FRONT POWER SEAT CONTROL SYSTEM Front Passenger Seat Full Front and Return Operation does not Function with Power Seat Switch

DESCRIPTION

When the power seat switch assembly's full front switch or the rear power seat module switch's FRONT switch is pressed, switch information is sent from the rear power seat module switch to the front power seat switch (passenger seat ECU) through CAN communication. Then the front power seat switch (passenger seat ECU) moves the front passenger seat to the full front position. When the power seat switch assembly's return switch or rear power seat module switch's RETURN switch is pressed and held, the front passenger seat return operation occurs.

WIRING DIAGRAM

A01H1BCE03
A01GYK5E05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FRONT POWER SEAT CONTROL FUNCTION


    1. Check that each function of the power seat operates normally by using the front power seat switches.

      OK
      Each function of power seat operates normally by using seat switches.

    NG

    GO TO PROBLEM SYMPTOMS TABLE Click here

    OK

  2. READ VALUE USING INTELLIGENT TESTER (REAR POWER SEAT MODULE SWITCH)


    1. Check the Data List for proper functioning of the rear power seat switch.

      Rear Console Switch
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Seat Full Front Switch Front passenger seat full front switch signal (Forward) / ON or OFF

      ON: Front passenger seat full front switch (Forward) is ON

      OFF: Front passenger seat full front switch (Forward) is OFF

      		 -
      P Seat Return Switch Front passenger seat full front switch signal (Return) / ON or OFF

      ON: Front passenger seat full front switch (Return) is ON

      OFF: : Front passenger seat full front switch (Return) is OFF

      		 -
      OK
      On tester screen, each item changes between ON and OFF according to above chart.
      Result
      Result Proceed to
      OK A
      NG (for Power Seat) B
      NG (for 4-Passenger with Ottoman) C
      NG (for 5-Passenger with Ottoman) D

    B

    REPLACE REAR POWER SEAT MODULE SWITCH Click here

    C

    REPLACE REAR POWER SEAT MODULE SWITCH Click here

    D

    REPLACE REAR POWER SEAT MODULE SWITCH Click here

    A

  3. CHECK VEHICLE TYPE

    Result
    Result Proceed to
    except 5-Passenger with Ottoman A
    for 5-Passenger with Ottoman B

    B

    READ VALUE USING INTELLIGENT TESTER (POWER SEAT SWITCH) Click here

    A

  4. READ VALUE USING INTELLIGENT TESTER (POWER SEAT SWITCH)


    1. Check the Data List for proper functioning of the power seat switch.

      Passenger Seat
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Seat Slide Front From D Seat Passenger seat shoulder slide switch signal (Forward)/ ON or OFF

      ON: Passenger seat shoulder slide switch (Forward) is ON

      OFF: Passenger seat shoulder slide switch (Forward) is OFF

      		 -
      P Seat Slide Back From D Seat Passenger seat shoulder slide switch signal (Rearward)/ ON or OFF

      ON: Passenger seat shoulder slide switch (Rearward) is ON

      OFF: Passenger seat shoulder slide switch (Rearward) is OFF

      		 -
      P Seat Incline From D Seat Passenger seat shoulder full front switch signal (Forward)/ ON or OFF

      ON: Passenger seat shoulder full front switch (Forward) is ON

      OFF: Passenger seat shoulder full front switch (Forward) is OFF

      		 -
      P Seat Recline From D Seat Passenger seat shoulder full front switch signal (Rearward)/ ON or OFF

      ON: Passenger seat shoulder full front switch (Rearward) is ON

      OFF: Passenger seat shoulder full front switch (Rearward) is OFF

      		 -
      OK
      On tester screen, each item changes between ON and OFF according to above chart.

    NG

    INSPECT POWER SEAT SWITCH ASSEMBLY Click here

    OK

    REPLACE FRONT POWER SEAT SWITCH (for Passenger Side) Click here

  5. INSPECT POWER SEAT SWITCH ASSEMBLY


    1. A01GXU4E01

      Remove the switch Click here.

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

      Standard resistance
      for LHD
      Tester Connection Switch Condition Specified Condition
      4 (HRFS) - 3 (E) Full front switch (forward) is ON Below 1 Ω
      5 (HRRS) - 3 (E) Full front switch (rearward) is ON Below 1 Ω
      2 (SLDF) - 3 (E) Slide switch (forward) is ON Below 1 Ω
      1 (SLDR) - 3 (E) Slide switch (rearward) is ON Below 1 Ω
      for RHD
      Tester Connection Switch Condition Specified Condition
      2 (HRFS) - 3 (E) Full front switch (forward) is ON Below 1 Ω
      1 (HRRS) - 3 (E) Full front switch (rearward) is ON Below 1 Ω
      4 (SLDF) - 3 (E) Slide switch (forward) is ON Below 1 Ω
      5 (SLDR) - 3 (E) Slide switch (rearward) is ON Below 1 Ω

    NG

    REPLACE POWER SEAT SWITCH ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT SWITCH ASSEMBLY AND BODY GROUND)

    A01GW4XE02

    1. for LHD:

      Disconnect the e20 and e30 switch connectors.

    2. for RHD:

      Disconnect the e72 and e74 switch connectors.

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

      Standard resistance
      for LHD
      Tester Connection Condition Specified Condition
      e20-16 (SLDR) - e30-1 (SLDR) Always Below 1 Ω
      e20-17 (SLDF) - e30-2 (SLDF) Always Below 1 Ω
      e20-15 (HRFS) - e30-4 (HRFS) Always Below 1 Ω
      e20-14 (HRRS) - e30-5 (HRRS) Always Below 1 Ω
      e30-3 (E) - Body ground Always Below 1 Ω
      e20-16 (SLDR) - Body ground Always 10 kΩ or higher
      e20-17 (SLDF) - Body ground Always 10 kΩ or higher
      e20-15 (HRFS) - Body ground Always 10 kΩ or higher
      e20-14 (HRRS) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      e72-16 (SLDR) - e74-5 (SLDR) Always Below 1 Ω
      e72-17 (SLDF) - e74-4 (SLDF) Always Below 1 Ω
      e72-15 (HRFS) - e74-2 (HRFS) Always Below 1 Ω
      e72-14 (HRRS) - e74-1 (HRRS) Always Below 1 Ω
      e74-3 (E) - Body ground Always Below 1 Ω
      e72-16 (SLDR) - Body ground Always 10 kΩ or higher
      e72-17 (SLDF) - Body ground Always 10 kΩ or higher
      e72-15 (HRFS) - Body ground Always 10 kΩ or higher
      e72-14 (HRRS) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER SEAT SWITCH (for Passenger Side) Click here

  7. READ VALUE USING INTELLIGENT TESTER (POWER SEAT SWITCH)


    1. Check the Data List for proper functioning of the power seat switch.

      Center Console Switch
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Passenger Seat Slide Switch (Forward) Front passenger seat slide switch signal (Forward) / ON or OFF

      ON: Front passenger seat slide switch (Forward) is ON

      OFF: Front passenger seat slide switch (Forward) is OFF

      		 -
      Passenger Seat Slide Switch (Backward) Front passenger seat slide switch signal (Backward) / ON or OFF

      ON: Front passenger seat slide switch (Backward) is ON

      OFF: Front passenger seat slide switch (Backward) is OFF

      		 -
      Passenger Seat Recline Switch (Forward) Front passenger seat full front switch signal (Forward) / ON or OFF

      ON: Front passenger seat full front switch (Forward) is ON

      OFF: Front passenger seat full front switch (Forward) is OFF

      		 -
      Passenger Seat Recline Switch (Backward) Front passenger seat full front switch signal (Backward) / ON or OFF

      ON: Front passenger seat full front switch (Backward) is ON

      OFF: Front passenger seat full front switch (Backward) is OFF

      		 -
      OK
      On tester screen, each item changes between ON and OFF according to above chart.

    NG

    INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY (NO. 2 CONSOLE SWITCH) Click here

    OK

    REPLACE COMBINATION SWITCH ASSEMBLY (NO. 1 CONSOLE SWITCH)

  8. INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY (NO. 2 CONSOLE SWITCH)


    1. A01GZ0BE01

      Remove the No. 2 console switch Click here.

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      7 - 10 Slide Switch (forward) is ON Below 200 Ω
      15 - 10 Slide Switch (backward) is ON Below 200 Ω
      8 - 10 Full front switch (forward) is ON Below 200 Ω
      16 - 10 Full front switch (backward) is ON Below 200 Ω

    NG

    REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY (NO. 2 CONSOLE SWITCH) Click here

    OK

    REPLACE COMBINATION SWITCH ASSEMBLY (NO. 1 CONSOLE SWITCH)