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.
2002 Jeep Liberty Limited, 4WD, Part TimeFACTORY OEM SERVICE PROCEDURE
Hard Wired Inputs
The hard wired inputs to the BCM include the following:
- A/C on/off control
- Ambient temperature sensor signal
- Body control module flash enable
- Door lock switch MUX
- Driver door ajar switch sense
- Flip-up glass ajar switch sense
- Flip-up glass release switch sense
- Fog lamp switch sense
- Front wiper park switch sense
- Front wiper switch MUX
- Front washer pump driver
- Fused B+
- Fused ignition switch output (run-acc)
- Fused ignition switch output (run-start)
- Headlamp switch MUX
- High beam switch sense
- Hood ajar switch sense (premium with VTSS) in markets where required only
- Key-in ignition switch sense
- Left cylinder lock switch sense (premium with VTSS only) omitted in some markets as required
- Panel lamps dimmer switch MUX
- Passenger door ajar switch sense (input from 3 ajar switches connected in parallel)
- Radio control MUX (premium with remote radio switches only)
- Rear courtesy lamp control
- Rear window defogger control
- Rear wiper intermittent driver
- Rear wiper on driver
- Right cylinder - lock switch sense (premium with VTSS only) omitted in some markets as required
- RKE antenna (2 circuits) premium with RKE only
- Tailgate ajar switch sense
- Tailgate cylinder lock switch sense
- Vehicle speed sensor
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.