Power control module JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual

8W-31 TRANSMISSION CONTROL SYSTEM
Component Page
Auto Shut Down Relay................ 8W-31-4
Back-Up Lamp Relay................ 8W-31-15
Body Control Module................ 8W-31-14
Brake Lamp Switch............... 8W-31-14, 15
Controller Antilock Brake............. 8W-31-17
Crankshaft Position Sensor.......... 8W-31-9, 10
Data Link Connector............ 8W-31-9, 10, 16
Diagnostic Junction Port............ 8W-31-4, 15
Engine Control Module............ 8W-31-16, 17
Engine Starter Motor Relay..... 8W-31-4, 5, 6, 12
Fuel Pump Relay.................... 8W-31-4
Fuse 5........................... 8W-31-2, 3
Fuse 12......................... 8W-31-4, 15
Fuse 20.......................... 8W-31-5, 6
Fuse 21........................ 8W-31-14, 15
Fuse 28.......................... 8W-31-2, 8
Fuse 31............................ 8W-31-4
G102.......................... 8W-31-11, 13
G108.............................. 8W-31-3
G200.......................... 8W-31-14, 15
G300............................. 8W-31-15
G301............................. 8W-31-15Component Page
Generator.......................... 8W-31-2
Input Speed Sensor.................. 8W-31-13
Junction Block............. 8W-31-4, 5, 6, 14, 15
Left Rear Lamp Assembly............ 8W-31-5, 6
Line Pressure Sensor................ 8W-31-13
Output Speed Sensor.............. 8W-31-8, 13
Park/Neutral Position Switch........... 8W-31-6
Power Distribution Center......... 8W-31-2, 3, 8
Powertrain Control
Module......... 8W-31-2, 4, 5, 6, 7, 8, 9, 10, 14
Right Rear Lamp Assembly........... 8W-31-5, 6
Shifter Assembly.............. 8W-31-14, 15, 16
Throttle Position Sensor............... 8W-31-7
Transfer Case Position Sensor........ 8W-31-6, 16
Transmission Control
Module........... 8W-31-3, 4, 7, 9, 10, 11, 12,
13, 14, 16, 17, 18
Transmission Control Relay . . . 8W-31-2, 3, 8, 11, 12
Transmission Solenoid.............. 8W-31-2, 8
Transmission Solenoid Assembly........ 8W-31-18
Transmission Solenoid/TRS
Assembly.............. 8W-31-3, 5, 11, 12, 13
WJ8W-31 TRANSMISSION CONTROL SYSTEM 8W - 31 - 1

8W-33 VEHICLE SPEED CONTROL
Component Page
Brake Lamp Switch.................. 8W-33-2
Clockspring..................... 8W-33-3, 4, 5
Electronic Speed Control Servo.......... 8W-33-2
Engine Control Module.............. 8W-33-2, 4
Fuse 23............................ 8W-33-2
G108.............................. 8W-33-2
G300.............................. 8W-33-2Component Page
G301.............................. 8W-33-2
Junction Block...................... 8W-33-2
Powertrain Control Module........... 8W-33-2, 3
Shifter Assembly..................... 8W-33-3
Speed Control Switch No. 1............ 8W-33-5
Speed Control Switch No. 2............ 8W-33-5
WJ8W-33 VEHICLE SPEED CONTROL 8W - 33 - 1

8W-35 ANTILOCK BRAKES
Component Page
Brake Lamp Switch.................. 8W-35-5
Controller Antilock Brake...... 8W-35-2, 3, 4, 5, 6
Diagnostic Junction Port............. 8W-35-2, 3
Engine Control Module.............. 8W-35-4, 5
Fuse 4........................... 8W-35-2, 3
Fuse 19.......................... 8W-35-2, 3
Fuse 23............................ 8W-35-5
Fuse 25.......................... 8W-35-2, 3
G107............................ 8W-35-2, 3Component Page
Junction Block.................. 8W-35-2, 3, 5
Left Front Wheel Speed Sensor......... 8W-35-6
Left Rear Wheel Speed Sensor.......... 8W-35-6
Power Distribution Center........... 8W-35-2, 3
Powertrain Control Module............. 8W-35-4
Red Brake Warning Indicator Switch..... 8W-35-5
Right Front Wheel Speed Sensor........ 8W-35-6
Right Rear Wheel Speed Sensor......... 8W-35-6
WJ8W-35 ANTILOCK BRAKES 8W - 35 - 1

8W-39 VEHICLE THEFT SECURITY SYSTEM
Component Page
Automatic Headlamp Light
Sensor/VTSS LED.................. 8W-39-3
Body Control Module . . . 8W-39-2, 3, 4, 5, 7, 8, 9, 10
Clockspring....................... 8W-39-7, 8
Diagnostic Junction Port............... 8W-39-9
Driver Cylinder Lock Switch............ 8W-39-6
Driver Door Lock Motor/Ajar Switch...... 8W-39-6
Driver Door Module................ 8W-39-6, 11
Engine Starter Motor Relay............ 8W-39-2
Fuse 7........................ 8W-39-3, 9, 11
Fuse 8............................. 8W-39-2
Fuse 18.......................... 8W-39-7, 8
Fuse 22.......................... 8W-39-2, 9
Fuse 28............................ 8W-39-2
G106............................. 8W-39-10
G108............................ 8W-39-7, 8
G200.............................. 8W-39-9
G300............................ 8W-39-5, 6Component Page
G301....................... 8W-39-4, 5, 6, 11
Hood Ajar Switch................... 8W-39-10
Horn No. 1....................... 8W-39-7, 8
Horn No. 2....................... 8W-39-7, 8
Horn Relay....................... 8W-39-7, 8
Horn Switch...................... 8W-39-7, 8
Ignition Switch...................... 8W-39-2
Junction Block........ 8W-39-2, 3, 4, 5, 7, 8, 9, 11
Left Liftgate Ajar Switch.............. 8W-39-4
Left Rear Door Lock Motor/Ajar Switch . . . 8W-39-5
Liftgate Flip-Up Ajar Switch............ 8W-39-4
Passenger Door Lock Motor/Ajar Switch . . . 8W-39-6
Passenger Door Module............... 8W-39-6
Power Distribution Center......... 8W-39-2, 7, 8
Remote Keyless Module.............. 8W-39-11
Right Liftgate Ajar Switch............. 8W-39-4
Right Rear Door Lock Motor/Ajar Switch . . 8W-39-5
Sentry Key Immobilizer Module......... 8W-39-9
WJ8W-39 VEHICLE THEFT SECURITY SYSTEM 8W - 39 - 1

8W-40 INSTRUMENT CLUSTER
Component Page
Airbag Control Module.............. 8W-40-4, 5
Body Control Module....... 8W-40-2, 4, 5, 6, 7, 10
Combination Flasher................. 8W-40-3
Controller Antilock Brake...... 8W-40-4, 5, 6, 7, 9
Data Link Connector.............. 8W-40-2, 4, 5
Diagnostic Junction Port . . 8W-40-4, 5, 6, 7, 8, 9, 10
Engine Control Module......... 8W-40-4, 5, 9, 10
Fuse 17............................ 8W-40-2Component Page
Fuse 22.......................... 8W-40-2, 3
G200............................ 8W-40-2, 3
Instrument Cluster . . 8W-40-2, 3, 4, 5, 6, 7, 8, 9, 10
Junction Block.................... 8W-40-2, 3
Park Brake Switch................. 8W-40-6, 7
Powertrain Control Module . . 8W-40-4, 5, 6, 7, 8, 10
Transmission Control Module........... 8W-40-4
Vehicle Information Center............. 8W-40-7
WJ8W-40 INSTRUMENT CLUSTER 8W - 40 - 1

8W-41 HORN/CIGAR LIGHTER/POWER OUTLET
Component Page
Body Control Module............... 8W-41-2, 3
Cigar Lighter....................... 8W-41-4
Cigar Lighter Relay.................. 8W-41-4
Circuit Breaker...................... 8W-41-4
Clockspring....................... 8W-41-2, 3
Front Power Outlet................... 8W-41-5
Fuse 9............................. 8W-41-5
Fuse 18.......................... 8W-41-2, 3
Fuse 26............................ 8W-41-4
Fuse 27............................ 8W-41-5
Fuse 29............................ 8W-41-4
G108............................ 8W-41-2, 3Component Page
G200............................ 8W-41-4, 5
G300.............................. 8W-41-5
Horn No. 1....................... 8W-41-2, 3
Horn No. 2....................... 8W-41-2, 3
Horn Relay....................... 8W-41-2, 3
Horn Switch...................... 8W-41-2, 3
Junction Block................ 8W-41-2, 3, 4, 5
Power Connector..................... 8W-41-5
Power Distribution Center......... 8W-41-2, 3, 5
Rear Power Outlet................... 8W-41-5
Trailer Tow Circuit Breaker............ 8W-41-4
WJ8W-41 HORN/CIGAR LIGHTER/POWER OUTLET 8W - 41 - 1

8W-42 AIR CONDITIONING-HEATER
Component Page
A/C Compressor Clutch.............. 8W-42-3, 4
A/C Compressor Clutch Relay......... 8W-42-3, 4
A/C Pressure Transducer........ 8W-42-11, 12, 13
Auto Shut Down Relay.......... 8W-42-4, 11, 12
Automatic Zone Control Module . 8W-42-2, 5, 6, 7, 8
Blower Motor................... 8W-42-2, 6, 9
Blower Motor Controller............. 8W-42-2, 6
Blower Motor Resistor Block............ 8W-42-9
Body Control Module........... 8W-42-5, 6, 9, 10
Diagnostic Junction Port............... 8W-42-5
Driver Blend Door Motor/Actuator..... 8W-42-7, 8
Engine Control Module............. 8W-42-4, 13
Fuse 1......................... 8W-42-2, 6, 9
Fuse 7............................. 8W-42-6
Fuse 11......................... 8W-42-5, 10
Fuse 16...................... 8W-42-4, 11, 12
Fuse 20......................... 8W-42-2, 10
Fuse 21.......................... 8W-42-3, 4Component Page
G104.............................. 8W-42-3
G108.......................... 8W-42-11, 12
G200......................... 8W-42-2, 6, 10
Glow Plug Relay No. 1................ 8W-42-4
Hydraulic Cooling Module.......... 8W-42-11, 12
Junction Block.............. 8W-42-2, 3, 5, 6, 10
Manual Temperature Control...... 8W-42-2, 9, 10
Mode Door Motor/Actuator........... 8W-42-7, 8
Oxygen Sensor Downstream Relay . . . 8W-42-11, 12
Passenger Blend Door Motor/Actuator . . 8W-42-7, 8
Power Distribution
Center............. 8W-42-2, 3, 4, 6, 9, 11, 12
Powertrain Control Module....... 8W-42-3, 11, 12
Rear Window Defogger............. 8W-42-5, 10
Rear Window Defogger Relay........ 8W-42-5, 10
Recirculation Door Motor/Actuator..... 8W-42-7, 8
Temperature Valve Actuator........... 8W-42-10
Viscous/Cabin Heater Relay............ 8W-42-4
WJ8W-42 AIR CONDITIONING-HEATER 8W - 42 - 1

8W-47 AUDIO SYSTEM
Component Page
Antenna........................... 8W-47-2
Antenna Module..................... 8W-47-3
Body Control Module............. 8W-47-2, 3, 13
Clockspring........................ 8W-47-13
Compact Disc Changer.............. 8W-47-6, 7
Diagnostic Junction Port...... 8W-47-2, 3, 6, 7, 13
Fuse 5........................... 8W-47-2, 3
Fuse 30.......................... 8W-47-2, 3
G300............................ 8W-47-2, 3
Junction Block.................... 8W-47-2, 3Component Page
Left Front Door Speaker......... 8W-47-4, 10, 11
Left Instrument Panel Speaker....... 8W-47-4, 12
Left Rear Door Speaker.......... 8W-47-5, 10, 11
Left Remote Radio Switch............. 8W-47-13
Power Amplifier..... 8W-47-3, 6, 7, 8, 9, 10, 11, 12
Radio............. 8W-47-2, 3, 4, 5, 6, 7, 8, 9, 13
Right Front Door Speaker........ 8W-47-4, 10, 11
Right Instrument Panel Speaker..... 8W-47-4, 12
Right Rear Door Speaker......... 8W-47-5, 10, 11
Right Remote Radio Switch........... 8W-47-13
WJ8W-47 AUDIO SYSTEM 8W - 47 - 1

8W-60 POWER WINDOWS
Component Page
Body Control Module............... 8W-60-2, 3
Diagnostic Junction Port............. 8W-60-2, 3
Driver Door Module............ 8W-60-2, 3, 4, 5
Driver Front Power Window Motor..... 8W-60-2, 3
Driver Rear Power Window Motor....... 8W-60-5
Driver Rear Power Window Switch....... 8W-60-5
Fuse 12.......................... 8W-60-2, 3
G300........................ 8W-60-2, 4, 5, 6Component Page
G301........................ 8W-60-3, 4, 5, 6
Junction Block.................. 8W-60-2, 3, 4
Passenger Door Module.......... 8W-60-2, 3, 4, 6
Passenger Front Power
Window Motor................... 8W-60-2, 3
Passenger Rear Power Window Motor.... 8W-60-6
Passenger Rear Power Window Switch.... 8W-60-6
Power Distribution Center........... 8W-60-2, 3
WJ8W-60 POWER WINDOWS 8W - 60 - 1

8W-61 POWER DOOR LOCKS
Component Page
Body Control Module.... 8W-61-2, 4, 7, 8, 9, 10, 12
Diagnostic Junction Port............. 8W-61-2, 4
Driver Cylinder Lock Switch............ 8W-61-3
Driver Door Lock Motor/Ajar Switch...... 8W-61-3
Driver Door Module................ 8W-61-2, 3
Fuse 8............................ 8W-61-11
G300........................ 8W-61-3, 4, 8, 9
G301................. 8W-61-3, 4, 7, 10, 11, 12
Junction Block.......... 8W-61-2, 4, 7, 10, 11, 12
Left Liftgate Ajar Switch............. 8W-61-12
Left Rear Door Lock Motor/Ajar
Switch.................... 8W-61-5, 6, 7, 10
Liftgate Flip-Up Ajar Switch........... 8W-61-12Component Page
Liftgate Flip-Up Push Button Switch.... 8W-61-11
Liftgate Flip-Up Release Solenoid....... 8W-61-11
Liftgate Power Lock Motor........ 8W-61-5, 6, 11
Passenger Door Lock Motor/Ajar
Switch....................... 8W-61-4, 5, 6
Passenger Door
Module........... 8W-61-4, 5, 6, 7, 8, 9, 10, 11
Rear Wiper Motor................... 8W-61-12
Remote Keyless Module............... 8W-61-2
Right Liftgate Ajar Switch............ 8W-61-12
Right Rear Door Lock Motor/Ajar
Switch..................... 8W-61-5, 6, 8, 9
WJ8W-61 POWER DOOR LOCKS 8W - 61 - 1