Nissan Maxima Service and Repair Manual: DTC/circuit diagnosis

  • Power supply and ground circuit
  • BCM BCM : Diagnosis Procedure 1. CHECK FUSE AND FUSIBLE LINK Check if the following BCM fuses or fusible link are blown. 2. CHECK POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect BCM. Check voltage between BCM harness connector and ground. 3. CHECK GROUND CIRCUIT Check continuity between BCM harness connector and ground. SUNROOF MOTOR ASSEMBLY SUNROOF MOTOR ASSEMBLY : Description BCM supplies power. CPU is integrated in sunroof motor assembly. Tilts up/down & slides open/close by sunroof switch operation.

  • Door switch
  • Description Detects door open/close condition. Component Function Check 1.CHECK FUNCTION With CONSULT Check door switches DOOR SW-DR, DOOR SW-AS in Data Monitor mode with CONSULT. Diagnosis Procedure 1.CHECK DOOR SWITCH INPUT SIGNAL Turn ignition switch OFF. Check signal between BCM connector and ground with oscilloscope. 2.CHECK DOOR SWITCH CIRCUIT Disconnect BCM connector. Check continuity between BCM connector and door switch connector. Check continuity between BCM connector and ground. 3.CHECK DOOR SWITCH 4.CHECK INTERMITTENT INC Component Inspection 1.CHECK DOOR SWITCH Turn ignition switch OFF. Disconnect door switch connector. Check door switch.

Diagnosis system (BCM)

Power supply and ground circuit