Turn Signal/Hazard Warning Lights (MICU) Input Test

Turn Signal/Hazard Warning Lights (MICU) Input Test

NOTE:

- Before testing, troubleshoot the multiplex integrated control system first, using B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.
- Before testing, make sure the No. 10 (7.5 A) fuse in the under-dash fuse/relay box is OK.

1. Turn the ignition switch to LOCK (0)

2. Remove the dashboard lower cover Driver's Dashboard Lower Cover Removal/Installation.

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

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. 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 6.





*: With side turn signal lights

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