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 Wrangler SE, AutomaticFACTORY OEM SERVICE PROCEDURE
Body Control Modules
- Description
- Operation
- Component Locations
- Programming
- Service Precautions
- Self-Diagnostic System
- System Tests
- Chime
- Notes
- Chime Inoperative At All Times
- Chime Inoperative With Driver's Seat Belt Unfastened
- Chime Inoperative With Exterior Lights On & Driver's Door Open
- Chime Inoperative With Key In Ignition, Driver's Door Open
- Chime Sounds With Driver's Seat Belt Fastened
- Chime Sounds With Driver's Door Open, Key Removed
- Communications
- Notes
- Bus (+) &/Or Bus (-) Open Or No Response From Instrument Cluster
- Bus (+) &/Or Bus (-) Open Or No Response From Sentry Key Immobilizer Module
- No Response From Air Bag Control Module
- No Response From Controller Anti-Lock Brake
- No Response From Powertrain Control Module (PCI Bus)
- No Response From Powertrain Control Module (SCI Only)
- Checking Powertrain Control Module Power & Ground Circuits
- PCI Bus Communication Failure
- Electrically Heated Systems
- Instrument Cluster
- Notes
- ACM Message Not Received By MIC
- Air Bag Light Circuit Open
- Air Bag Light Circuit Short
- CHECKSUM Failure
- Panel Dimmer Open
- PCM Message Not Received By MIC
- SKIM Message Not Received By MIC
- 4WD Indicator Inoperative
- ABS Indicator Inoperative
- Air Bag Indicator Inoperative
- All Gauges Inoperative
- Any PCI Bus Indicator Inoperative
- Brake Warning Indicator Always On
- Brake Warning Indicator Inoperative
- Foglight Indicator Inoperative
- High Beam Indicator Inoperative
- NO BUS In VF Display
- NO FUSE In VF Display
- One Gauge Inoperative
- Panel Dimming Inoperative
- Seat Belt Indicator Not Operating Properly
- VF Display Inoperative
- VF Odometer Inoperative With Door Open
- Interior Lighting
- Sentry Key Immobilizer System
- Notes
- Antenna Failure, COP Failure, EEPROM Failure, Internal Faults, RAM Failure, Serial Link Internal Or Stack Overflow Failure
- PCM Status Failure Or Serial Link External Fault
- Rolling Code Failure Or VIN Mismatch
- Transponder Cyclic Redundancy Check Failure, Transponder Communication Failure, Transponder Id Mismatch, Or Transponder Response Mismatch
- Chime
- Verification Tests
- Removal & Installation
- Wiring Diagrams
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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