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 Grand Cherokee OverlandFACTORY OEM SERVICE PROCEDURE
Check Engine Indicator Not Operating Properly
Possible Causes are:
- DTC Present
- Instrument Cluster
- Turn the ignition from the Lock to the Run position. This will start the MIL indicator bulb check. Did the Check Engine indicator illuminate for approximately 4 seconds and then go out? If yes, go to next step. If no, replace the instrument cluster. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
- Using the DRBIII(R), read ENGINE DTC's. Are there any PCM DTC's present? If yes, diagnose and repair driveability problem. See SYMPTOMS in TROUBLE SHOOTING - NO CODES article. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS. If no, test is complete.
Factory Service Tools
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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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