Headlamp Alignment Control Module: Testing and Inspection

Headlight Leveling Control Unit Input Test/Replacement

1. Turn the ignition switch to LOCK (0) and open the glove box.

2. Remove the glove box stop on right side, then let the glove box hang down Service and Repair.

3. Disconnect the 16P connector (A) from the headlight leveling control unit (B).





4. Remove the harness clip and two screws, then remove the unit from the blower unit.

5. 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 are OK, go to step 6.

6. With the connector still disconnected, 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 7.





7. Reconnect the connector, turn the ignition switch to ON (II), and do the following input tests:

- If any test indicate a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the headlight leveling control unit.

NOTE: After replacing the control unit, do the headlight initial position learning procedure Programming and Relearning.