Keyless Entry Module: Testing and Inspection

Immobilizer-keyless Control Unit Input Test

NOTE: Before troubleshooting the immobilizer system, troubleshoot the B-CAN System Diagnosis Test Mode A, and check the No. 10 (7.5 A) and No. 38 (30 A) fuses in the under-dash fuse/relay box.

1. Remove the drivers dashboard lower cover.
2. Remove the steering column covers.




3. Disconnect the 7P connector (A) from the immobilizer-keyless control unit (B).
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 connector still disconnected, 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, go to step 6.




6. Reconnect the connectors to the immobilizer-keyless control unit, 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, the MICU must be faulty; replace the under-dash fuse/relay box.