Exterior Lights (MICU) Input Test

Exterior Lights (MICU) Input Test

NOTE:
* Refer to the Electrical Wiring Diagrams for the location of the under-dash fuse/relay box connectors.
* Before testing, make sure the No. A16 (10 A), No. A24 (10 A), No. A25 (10 A), No. A26 (20 A), and No. A29 (10 A) fuses in the under-hood fuse/relay box are OK.
* Before testing, make sure the No. B5 (10 A), No. B34 (7.5 A), No. B38 (10 A), and No. B39 (10 A) fuses in the under-dash fuse/relay box are OK.

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

2. Disconnect under-dash fuse/relay box connectors B, C, D, P, T, and W Under-Dash Fuse/Relay Box Removal and Installation.

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




3. 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 4.

4. With the connectors still disconnected, 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 5.





5. Reconnect the connectors to the under-dash fuse/relay box, 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, the MICU must be faulty; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal and Installation.