Safety Indicator System (MICU And Gauge Control Module) Input Test

Safety Indicator System (MICU and Gauge Control Module) Input Test

NOTE: Before testing, do the gauge control module self-diagnostic function Testing and Inspection to make sure the door indicator LED and the B-CAN communication line are OK.

MICU

1. Turn the ignition switch to LOCK (0).

2. Remove the fuse access panel Fuse Access Panel Removal / Installation, and remove the driver's dashboard lower cover Driver's Dashboard Lower Cover Removal / Installation.

3. Disconnect under-dash fuse/relay box connectors C, K, M, N, Q, and W.

NOTE: All connector views are shown from 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 look OK, go to step 5.

5. Reconnect the connectors, turn the ignition switch to ON (II), 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, and disconnect the 32P connector from it.





8. 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 9.

9. Reconnect the connector to the gauge control module, turn the ignition switch to ON (II), 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 10.





10. 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 under-dash fuse/relay box:
- USA model Under-Dash Fuse/Relay Box Removal and Installation (USA Models)
- Canada model Under-Dash Fuse/Relay Box Removal and Installation (Canada Models)