Multiplex Control Unit Input Test
Multiplex Control Unit Input Test1. Remove the dashboard lower cover.
2. Unbolt the under-dash fuse/relay box and pull it down.
NOTE: All connectors are 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 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.