REAR POWER SEAT CONTROL SYSTEM Park / Neutral Position Switch Circuit

DESCRIPTION

The fold seat control ECU receives signals from the park/neutral position switch and controls the seat folding and return operations. If the shift lever is in any position other than P when the ignition switch is ON, the seat cannot be operated.

WIRING DIAGRAM

A01DUVAE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOLD SEAT CONTROL ECU (PARK/NEUTRAL POSITION SWITCH SIGNAL)


    1. A01DQ2VE01
      Text in Illustration
      *A for LH Side
      *B for RH Side
      *a

      Component with harness connected

      (Fold Seat Control ECU)

      Remove the fold seat control ECU with its connectors still connected Click here.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      for LH Side
      Tester Connection Condition Specified Condition
      d1-6 (P) - Body ground

      Ignition switch ACC or ON

      Shift lever in P

      		 11 to 14 V

      Ignition switch ACC or ON

      Shift lever not in P

      		 Below 1 V
      for RH Side
      Tester Connection Condition Specified Condition
      c1-6 (P) - Body ground

      Ignition switch ACC or ON

      Shift lever in P

      		 11 to 14 V

      Ignition switch ACC or ON

      Shift lever not in P

      		 Below 1 V

    NG

    CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY) Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY)


    1. A01DLV4E31
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Park/Neutral Position Switch Assembly)

      Disconnect the C40 switch connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C40-2 (RB) - Body ground Ignition switch ACC or ON 11 to 14 V
      Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. A01DN6ZE05

      Disconnect the C40 switch connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (RB) - 6 (PL) Shift lever in P Below 1 Ω
      2 (RB) - 6 (PL) Shift lever not in P 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for A343F Automatic Transmission) B
      NG (for A750F Automatic Transmission) C

    B

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    C

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    A

  4. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - PARK/NEUTRAL POSITION SWITCH)


    1. Disconnect the d1*1 or c1*2 ECU connector.


      • *1: for LH Side

      • *2: for RH Side

    2. Disconnect the C40 switch connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      d1-6 (P) - C40-6 (PL) Always Below 1 Ω
      d1-6 (P) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      c1-6 (P) - C40-6 (PL) Always Below 1 Ω
      c1-6 (P) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FOLD SEAT CONTROL ECU Click here