Keyless/Power Door Locks/Security System (MICU) Input Test

Keyless/Power Door Locks/Security System (MICU) Input Test

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

2. Remove the driver's dashboard undercover Driver's Dashboard Undercover Removal/Installation.

3. Check the No. 10 (7.5 A) and No. 25 (20 A) fuses in the under-dash fuse/relay box. If any fuse is blown, replace it and go to step 4.

4. Disconnect under-dash fuse/relay box connectors E, F, G, M, N, Q, R, and T.

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










5. 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 6.

6. With the connector still disconnected, do these input tests at the following connector.

- 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 7.









7. Reconnect the connectors to the under-dash fuse/relay box, turn the ignition switch to ON (II), and do these input tests at the following connectors.

- 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/Installation.