking the Fuel Delivery System2 3 4 5 6 7 8 9 10
  - Air Cleaner Housing › Air Filter Element › Component Information › Service and Repair › Air Cleaner - Removal2
  - Fuel Filter › Fuel Pressure Release › System Information › Service and Repair
  - Firing Order › Component Information › Specifications
  - Ignition Cable › Component Information › Specifications2
  - Spark Plug › Component Information4 pages
    Specifications › Spark Plug Specifications2
    Service and Repair › Spark Plug - Removal2
  - Compression Check › System Information › Specifications2
- Computers and Control Systems182 pages
  - Accelerator Pedal Position Sensor › Component Information › Diagrams
  - Intake Air Temperature Sensor › Component Information4 pages
    Locations2
    Service and Repair › Removal2
  - Camshaft Position Sensor › Component Information5 pages
    Diagrams
    Service and Repair › Camshaft Position Sensor - Removal2 3 4
  - Coolant Temperature Sensor/Switch (For Computer) › Component Information › Diagrams
  - Crankshaft Position Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Crankshaft Position Sensor - Removal2
  - Data Link Connector › Component Information3 pages
    Diagrams
    Description and Operation › Data Link Connector - Description2
  - Electronic Throttle Control Indicator › Component Information › Description and Operation › ETC Indicator - Description2
  - Engine Control Module › Component Information30 pages
    Locations2 3
    Diagrams › Powertrain Control Module C1 38 Way2 3 4 5 6 7 8
    Service and Repair › Procedures2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
  - Fuel Level Sensor › Component Information9 pages
    Locations2
    Service and Repair › Fuel Pump Module - Removal2 3 4 5 6 7
  - Information Bus › Component Information27 pages
    Diagrams › Diagram Information and Instructions2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
    Description and Operation › Communication - Description2 3
  - Knock Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Knock Sensor - Removal2
  - Main Relay (Computer/Fuel System) › Component Information › Locations2 3
  - Malfunction Indicator Lamp › Component Information › Description and Operation › Malfunction Indicator Lamp - Description2
  - Manifold Pressure/Vacuum Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Removal2
  - Oxygen Sensor › Component Information7 pages
    Locations
    Diagrams › Oxygen Sensor 1/1 4 Way2 3 4
    Service and Repair › Removal2
  - Relays and Modules - Computers and Control Systems33 pages
    Engine Control Module › Component Information30 pages
    Locations2 3
    Diagrams › Powertrain Control Module C1 38 Way2 3 4 5 6 7 8
    Service and Repair › Procedures2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
    Main Relay (Computer/Fuel System) › Component Information › Locations2 3
  - Sensors and Switches - Computers and Control Systems41 pages
    Accelerator Pedal Position Sensor › Component Information › Diagrams
    Camshaft Position Sensor › Component Information5 pages
    Diagrams
    Service and Repair › Camshaft Position Sensor - Removal2 3 4
    Coolant Temperature Sensor/Switch (For Computer) › Component Information › Diagrams
    Crankshaft Position Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Crankshaft Position Sensor - Removal2
    Fuel Level Sensor › Component Information9 pages
    Locations2
    Service and Repair › Fuel Pump Module - Removal2 3 4 5 6 7
    Intake Air Temperature Sensor › Component Information4 pages
    Locations2
    Service and Repair › Removal2
    Knock Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Knock Sensor - Removal2
    Manifold Pressure/Vacuum Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Removal2
    Oxygen Sensor › Component Information7 pages
    Locations
    Diagrams › Oxygen Sensor 1/1 4 Way2 3 4
    Service and Repair › Removal2
    Transmission Position Switch/Sensor, A/T › Component Information5 pages
    Diagrams
    Description and Operation › Transmission Range Sensor - Description2
    Service and Repair › Transmission Range Sensor - Removal2
  - Transmission Position Switch/Sensor, A/T › Component Information5 pages
    Diagrams
    Description and Operation › Transmission Range Sensor - Description2
    Service and Repair › Transmission Range Sensor - Removal2
- Emission Control Systems51 pages
  - Catalytic Converter › Component Information › Service and Repair › Catalytic Converter - Removal2
  - Evaporative Emissions System35 pages
    Canister Purge Solenoid › Component Information4 pages
    Locations2
    Service and Repair › Removal2
    Evaporative Check Valve › Component Information › Technical Service Bulletins6 pages
    All Technical Service Bulletins for Evaporative Check Valve: › 14-001-09A › Sep › 09 › Fuel System - Difficult Fuel Fill/Nozzle Shuts Off2 3
    Customer Interest for Evaporative Check Valve: › 14-001-09A › Sep › 09 › Fuel System - Difficult Fuel Fill/Nozzle Shuts Off2 3
    Evaporative Emission Control Canister › Component Information6 pages
    Locations2
    Service and Repair › Removal2 3 4
    Evaporative Emissions Hose › Component Information › Technical Service Bulletins11 pages
    All Technical Service Bulletins: › 14-001-09A › Sep › 09 › Fuel System - Difficult Fuel Fill/Nozzle Shuts Off2 3
    Customer Interest: › 14-001-09A › Sep › 09 › Fuel System - Difficult Fuel Fill/Nozzle Shuts Off2 3
    All Other Service Bulletins for Evaporative Emissions Hose: › 23-010-09A › Jul › 09 › Body - Wind Noise From Windshield/Soft Top Header2 3 4 5
    All Other Service Bulletins for Evaporative Emissions Hose: › 23-010-09A › Jul › 09 › Body - Wind Noise From Windshield/Soft Top Header
    Leak Detector, Evaporative System › Component Information7 pages
    Diagrams2 3 4
    Service and Repair › Removal2 3
    Refueling Vapor Recovery System › System Information › Description and Operation
  - Exhaust Gas Recirculation11 pages
    EGR Cooler › Component Information › Service and Repair › EGR Cooler - Removal2
    EGR Tube › Component Information › Service and Repair › Exhaust Gas Recirculation (EGR) Tube - Removal2 3 4
    EGR Valve › Component Information5 pages
    Diagrams
    Service and Repair › Exhaust Gas Recirculation (EGR) Valve - Removal2 3 4
  - Positive Crankcase Ventilation › Positive Crankcase Ventilation Valve › Component Information3 pages
    Locations
    Service and Repair › Positive Crankcase Ventilation (PCV) Valve - Removal2
- Fuel Delivery and Air Induction101 pages
  - Fuel Pressure › System Information11 pages
    Specifications
    System Diagnosis › Checking the Fuel Delivery System2 3 4 5 6 7 8 9 10
  - Fuel Pressure Release › System Information › Service and Repair
  - Accelerator Pedal › Component Information › Service and Repair › Removal2
  - Accelerator Pedal Position Sensor › Component Information › Diagrams
  - Air Cleaner Housing › Air Filter Element › Component Information › Service and Repair › Air Cleaner - Removal2
  - Fuel › Component Information › Description and Operation2
  - Fuel Filler Cap › Component Information › Description and Operation › Description2
  - Fuel Filler Cap Warning Indicator › Component Information › Description and Operation › Gas Cap Indicator - Description2
  - Fuel Filter › Fuel Pressure Release › System Information › Service and Repair
  - Fuel Injector › Component Information10 pages
    Diagrams › Fuel Injector 1 (Intake) 2 Way2 3 4 5 6 7 8
    Service and Repair › Fuel Injector - Removal2
  - Fuel Line Coupler › Component Information › Description and Operation2 3 4 5 6 7
  - Fuel Pressure Regulator › Component Information › Description and Operation
  - Fuel Pump12 pages
    Fuel Pressure › System Information11 pages
    Specifications
    System Diagnosis › Checking the Fuel Delivery System2 3 4 5 6 7 8 9 10
    Fuel Pump Relay › Component Information › Description and Operation
  - Fuel Rail › Component Information › Service and Repair › Fuel Rail - Removal2 3
  - Fuel Return Line › Component Information › Description and Operation
  - Fuel Supply Line › Component Information › Description and Operation
  - Fuel Tank22 pages
    Fuel Filler Neck › Component Information › Technical Service Bulletins6 pages
    All Technical Service Bulletins for Fuel Filler Neck: › 14-001-09A › Sep › 09 › Fuel System - Difficult Fuel Fill/Nozzle Shuts Off2 3
    Customer Interest for Fuel Filler Neck: › 14-001-09A › Sep › 09 › Fuel System - Difficult Fuel Fill/Nozzle Shuts Off2 3
    Fuel Gauge Sender › Component Information10 pages
    Locations2
    Service and Repair › Fuel Pump Module - Removal2 3 4 5 6 7 8
    Fuel Tank Vent › Component Information › Technical Service Bulletins6 pages
    All Technical Service Bulletins for Fuel Tank Vent: › 14-001-09A › Sep › 09 › Fuel System - Difficult Fuel Fill/Nozzle Shuts Off2 3
    Customer Interest for Fuel Tank Vent: › 14-001-09A › Sep › 09 › Fuel System - Difficult Fuel Fill/Nozzle Shuts Off2 3
  - Main Relay (Computer/Fuel System) › Component Information › Locations2 3
  - Oil Pressure Switch (For Fuel Pump) › Component Information4 pages
    Description and Operation › Oil Pressure Switch - Description2
    Service and Repair › Oil Pressure Switch - Removal2
  - Relays and Modules - Fuel Delivery and Air Induction4 pages
    Fuel Pump Relay › Component Information › Description and Operation
    Main Relay (Computer/Fuel System) › Component Information › Locations2 3
  - Sensors and Switches - Fuel Delivery and Air Induction5 pages
    Accelerator Pedal Position Sensor › Component Information › Diagrams
    Oil Pressure Switch (For Fuel Pump) › Component Information4 pages
    Description and Operation › Oil Pressure Switch - Description2
    Service and Repair › Oil Pressure Switch - Removal2
  - Throttle Body › Component Information4 pages
    Diagrams
    Service and Repair › Throttle Body - Removal2 3
- Ignition System34 pages
  - Firing Order › Component Information › Specifications
  - Camshaft Position Sensor › Component Information5 pages
    Diagrams
    Service and Repair › Camshaft Position Sensor - Removal2 3 4
  - Crankshaft Position Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Crankshaft Position Sensor - Removal2
  - Ignition Cable › Component Information › Specifications2
  - Ignition Coil › Component Information3 pages
    Diagrams
    Service and Repair › Ignition Coil - Removal2
  - Knock Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Knock Sensor - Removal2
  - Sensors and Switches - Ignition System13 pages
    Camshaft Position Sensor › Component Information5 pages
    Diagrams
    Service and Repair › Camshaft Position Sensor - Removal2 3 4
    Crankshaft Position Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Crankshaft Position Sensor - Removal2
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Service and Repair › Ignition Lock Cylinder - Removal2
    Knock Sensor › Component Information3 pages
    Diagrams
    Service and Repair › Knock Sensor - Removal2
  - Spark Plug › Component Information4 pages
    Specifications › Spark Plug Specifications2
    Service and Repair › Spark Plug - Removal2
- Transmission Control Systems106 pages
  - Actuators and Solenoids - Transmission and Drivetrain21 pages
    Actuators and Solenoids - A/T19 pages
    Overdrive Solenoid, A/T › Component Information4 pages
    Description and Operation › Transmission Solenoid and Pressure Switch Assembly - Description2
    Service and Repair › Transmission Solenoid and Pressure Switch Assembly - Removal2
    Pressure Regulating Solenoid, A/T › Component Information9 pages
    Diagrams › Line Pressure Sensor/Variable Force Solenoid Assembly (RLE) 6 Way2
    Description and Operation › Transmission Solenoid and Pressure Switch Assembly - Description2 3 4 5
    Service and Repair › Transmission Solenoid and Pressure Switch Assembly - Removal2
    Shift Solenoid, A/T › Component Information6 pages
    Diagrams › Transmission Solenoid/Pressure Switch Assembly (RLE) (Engine) 10 Way2
    Description and Operation › Transmission Solenoid and Pressure Switch Assembly - Description2
    Service and Repair › Transmission Solenoid and Pressure Switch Assembly - Removal2
    Actuators and Solenoids - Differential › Solenoid, Differential Lock › Component Information › Diagrams › Front Locker Solenoid (4WD Off-Road) (Chassis) 2 Way2
  - Lamps and Indicators - Transmission and Drivetrain10 pages
    Lamps and Indicators - A/T4 pages
    Overdrive Indicator Lamp › Component Information › Description and Operation › Overdrive Off Indicator - Description2
    Shift Indicator › Component Information › Service and Repair › Transmission Range Indicator Lamp - Removal2
    Lamps and Indicators - Differential › Differential Lock Indicator › Component Information › Description and Operation › Front Axle Lock Indicator - Description2 3 4
    Lamps and Indicators - Transfer Case › Four Wheel Drive Indicator Lamp › Component Information › Description and Operation › 4WD Indicator - Description2
  - Relays and Modules - Transmission and Drivetrain17 pages
    Relays and Modules - A/T11 pages
    Control Module, A/T › Component Information7 pages
    Description and Operation › Transmission Control Module - Description2 3 4
    Service and Repair › TCM Quick Learn2 3
    Transmission Control System Relay, A/T › Component Information4 pages
    Locations2
    Description and Operation › Transmission Control Relay - Description2
    Relays and Modules - Differential › Actuator Relay, Differential Lock › Component Information3 pages
    Locations
    Diagrams › Front Locker Relay (4WD Off-Road) (Dash) 5 Way2
    Relays and Modules - Transfer Case › Control Module, Transfer Case › Component Information › Diagrams2 3
  - Sensors and Switches - Transmission and Drivetrain58 pages
    Sensors and Switches - A/T39 pages
    Fluid Pressure Sensor/Switch, A/T › Component Information6 pages
    Diagrams › Line Pressure Sensor/Variable Force Solenoid Assembly (RLE) 6 Way2
    Description and Operation › Transmission Solenoid and Pressure Switch Assembly - Description2
    Service and Repair › Transmission Solenoid and Pressure Switch Assembly - Removal2
    Overdrive Switch, A/T › Component Information4 pages
    Description and Operation › Overdrive Lockout Switch - Description2
    Service and Repair › Overdrive Lockout Switch - Removal2
    Transmission Position Switch/Sensor, A/T › Component Information5 pages
    Diagrams
    Description and Operation › Transmission Range Sensor - Description2
    Service and Repair › Transmission Range Sensor - Removal2
    Transmission Speed Sensor, A/T › Component Information10 pages
    Diagrams › Input Speed Sensor (Engine) 2 Way2
    Description and Operation › Input Speed Sensor - Description2 3 4
    Service and Repair › Input Speed Sensor - Removal2 3 4
    Transmission Temperature Sensor/Switch, A/T › Component Information14 pages
    Technical Service Bulletins12 pages
    All Technical Service Bulletins for Transmission Temperature Sensor/Switch: › J31 › Jun › 10 › Campaign - A/T Fluid Temperature Warning Enabling2 3 4 5 6
    Recalls for Transmission Temperature Sensor/Switch: › J31 › Jun › 10 › Campaign - A/T Fluid Temperature Warning Enabling2 3 4 5 6
    Description and Operation › Transmission Oil Temperature Sensor - Description2
    Sensors and Switches - Differential › Switch, Differential Lock › Component Information9 pages
    Diagrams › Front Locker Switch (4WD Off-Road) (Chassis) 2 Way2
    Service and Repair › Front Axle - 216FBI2 3 4 5 6 7
    Sensors and Switches - M/T › Clutch Pedal Position Sensor / Switch › Component Information4 pages
    Description and Operation › Clutch Starter Interlock Switch - Description2
    Service and Repair › Clutch Starter Interlock Switch - Removal2
    Sensors and Switches - Transfer Case6 pages
    Four Wheel Drive Selector Switch › Component Information › Diagrams
    Gear Sensor/Switch, Transfer Case › Component Information5 pages
    Description and Operation › NV241 GENII Transfer Case2 3
    Service and Repair › NV241 GENII Transfer Case2
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