Keyless/Power Door Lock System Control Unit Input Test

Keyless/Power Door Lock System Control Unit Input Test

NOTE: Before testing, troubleshoot the multiplex control system. Multiplex Control System Troubleshooting

1. Remove the driver's dashboard lower cover. Drivers Dashboard Lower Cover Removal/Installation

2. Disconnect under-dash fuse/relay box connectors C, F, J, K, M, P, Q, X and Y.
NOTE: All connectors are shown from wire side of female terminals.

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 4.

4. Reconnect all connections to the under-dash fuse/relay box, and do these input tests at the following connectors on the under-dash fuse/relay box.
- 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. Disconnect the connectors, and 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 input tests prove OK, the multiplex control unit must be faulty, replace the under-dash fuse/relay box assembly.