REAR POWER SEAT CONTROL SYSTEM Rear Power Seat Switch Circuit

DTC Code DTC Name
Rear Power Seat Switch Circuit

DESCRIPTION

When the rear power seat switch is operated, a recline signal is sent to the fold seat control ECU. The ECU activates the power seat motor based on the signal from the rear power seat switch.

WIRING DIAGRAM

B249960E01

PROCEDURE

  1. CHECK FOLD SEAT CONTROL ECU

    1. B243481C03

      *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

      Table 1. for LH Side

      Tester Connection

      Condition

      Specified Condition

      d1-12 (RCLF) - Body ground

      Rear power seat switch LH off

      11 to 14 V

      Rear power seat switch LH forward

      Below 1 V

      d1-13 (RCLR) - Body ground

      Rear power seat switch LH off

      11 to 14 V

      Rear power seat switch LH backward

      Below 1 V
      Table 2. RH side

      Tester Connection

      Condition

      Specified Condition

      c1-12 (RCLF) - Body ground

      Rear power seat switch RH off

      11 to 14 V

      Rear power seat switch RH forward

      Below 1 V

      c1-13 (RCLR) - Body ground

      Rear power seat switch RH off

      11 to 14 V

      Rear power seat switch RH backward

      Below 1 V

      Result

      Result

      OK

      NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

  2. INSPECT REAR POWER SEAT SWITCH

    1. B239690E02

      Remove the rear power seat switch

      Click here

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      4 (FWD) - 6 (E)

      Rear power seat switch off

      10 kΩ or higher

      Rear power seat switch forward

      Below 1 Ω

      5 (BACK) - 6 (E)

      Rear power seat switch off

      10 kΩ or higher

      Rear power seat switch backward

      Below 1 Ω

    Result

    Result

    OK

    NG
    NG

    REPLACE REAR POWER SEAT SWITCH

    Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - REAR POWER SEAT SWITCH)

    *1: for LH Side

    *2: for RH Side

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

    2. Disconnect the R14*1 or Q10*2 switch connector.

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

      Standard Resistance

      Table 3. for LH Side

      Tester Connection

      Condition

      Specified Condition

      d1-12 (RCLF) - R14-4 (FWD)

      Always

      Below 1 Ω

      d1-12 (RCLF) - Body ground

      Always

      10 kΩ or higher

      d1-13 (RCLR) - R14-5 (BACK)

      Always

      Below 1 Ω

      d1-13 (RCLR) - Body ground

      Always

      10 kΩ or higher
      Table 4. for RH Side

      Tester Connection

      Condition

      Specified Condition

      c1-12 (RCLF) - Q10-4 (FWD)

      Always

      Below 1 Ω

      c1-12 (RCLF) - Body ground

      Always

      10 kΩ or higher

      c1-13 (RCLR) - Q10-5 (BACK)

      Always

      Below 1 Ω

      c1-13 (RCLR) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    OK

    REPLACE FOLD SEAT CONTROL ECU

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR