Immobilizer-Keyless Control Unit Input Test

Immobilizer-Keyless Control Unit Input Test

NOTE: Before troubleshooting the immobilizer system, and check the No. 2 (20 A) fuse in the under-dash fuse/relay box and fuse No. 23 (10 A) in the under-hood fuse box.

1. Remove the steering column covers Service and Repair.

2. Disconnect the 7P connector (A) from the immobilizer-keyless control unit (B).





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 5.

4. With the connector still disconnected, do these input tests at the following 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 5.





5. Reconnect the connectors to the immobilizer-keyless control unit, and do these input tests at the following connector.

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the immobilizer-keyless control unit must be faulty; replace it.