Driver's-To-Passenger's Multiplex Control Unit Or To Driver's Power Seat Multiplex Control Unit (With DPMS)

Turn ignition off. Check continuity in communication line (Pink wire) between driver's multiplex control unit harness connector terminal B1, passenger's multiplex control unit harness connector terminal B9, and driver's power seat multiplex control unit harness connector terminal C4 (if equipped with DPMS). See Figure , Figure and Figure . See WIRING DIAGRAMS . If continuity exists between all 3 control units, go to next step. If continuity does not exist between all 3 control units, repair open in Pink wire. After repairs, recheck DTCs.
Turn ignition on. Check voltage in communication line (Pink wire) between ground and following:
- Driver's multiplex control unit harness connector terminal B1.
- Passenger's multiplex control unit harness connector terminal B9.
- Driver's power seat multiplex control unit harness connector terminal C4 (if equipped with DPMS).
Voltage should be 3-10 volts. If voltage is not as specified, go to next step.
If voltage is greater than 10 volts, check for short in circuit or poor contact, or faulty circuit at connector on receiver side of unit. If voltage is less than 3 volts, check for short to ground or short to another wire in circuit. Check for poor contact or faulty circuit at connector on transmitter side of unit. Repair as necessary. After repairs, recheck DTCs.