REAR POWER SEAT CONTROL SYSTEM Fold Seat Switch Circuit

DESCRIPTION

When the fold seat switch is operated, a switch operation signal is sent to the fold seat control ECU. The ECU receives switch operation signals from each switch and activates the reclining motor and cushion motor.

WIRING DIAGRAM

A009BJ1E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOLD SEAT CONTROL ECU (FOLD SEAT SWITCH SIGNAL)


    1. Check the No. 1 fold seat switch signal.


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

        A0095FNE02

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

        Standard Voltage
        for LH Side
        Tester Connection Condition Specified Condition
        d1-10 (FLD2) - Body ground No. 1 fold seat switch LH off 11 to 14 V
        No. 1 fold seat switch LH fold Below 1 V
        d1-14 (RTN2) - Body ground No. 1 fold seat switch LH off 11 to 14 V
        No. 1 fold seat switch LH return Below 1 V
        for RH Side
        Tester Connection Condition Specified Condition
        c1-10 (FLD2) - Body ground No. 1 fold seat switch RH off 11 to 14 V
        No. 1 fold seat switch RH fold Below 1 V
        c1-14 (RTN2) - Body ground No. 1 fold seat switch RH off 11 to 14 V
        No. 1 fold seat switch RH return Below 1 V

    2. Check No. 2 fold seat switch signal.


      1. A0095FNE03
        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
        d1-15 (RTRN) - Body ground No. 2 fold seat switch LH off 11 to 14 V
        No. 2 fold seat switch LH return Below 1 V
        d1-16 (FOLD) - Body ground No. 2 fold seat switch LH off 11 to 14 V
        No. 2 fold seat switch LH fold Below 1 V
        for RH Side
        Tester Connection Condition Specified Condition
        c1-15 (RTRN) - Body ground No. 2 fold seat switch RH off 11 to 14 V
        No. 2 fold seat switch RH return Below 1 V
        c1-16 (FOLD) - Body ground No. 2 fold seat switch RH off 11 to 14 V
        No. 2 fold seat switch RH fold Below 1 V
        Result
        Result Proceed to
        OK A
        NG (No. 1 fold seat switch signal) B
        NG (No. 2 fold seat switch signal) C

    B

    INSPECT NO. 1 FOLD SEAT SWITCH ASSEMBLY Click here

    C

    INSPECT NO. 2 FOLD SEAT SWITCH ASSEMBLY Click here

    A

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

  2. INSPECT NO. 1 FOLD SEAT SWITCH ASSEMBLY


    1. A0095O9E01
      Text in Illustration
      *A for LH Side
      *B for RH Side

      Remove the No. 1 fold seat switch Click here.

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

      Standard Resistance
      for LH Side
      Tester Connection Switch Condition Specified Condition
      6 (FLDL) - 7 (E) No. 1 fold seat switch LH fold Below 1 Ω
      No. 1 fold seat switch LH off 10 kΩ or higher
      1 (RTNL) - 7 (E) No. 1 fold seat switch LH return Below 1 Ω
      No. 1 fold seat switch LH off 10 kΩ or higher
      for RH Side
      Tester Connection Switch Condition Specified Condition
      8 (FLDR) - 7 (E) No. 1 fold seat switch RH fold Below 1 Ω
      No. 1 fold seat switch RH off 10 kΩ or higher
      3 (RTNR) - 7 (E) No. 1 fold seat switch RH return Below 1 Ω
      No. 1 fold seat switch RH off 10 kΩ or higher

    NG

    REPLACE NO. 1 FOLD SEAT SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 1 FOLD SEAT SWITCH)


    • *1: for LH Side

    • *2: for RH Side


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

    2. Disconnect the Q11*1 or R33*2 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
      d1-10 (FLD2) - Q11-6 (FLDL) Always Below 1 Ω
      d1-10 (FLD2) - Body ground Always 10 kΩ or higher
      d1-14 (RTN2) - Q11-1 (RTNL) Always Below 1 Ω
      d1-14 (RTN2) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      c1-10 (FLD2) - R33-8 (FLDR) Always Below 1 Ω
      c1-10 (FLD2) - Body ground Always 10 kΩ or higher
      c1-14 (RTN2) - R33-3 (RTNR) Always Below 1 Ω
      c1-14 (RTN2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FOLD SEAT CONTROL ECU Click here

  4. INSPECT NO. 2 FOLD SEAT SWITCH ASSEMBLY


    1. A0095O9E02
      Text in Illustration
      *A for LH Side
      *B for RH Side

      Remove the No. 2 fold seat switch Click here.

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

      Standard Resistance
      for LH Side
      Tester Connection Switch Condition Specified Condition
      8 (FOLD) - 7 (E) No. 2 fold seat switch LH fold Below 1 Ω
      No. 2 fold seat switch LH off 10 kΩ or higher
      3 (RTRN) - 7 (E) No. 2 fold seat switch LH return Below 1 Ω
      No. 2 fold seat switch LH off 10 kΩ or higher
      for RH Side
      Tester Connection Switch Condition Specified Condition
      6 (FOLD) - 7 (E) No. 2 fold seat switch RH fold Below 1 Ω
      No. 2 fold seat switch RH off 10 kΩ or higher
      1 (RTRN) - 7 (E) No. 2 fold seat switch RH return Below 1 Ω
      No. 2 fold seat switch RH off 10 kΩ or higher

    NG

    REPLACE NO. 2 FOLD SEAT SWITCH ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 2 FOLD SEAT SWITCH)


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


      • *1: for LH Side

      • *2: for RH Side

    2. Disconnect the R12 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
      d1-15 (RTRN) - R12-3 (RTRN) Always Below 1 Ω
      d1-15 (RTRN) - Body ground Always 10 kΩ or higher
      d1-16 (FOLD) - R12-8 (FOLD) Always Below 1 Ω
      d1-16 (FOLD) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      c1-15 (RTRN) - R12-1 (RTRN) Always Below 1 Ω
      c1-15 (RTRN) - Body ground Always 10 kΩ or higher
      c1-16 (FOLD) - R12-6 (FOLD) Always Below 1 Ω
      c1-16 (FOLD) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FOLD SEAT CONTROL ECU Click here