Nissan Maxima Service and Repair Manual: Lifting sensor (rear)

Description

  • The lifting sensor (rear) is installed to the seat frame.
  • The pulse signal is input to the driver seat control unit when the lifting (rear) is operated.
  • The driver seat control unit counts the pulse and calculates the lifting (rear) amount of the seat.

Component Function Check

1. CHECK FUNCTION

  1. Select "LIFT RR PULSE" in "DATA MONITOR" mode with CONSULT.
  2. Check lifting sensor (rear) signal under the following conditions

Nissan Maxima. CHECK FUNCTION

Diagnosis Procedure

1. CHECK LIFTING SENSOR (REAR) SIGNAL

  1. Turn ignition switch ON.
  2. Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.

Nissan Maxima. CHECK LIFTING SENSOR (REAR) SIGNAL

2. CHECK LIFTING SENSOR (REAR) CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect driver seat control unit and front power seat LH [lifting motor (rear)].
  3. Check the continuity between driver seat control unit harness connector and front power seat LH [lifting motor (rear)] harness connector.

Nissan Maxima.  CHECK LIFTING SENSOR (REAR) CIRCUIT

  1. Check the continuity between driver seat control unit harness connector and ground.

Nissan Maxima.  CHECK LIFTING SENSOR (REAR) CIRCUIT

3. CHECK LIFTING SENSOR (REAR) POWER SUPPLY

  1. Connect driver seat control unit.
  2. Turn ignition switch ON.
  3. Check the voltage between front power seat LH [lifting motor (rear)] harness connector and ground.

Nissan Maxima. CHECK LIFTING SENSOR (REAR) POWER SUPPLY

4. CHECK LIFTING SENSOR (REAR) POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect driver seat control unit.
  3. Check the continuity between driver seat control unit harness connector and front power seat LH [lifting motor (rear)] harness connector

Nissan Maxima. CHECK LIFTING SENSOR (REAR) POWER SUPPLY CIRCUIT

  1. Check the continuity between driver seat control unit harness connector and ground.

Nissan Maxima. CHECK LIFTING SENSOR (REAR) POWER SUPPLY CIRCUIT

5. CHECK LIFTING SENSOR (REAR) GROUND

Nissan Maxima. CHECK LIFTING SENSOR (REAR) GROUND

  1. Turn ignition switch OFF.
  2. Check the continuity between front power seat LH [lifting motor (rear)] harness connector and ground.

Nissan Maxima. CHECK LIFTING SENSOR (REAR) GROUND

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