Driver's Multiplex Control Unit Input Test
- Remove driver's multiplex control unit from driver's underdash fuse/relay block. See DRIVER'S MULTIPLEX CONTROL UNIT under REMOVAL & INSTALLATION. Check driver's multiplex control unit and all pertinent connectors for loose, damaged or corroded terminals. See Fig 1 . If problem exists, repair connectors as necessary. If problem does not exist, go to next step.
- Perform driver's multiplex control unit input tests. See Fig 1 -Fig 2 . If any input is not as specified, repair indicated problem. If all inputs are as specified, go to next step.
- Check passenger's multiplex control unit. See PASSENGER'S MULTIPLEX CONTROL UNIT INPUT TEST .