Reminder Systems (Drivers MICU and Gauge Control Module) Input Test

Reminder Systems (Driver's MICU and Gauge Control Module) Input Test

NOTE: Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A.

Driver's MICU

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

2. Remove the driver's dashboard lower cover.

3. Disconnect driver's under-dash fuse/relay box connectors D, Q, and R.

NOTE: All connector views 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, 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.

8. Disconnect the 32P connector from it.





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 are OK, go to step 10.

10. Reconnect the connector 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 the input tests prove OK, go to step 11.





11. Do the Gauge Control Module Self-diagnostic Function, and check the beeper and the seat belt reminder indicator.

- If the beeper sounds and the seat belt reminder indicator flashes, go to step 12.
- If the beeper does not sound or the seat belt reminder indicator does not flash, replace the gauge control module.

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 driver's MICU is faulty; replace the driver's under-dash fuse/relay box.
- USA models
- Canada models