Safety Indicator Systems (Drivers and Passengers MICU, and Gauge Control Module) Input Test

Safety Indicator Systems (Driver's and Passenger's MICU, and Gauge Control Module) Input Test

NOTE:

- Before testing, troubleshoot the multiplex integrated control system first, using B-CAN System Diagnosis Test Mode A.
- Before testing, do the gauge control module self-diagnosis function, and make sure the safety indicator LEDs and B-CAN communication line are OK.

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 look OK, go to step 5.

5. Reconnect the connectors to the driver's under-dash fuse/relay box, 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.










Passenger's MICU

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

7. Remove the passenger's kick panel Service and Repair.

8. Disconnect passenger's under-dash fuse/relay box connectors A, E, and H.

NOTE: All connector views are wire side of female terminals.





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 passenger's under-dash fuse/relay box, 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.










Gauge Control Module

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

12. Remove the gauge control module Gauge Control Module Replacement, and disconnect the 32P connector from it.





13. 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 14.

14. 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 the input tests prove OK, go to step 15.





15. If multiple failures are found on more than one control unit, replace the driver's under-dash fuse/relay box (includes the driver's MICU).

- USA models
- Canada models

If input failures are related to a particular control unit, replace the control unit.