Reminder Systems (MICU and Gauge Control Module) Input Test
Reminder Systems (MICU and Gauge Control Module) Input Test
NOTE:
- Before testing the reminder system control unit, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.
- Before testing the reminder system control unit, troubleshoot the F-CAN system first, using gauge control module self-diagnosis function Initial Inspection and Diagnostic Overview.
MICU (Common Test)
1. Turn the ignition switch to LOCK (0) and remove the left kick panel Service and Repair.
2. Disconnect 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 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, go to step 5.
GAUGE CONTROL MODULE (Common Test)
5. Disconnect 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 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, 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 Wiper/Washer Switch (Combination Switch Control Unit) Input Test and the combination light switch test Service and Repair.
- Seat belt reminder, check for SRS DTCs Reading and Clearing Diagnostic Trouble Codes.
- Low battery voltage reminder, do the battery sensor input test Battery Sensor Input Test.
Key-in reminder
8. Reconnect the under-dash fuse/relay box connectors, 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.
Parking Brake Reminder
9. Reconnect the gauge control module connectors, 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, replace the gauge control module Service and Repair.