MIL Circuit Troubleshooting
- Turn the ignition switch ON (II).
- Do the gauge self-diagnostic function (see
SELF-DIAGNOSTIC FUNCTION
).
Does the MIL indicator flash?
YES - Go to step 3.
NO - Substitute a known-good gauge control module, and recheck. If the MIL circuit is OK, replace the original gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).
- Connect the HDS to the DLC (see GENERAL TROUBLESHOOTING INFORMATION ).
- Check the SCS in the DATA LIST with the HDS.
Is a short indicated?
YES - Go to step 5.
NO - Update the PCM if it does not have the latest software (see PCM UPDATE ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM REPLACEMENT ).
- Turn the ignition switch OFF.
- Disconnect PCM connector A (49P), then disconnect the HDS.
- Check for continuity between PCM connector terminal A32 and body ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Repair short in the wire between the PCM (A32) and the SRS unit, the DLC.
NO - Update the PCM if it does not have the latest software (see PCM UPDATE ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM REPLACEMENT ).