Automatic Lighting Control Unit Input Test

Automatic Lighting Control Unit Input Test

1. Before testing the automatic lighting control functions, troubleshoot the multiplex integrated control system using B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

2. Remove the driver's dashboard lower cover Driver's Dashboard Lower Cover Removal/Installation.

3. Disconnect the 14P connector (A) from the automatic lighting 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. Reconnect the automatic lighting control unit connector, then do these input tests at the following connectors.

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the inputs test prove OK, go to step 6.





6. Connect a voltmeter and jumper wires as shown, then turn the ignition switch to ON (II) and do this input test at the following connector.

- If test indicates a problem, find and correct the cause, then recheck the system.
- If the input test proves OK, replace the automatic lighting control unit.