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.
2004 Jeep TJ (CANADA) L6-4.0LFACTORY OEM SERVICE PROCEDURE
Body Control Module
- Service Precautions
- Description and Operation
- Testing and Inspection
- Reading and Clearing Diagnostic Trouble Codes
- Symptom Related Diagnostic Procedures
- Air Bag System
- Audio System
- Chime System
- Chime Inoperative At All Times
- Chime Inoperative With Drivers Seat Belt Unfastened
- Chime Inoperative With Exterior Lights On and Drivers Door Open
- Chime Inoperative With Key In Ignition and Driver's Door Open
- Chime Sounds With Driver Seat Belt Fastened
- Chime Sounds With Drivers Door Open and Key Removed From Ignition
- Compass/Mini-Trip Computer
- Electrically Heated Systems
- Instrument Cluster
- "No Bus" In VF Display
- "No Fuse" In VF Display
- ABS Indicator Inoperative
- Air Bag Indicator Inoperative
- All Gauges Inoperative
- Any PCI Bus Indicator Inoperative
- Axle Lock Indicator Problems
- Brake Warning Indicator Always On
- Brake Warning Indicator Inoperative
- Fog Lamp Indicator Inoperative - Domestic
- High Beam Indicator Inoperative
- One Gauge Inoperative
- Panel Dimming Inoperative
- Rear Fog Lamp Indicator Inoperative - BUX Only
- Seat Belt Indicator Not Operating Properly
- Speedometer Inaccurate or Inoperative
- VF Display Inoperative
- VF Odometer Inoperative With Door Open
- 4WD Indicator Inoperative
- Interior Lighting
- Component Tests and General Diagnostics
- Scan Tool Testing and Procedures
- Diagrams
- Diagram Information and Instructions
- Diagnostic Aids
- Electrical Diagrams
- Tools and Equipment
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.