Nissan Maxima Service and Repair Manual: Unlock sensor

Description

Detects door lock condition of driver door.

Component Function Check

1. CHECK FUNCTION

With CONSULT

Check unlock sensor UNLK SEN−DR in "Data Monitor" mode.

Nissan Maxima. CHECK FUNCTION

Diagnosis Procedure

1. CHECK UNLOCK SENSOR POWER SUPPLY

Nissan Maxima. CHECK UNLOCK SENSOR POWER SUPPLY

Check signal between BCM connector and ground with oscilloscope.

Nissan Maxima. CHECK UNLOCK SENSOR POWER SUPPLY

2. CHECK UNLOCK SENSOR CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect BCM and front door lock assembly LH connector.
  3. Check continuity between BCM connector and front door lock assembly LH connector.
  4. Check continuity between BCM connector and ground.

Nissan Maxima. CHECK UNLOCK SENSOR CIRCUIT

Nissan Maxima. CHECK UNLOCK SENSOR CIRCUIT

3. CHECK UNLOCK SENSOR GROUND CIRCUIT

Check continuity between front door lock assembly LH connector and grou

Nissan Maxima. CHECK UNLOCK SENSOR GROUND CIRCUIT

4. CHECK BCM OUTPUT SIGNAL

Nissan Maxima. CHECK BCM OUTPUT SIGNAL

  1. Connect BCM harness connector.
  2. Check signal between BCM connector and ground with oscilloscope.

Nissan Maxima. CHECK BCM OUTPUT SIGNAL

5. CHECK UNLOCK SENSOR

6. CHECK INTERMITTENT INCIDENT

Component Inspection

1. CHECK UNLOCK SENSOR

Check unlock sensor.

Nissan Maxima. CHECK UNLOCK SENSOR

    Key cylinder switch

    Trunk lid opener switch