FRONT POWER SEAT CONTROL SYSTEM (w/ Memory), Diagnostic DTC:B2651

DTC Code DTC Name
B2651 Reclining Sensor Malfunction

DESCRIPTION

When the front power seat switch LH (w/ Memory) does not receive a sensor signal despite forward or backward movement of the seatback by power seat motor operation, this DTC is stored.

DTC Code DTC Detection Condition Trouble Area
B2651 The forward and backward lock detection position of the sensor is the same.

  • Front power seat switch LH (w/ Memory)

  • Reclining motor (Separate type front seatback assembly)

  • Wire harness or connector

WIRING DIAGRAM

A01EXGQE14

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (RECLINING MOTOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body / Driver Seat / Active Test.

    5. Perform the Active Test according to the display on the GTS.

      Driver Seat (Front Power Seat Switch LH (w/ Memory))
      Tester Display Test Part Control Ranger Diagnostic Note
      Seat Reclining Seat reclining operation OFF/Rear/Front -
      OK
      Motor operates normally.

    NG

    INSPECT RECLINING MOTOR (SEPARATE TYPE FRONT SEATBACK ASSEMBLY) Click here

    OK

  2. CHECK FRONT POWER SEAT SWITCH LH (W/ MEMORY) (RECLINING MOTOR CIRCUIT)


    1. Disconnect the g3 reclining motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      g3-2 - g3-3 Reclining switch on 4.8 to 5.1 V

    NG

    CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - RECLINING MOTOR) Click here

    OK

  3. CHECK RECLINING MOTOR (SEPARATE TYPE FRONT SEATBACK ASSEMBLY)


    1. A01EX74E43
      Text in Illustration
      *a

      Component with harness connected

      (Reclining Motor (Separate Type Front Seatback Assembly))

      Reconnect the g3 reclining motor connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      g3-2 - Body ground Reclining switch on 4.5 to 4.8 V

    NG

    REPLACE RECLINING MOTOR (SEPARATE TYPE FRONT SEATBACK ASSEMBLY) Click here

    OK

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here

  4. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - RECLINING MOTOR)


    1. Disconnect the e12 front power seat switch LH (w/ Memory) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e12-11 (SSRR) - g3-2 Always Below 1 Ω
      e12-1 (SGND) - g3-3 Always Below 1 Ω
      e12-11 (SSRR) - Body ground Always 10 kΩ or higher
      e12-1 (SGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here

  5. INSPECT RECLINING MOTOR (SEPARATE TYPE FRONT SEATBACK ASSEMBLY)


    1. A01EWJBE14
      Text in Illustration
      *a

      Component without harness connected

      (Reclining Motor (Separate Type Front Seatback Assembly))

      Disconnect the g3 reclining motor connector.

    2. Check if the seatback moves smoothly when the battery is connected to the reclining motor connector terminals.

      OK
      Measurement Condition Operational Direction

      Battery positive (+) → Terminal 4

      Battery negative (-) → Terminal 1

      		 Seatback moves forward

      Battery positive (+) → Terminal 1

      Battery negative (-) → Terminal 4

      		 Seatback moves backward

    NG

    REPLACE RECLINING MOTOR (SEPARATE TYPE FRONT SEATBACK ASSEMBLY) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH (W/ MEMORY) - RECLINING MOTOR)


    1. Disconnect the e11 front power seat switch LH (w/ Memory) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      e11-9 (RCL+) - g3-4 Always Below 1 Ω
      e11-11 (RCL-) - g3-1 Always Below 1 Ω
      e11-9 (RCL+) - Body ground Always 10 kΩ or higher
      e11-11 (RCL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here