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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 186 (Generator) >> On-Vehicle Testing >> Entering On-Board Diagnostics >> Malfunction Indicator Light Diagnostic Mode

Malfunction Indicator Light Diagnostic Mode

WARNING: This page is about a different car, the 1995 Jeep Wrangler, 1995 Jeep Grand Cherokee, and 1995 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine (if possible). On models equipped with automatic transmission, place foot on brake and cycle transmission shift lever through all positions, ending in Park. On all models, turn A/C switch on and then off (if equipped).
  2. Turn engine off. Without starting engine, turn ignition on, off, on, off and on. MIL will come on for 2 seconds as a bulb check, followed by DTCs. Record 2-digit DTCs as displayed by flashing MIL.
  3. Once the MIL begins to flash DTCs, it cannot be stopped. Repeat step 1) to enter diagnostic mode. Code 55 indicates end of DTC display. For more information on vehicle self-diagnostics, see the appropriate TESTS W/CODES article in the ENGINE PERFORMANCE section. Refer to the G - TESTS W/CODES ARTICLE MENU & LINKS  table.
  4. Refer to CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)  table to relate trouble code number to a system fault description (DRB display). Once trouble area is known, go to appropriate charging system test.
NOTE: The MIL cannot be used to perform actuation test mode, sensor test modes or engine running test. Diagnostic Trouble Codes (DTCs) can only be erased using DRB. DTCs will be erased from PCM memory after 50 engine starts if fault does not occur again.
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