Communication Between Immobilizer Control Unit and Test Equipment
WARNING: This page is about a different car, the 2005 Suzuki Swift +, 2005 Pontiac Wave, and 2005 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the test equipment as described in the Scan Tool Equipment Manual.
- If communication between the scan tool and the test equipment was unsuccessful, wait 30 seconds and try again.
- If communication was not successful on the second try, turn the ignition OFF and check the wire and connectors between the immobilizer control unit terminal 7 and the data link connector (DLC) terminal 7.
- If the wire and connectors between the DLC and the immobilizer control unit are okay, replace the immobilizer control unit. Refer to Theft Deterrent Control Module Replacement .