2003 JEEP Wrangler

Jeep Wrangler Rubicon 2003 - BUZZERS, RELAYS & TIMERS

Jeep Wrangler Rubicon 2003 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Compressor Clutch Relay	In power distribution center.
Anti-Lock Brake System Relay	In power distribution center.
Automatic Shut Down Relay	In power distribution center.
Blower Motor Relay	In wire harness connector, near right end of heater-A/C housing.
Combination Flasher	Under upper steering column shroud.
Engine Starter Motor Relay	In power distribution center.
Foglamp Relay	In power distribution center.
Fuel Pump Relay	In power distribution center.
Horn Relay	In power distribution center.
Oxygen Sensor Downstream Heater Relay	In power distribution center.
Radiator Fan Relay	On engine side of power distribution center.
Rear Window Defogger Relay	In power distribution center.

Jeep Wrangler Rubicon 2003 - CIRCUIT PROTECTION DEVICES

Jeep Wrangler Rubicon 2003 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Circuit Breaker	In rear of engine compartment, near firewall.
Fuse Block	Under right center of dash.
Power Distribution Center	On right side of engine compartment, on inner fender panel. See Fig. 4.

Jeep Wrangler Rubicon 2003 - CONTROL UNITS

Jeep Wrangler Rubicon 2003 CONTROL UNITS LOCATION

Component	Location
Air Bag Control Module	Front of floorpan tunnel.
Controller Anti-Lock Brake	At left rear corner of engine compartment. See Fig. 4.
Daytime Running Lamp (DRL) Module	In rear of engine compartment, on firewall. See Fig. 3.
Fuel Pump Module	On fuel tank.
Powertrain Control Module	In right rear of engine compartment, on firewall. See Fig. 4.
Sentry Key Immobilizer Module	On steering column, near ignition lock cylinder.
Transmission Control Module	On left fender shield.

Jeep Wrangler Rubicon 2003 - MOTORS

Jeep Wrangler Rubicon 2003 MOTORS LOCATION

Component	Location
Blend Door Actuator	On heater-A/C housing.
Blower Motor	On right rear of engine compartment. See Fig. 4.
Front Washer Pump	Under washer fluid reservoir. See Fig. 5.
Front Wiper Motor	Left center of firewall.
Fuel Pump Module	On fuel tank.
Idle Air Control Motor (2.4L)	At top of engine. See Fig. 1.
Idle Air Control Motor (4.0L)	On side of throttle body assembly. See Fig. 2.
Leak Detection Pump	At right rear quarterpanel, forward of taillamp assembly.
Radiator Fan Motor	On right radiator fan shroud.
Rear Washer Pump	Under washer fluid reservoir. See Fig. 5.
Rear Wiper Motor	Inside of liftglass.

Jeep Wrangler Rubicon 2003 - SENDING UNITS & SENSORS

Jeep Wrangler Rubicon 2003 SENDING UNITS & SENSORS LOCATION

Component	Location
ABS Wheel Speed Sensor (4)	At each respective wheel assembly.
Ambient Temperature Sensor	Behind left front fender side shield.
Battery Temperature Sensor	On bottom of battery tray. See Fig. 4.
Camshaft Position Sensor (2.4L)	Right front of engine, behind air cleaner.
Camshaft Position Sensor (4.0L)	On right side of engine, near oil filter.
Crankshaft Position Sensor (2.4L)	On left transmission bellhousing, at left rear side of engine block. See Fig. 6.
Crankshaft Position Sensor (4.0L)	At rear of intake manifold.
Engine Coolant Temperature Sensor (4.0L)	On thermostat housing. See Fig. 2.
Engine Oil Pressure Sensor	Right side of engine block.
Oxygen Sensor 1/1 (Upstream)	On front exhaust pipe.
Oxygen Sensor 1/2 (Downstream)	On outlet end of mini-catalytic converter. See Fig. 2.
Oxygen Sensor 2/1 (Upstream)	On exhaust downpipe.
Oxygen Sensor 2/2 (Downstream)	Near breakout to ignition coil pack.
Input Speed Sensor	Near breakout to idle air control motor.
Intake Air Temperature (IAT) Sensor (4.0L)	On intake manifold plenum, near throttle body. See Fig. 2.
Manifold Absolute Pressure (MAP) Sensor (2.4L)	At top of engine. See Fig. 1.
Manifold Absolute Pressure (MAP) Sensor (4.0L)	On side of throttle body assembly. See Fig. 2.
Output Speed Sensor	At left rear side of transmission.
Throttle Position (TP) Sensor (4.0L)	On throttle body assembly. See Fig. 2.
Transmission Range Sensor	At left center of transmission.
Vehicle Speed Sensor (VSS)	On extension housing of transfer case. See Fig. 7.

Jeep Wrangler Rubicon 2003 - SOLENOIDS & SOLENOID VALVES

Jeep Wrangler Rubicon 2003 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Brake Transmission Shift Interlock Solenoid	Left side of steering column.
EVAP/Purge Solenoid	On left fender side shield.
Speed Control Servo	On left side of engine compartment.

Jeep Wrangler Rubicon 2003 - SWITCHES

Jeep Wrangler Rubicon 2003 SWITCHES LOCATION

Component	Location
A/C High Pressure Switch (4.0L)	On A/C compressor discharge line. See Fig. 2.
A/C Low Pressure Switch	On A/C accumulator.
Back-Up Lamp Switch	On left side of transmission.
Brake Lamp Switch	On bracket, above brake pedal.
Brake Warning Indicator Switch	In combination valve. See Fig. 4.
Clutch Pedal Position Switch	Top of clutch pedal bracket.
Engine Oil Pressure Switch (2.4L)	Below A/C compressor.
Engine Oil Pressure Switch (4.0L)	At right side of engine block.
G-Switch	In front of console/shifter, mounted to bracket on floorpan.
Park Brake Switch	On park brake mechanism.
Park/Neutral Position Switch	On left side of transmission.
Power Steering Pressure Switch (2.4L)	Behind power steering pump. See Fig. 1.
Rear Locker Indicator Switch	On top of rear differential.
Seat Belt Switch	In driver's seat belt buckle.
Stoplamp Switch	Top of brake pedal bracket.
Transfer Case Switch	On left side of transfer case. See Fig. 7.
Transmission Solenoid/Pressure Switch Assembly	At right center of transmission.

Jeep Wrangler Rubicon 2003 - MISCELLANEOUS

Jeep Wrangler Rubicon 2003 MISCELLANEOUS LOCATION

Component	Location
A/C Pressure Transducer	Near compressor.
Blower Motor Resistor Block	Under right side of dash, on HVAC module.
Data Link Connector	Bottom left end of dash.
Ignition Coil Capacitor	At right rear of engine.
Ignition Coil Pack (2.4L)	At right side of engine.
Ignition Coil Pack (4.0L)	At right rear of engine.
Leak Detection Pump	At right rear quarterpanel, forward of taillamp assembly.
Radio Choke & Relay	Behind lower center of dash.
Rear Locker Pump	On top of transfer case.

Jeep Wrangler Rubicon 2003 - CONNECTORS

Jeep Wrangler Rubicon 2003 CONNECTORS LOCATION

Component	Location
C103 (Black, 14 Pin)	At rear of engine compartment. See Fig. 4.
C104 (Gray, 14 Pin)	At rear of engine compartment. See Fig. 4.
C107 (Yellow, 14 Pin)	At left kick panel.
C108 (Blue, 14 Pin)	At left kick panel.
C109 (Light Gray, 10 Pin)	At rear of engine compartment.
C110 (Black, 14 Pin)	At left front fender side shield. See Fig. 4.
C115 (Black)	On transfer case.
C116 (Light Gray)	On transfer case.
C120 (Black)	At right side of radiator fan shroud.
C154 (Black, 4 Pin)	On top right rear of transmission.
C170 (Light Gray/Black, 10 Pin)	At left kick panel.
C180 (Black, 2 Pin)	Below EVAP/purge solenoid.
C181 (Black)	Left rear of engine. See Fig. 1.
C182 (Black)	Left rear of engine. See Fig. 1.
C202 (Gray, 12 Pin)	At left kick panel.
C203 (Green, 14 Pin)	At left kick panel.
C205 (Light Green, 10 Pin)	At left kick panel.
C324 (White/Black, 6 Pin)	At left side of sound bar.
C325 (White/Black, 6 Pin)	At left side of sound bar.
C326 (Black, 10 Pin)	At left rear quarterpanel.
C330 (Black/White, 6 Pin)	At left side of sound bar.

Jeep Wrangler Rubicon 2003 - GROUNDS

Jeep Wrangler Rubicon 2003 GROUNDS LOCATION

Component	Location
G100	On left center of firewall. See Fig. 4.
G101	On center of firewall. See Fig. 4.
G102	On left side of radiator closure panel.
G103	On right side of radiator closure panel.
G104	Near rear of generator.
G105	On left rear of engine block. See Fig. 1.
G106	On right rear of engine block.
G107	On right rear of engine block.
G110	Near left engine mount. See Fig. 1.
G190	Near right headlamp.
G191	Near right headlamp.
G200	Behind left end of dash.
G201	Behind left end of dash.
G202	Behind right end of dash.
G203	Behind right end of dash.
G300	At left kick panel.
G301	Between front seats.
G302	At left kick panel.
G303	Near steering column mounting bracket.

Jeep Wrangler Rubicon 2003 - SPLICES

Jeep Wrangler Rubicon 2003 SPLICES LOCATION

Component	Location
S101	Near breakout to power distribution center. See Fig. 4.
S102	At left side of firewall, near breakout to G100. See Fig. 4.
S103	At right center of firewall, near breakout to G101. See Fig. 4.
S105	Near breakout to daytime running lamp module.
S106	On left side of firewall. See Fig. 4.
S108	Near breakout to power distribution center. See Fig. 4.
S111	Near breakout to battery temperature sensor. See Fig. 4.
S113	Near breakout to G100, on left center of firewall. See Fig. 4.
S116	Near breakout to high note horn.
S117	Near breakout to high note horn.
S118	Near breakout to left headlamp.
S121	Near breakout to powertrain control module.
S122	Near grommet for left park/turn signal lamp.
S123 (2.4L)	Near breakout for ignition coil pack.
S123 (4.0L)	At rear of engine, near breakout to G105.
S124 (2.4L)	Near breakout for ignition coil pack.
S124 (4.0L)	At rear of engine, near breakout to G105.
S126	On rear of cylinder head, near breakout to C103.
S127 (4.0L)	Near breakout to idle air control motor. See Fig. 2.
S128 (2.4L)	On engine harness, near breakout for C103.
S128 (4.0L)	On engine harness, between fuel injectors No. 2 & No. 3. See Fig. 2.
S129	On rear of engine, near breakout to C104.
S130 (2.4L)	On engine harness, near breakout for C103.
S130 (4.0L)	On rear of engine, near breakout to C104.
S132 (2.4L)	Near breakout for engine starter solenoid.
S132 (4.0L)	At right side transmission.
S133 (2.4L)	Near breakout for input speed sensor.
S133 (4.0L)	At right side transmission.
S134 (2.4L)	Between engine starter solenoid & C182.
S134 (4.0L)	Near breakout for C154.
S135 (2.4L)	Between engine starter solenoid & C182.
S135 (4.0L)	Near breakout for oxygen sensor 1/2 (downstream).
S136	In battery harness, near power distribution center.
S137 (4.0L)	Near breakout to throttle position sensor. See Fig. 2.
S138	At center of radiator closure panel.
S140	Near breakout to C104.
S141	Near breakout to left front park/turn signal lamp.
S142	Near breakout to right park/turn signal lamp.
S143	Near breakout to left park/turn signal lamp.
S144	Near breakout to right park/turn signal lamp.
S147	On center of firewall, near breakout to underhood lamp. See Fig. 4.
S150	Near breakout to right headlamp.
S151	Near breakout to left headlamp.
S152	Near breakout to left headlamp.
S153	Near breakout to camshaft position sensor.
S154	Between engine starter solenoid & C181.
S155 (W/Daytime Running Lamps)	Near breakout to daytime running lamp control module. See Fig. 4.
S156	Near breakout to ABS pump motor. See Fig. 4.
S158	Near breakout for power steering pressure switch.
S159	Near breakout for power steering pressure switch.
S160	In breakout for transmission control module.
S161	Near breakout for ignition coil pack.
S162	Near breakout for oxygen sensor 1/1 (upstream)
S163	Between G101 & right front wheel speed sensor.
S164	Near breakout for rear locker indicator switch in-line C116.
S170	Near brake booster, 150 mm from G100.
S171	200 mm from battery temperature sensor breakout, toward G101.
S172	In harness, between G100 & C103.
S173	Near G100.
S176	In fuel injector harness.
S177	In fuel injector harness.
S178	In engine harness, near breakout for C103.
S204	Behind lower center of dash.
S206	Behind lower center of dash.
S207	Behind center of dash, near breakout to cigar lighter.
S208	Near breakout to blower motor.
S209	Behind left side of dash, near breakout to C202, C203 & C204.
S210	Near breakout to A/C heater control C3.
S211	Near breakout for C202.
S212	Near breakout to right courtesy lamp.
S213	Behind center rear of dash.
S214	Behind center rear of dash.
S215	Behind center rear of dash.
S216	Behind left side of dash.
S217	Behind left side of dash.
S302	Near breakout to ACM, between S315 & S331.
S304	Behind left side of dash, above steering column.
S309	At front of left door opening.
S310	At left rear quarterpanel, near body grommet.
S311	Near left taillamp connector.
S315	Forward of breakout behind left seat.
S316	In breakout to rear foglamp.
S317	Near breakout to left license plate lamp.
S320	Behind left side of dash, near 100-way connector.
S331	Behind left side of dash, near 100-way connector.
S335	Near left taillamp connector.
S351	Near breakout to sport bar.
S352	Forward of S351.
S353	Near breakout to sport bar.
S355	Near breakout to steering column.
S356	In harness, 254 mm from breakout to rear washer.
S357	In harness, 508 mm from breakout to rear washer.
S358	In harness, 762 mm from breakout to rear washer.
S359	Near fuse block.
S360	Near breakout for rear window defogger feed.
S361	Near breakout for rear window defogger feed.