Nissan Murano: Door & Lock :: Dtc/circuit Diagnosis / Unlock Sensor

Component Function Check

CHECK FUNCTION

CONSULT

1. Select “UNLK SEN-DR” in “Data Monitor” mode of “BCM(INTELLIGENT KEY)”.

2. Check that the function operates normally according to the following conditions:

Is the inspection result normal?

Unlock sensor is OK.

Refer to Diagnosis Procedure.

CHECK UNLOCK SENSOR INPUT SIGNAL

1. Ignition switch OFF.

2. Disconnect front door lock assembly LH connector.

3. Check signal between front door lock assembly LH harness connector and ground with oscilloscope.

   (+)		(–)	Signal (Reference value)
   Front door lock assembly LH
   Connector	Terminal
   D14	3	Ground

Is the inspection result normal?

GO TO 3.

GO TO 2.

CHECK UNLOCK SENSOR CIRCUIT

1. Disconnect BCM connector.

2. Check continuity between BCM harness connector and front door lock assembly LH harness connector.

   BCM		Front door lock assembly LH		Continuity
   Connector	Terminal	Connector	Terminal
   M18	30	D14	3	Yes

3. Check continuity between BCM harness connector and ground.

   BCM		Ground	Continuity
   Connector	Terminal
   M18	30		No

Is the inspection result normal?

Replace BCM. Refer to Removal and Installation.

Repair or replace harness.

CHECK UNLOCK SENSOR GROUND CIRCUIT

Check continuity between front door lock assembly LH harness connector and ground.

Is the inspection result normal?

GO TO 4.

Repair or replace harness.

CHECK UNLOCK SENSOR

Refer to Component Inspection.

Is the inspection result normal?

GO TO 5.

Replace front door lock assembly LH. Refer to Removal and Installation.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

Inspection End.

CHECK UNLOCK SENSOR

1. Ignition switch OFF.

2. Disconnect front door lock assembly LH connector.

3. Check continuity between front door lock assembly LH terminals.

Is the inspection result normal?

Inspection End.

Replace front door lock assembly LH. Refer to Removal and Installation.