Component Tests and General Diagnostics

Control Unit Input Test

NOTE:
- Before testing, troubleshoot the B-CAN System Diagnosis Test Mode A.
- Before testing, troubleshoot the F-CAN System using the gauge control module self-diagnosis function.

MICU (Common Test)
1. Turn the ignition switch OFF, and remove the left kick panel.




2. Disconnect the under-dash fuse/relay box connectors E, H, P and Q.

NOTE: All connector views are 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. Reconnect the connectors, turn the ignition switch ON (II), and make these input tests at the connectors.
- 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.

GAUGE CONTROL MODULE (Common Test)




5. Disconnect the gauge control module connectors A (12P) and B (24P).

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

6. 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 7.




7. Reconnect the connectors, turn the ignition switch ON (II), and make these input tests at the connectors.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to the appropriate input test.
- Key-in reminder, go to step 8.
- Parking brake reminder, go to step 9.
- Lights-on reminder, do the combination switch control unit input test and the combination light switch test.
- Seat belt reminder, do the seat belt buckle switch test.

Key-in reminder




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

Parking Brake Reminder




9. Reconnect the gauge control module connectors, turn the ignition switch ON (II), and make these input tests at the connector.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the gauge control module.