Instrument Panel, Gauges and Warning Indicators: Testing and Inspection
Reminder Systems (MICU and Gauge Control Module) Input Test
MICU
1. Turn the ignition switch to LOCK (0).
2. Remove the left kick panel Service and Repair.
3. Disconnect the driver's under-dash fuse/relay box connectors E, H, P, and Q.
NOTE: All connectors are wire side of female terminals.
4. Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals are OK, go to step 5.
5. Reconnect the connectors, and do the following input tests.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 6.
Gauge Control Module
6. Turn the ignition switch to LOCK (0).
7. Remove the gauge control module Service and Repair.
8. Disconnect gauge control module connectors A (20P) and B (28P).
9. Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 10.
10. Reconnect the connectors to the gauge control module, and do the following input tests.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 11.
11. Do the gauge self-diagnostic procedure Testing and Inspection.
- If the beeper sounds and the seat belt reminder light flashes, go to step 12.
- If the beeper does not sound or the seat belt reminder light does not flash, replace the gauge control module Service and Repair.
12. Substitute a known-good gauge control module, and recheck the system.
- If the symptom is gone, the gauge control module is faulty; replace it Service and Repair.
- If the symptom is still present, the MICU is faulty; replace the driver's under-dash fuse/relay box Drivers Under-Dash Fuse/Relay Box (MICU) Removal/Installation.