Wipers/Washers (MICU) Input Test

Wipers/Washers (MICU) Input Test

NOTE: Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A, and check the No. 38 (30 A) fuse in the under-dash fuse/relay box.

1. Turn the ignition switch to LOCK (0), and remove the driver's dashboard lower cover Driver's Dashboard Lower Cover Removal/Installation.

2. Disconnect under-dash fuse/relay box connectors E, F, R, S, and T.

NOTE: All connector views are shown from the wire side of 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 look OK, go to step 4.

4. With the connector 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, 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, the MICU must be faulty; replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal And Installation.