POWER SHOULDER BELT ANCHORAGE SYSTEM Front Passenger Side Seat Belt Anchor does not Operate Manually

DESCRIPTION

When the up or down switch of the shoulder belt anchorage switch is pressed, an UP or DOWN signal is sent to the front door ECU (passenger side). Then the signal is sent to the rear junction block ECU through CAN communication. Based on the received signal, the rear junction block ECU operates the shoulder belt anchor motor (passenger side) and moves the shoulder belt anchor (passenger side) up or down.

WIRING DIAGRAM

A0019EHE04
A0019EHE05

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (SHOULDER BELT ANCHORAGE SWITCH)


    1. Check the Data List for proper functioning of the shoulder belt anchorage switch.

      Passenger Door (Front door ECU RH*1) (Front door ECU LH*2) :
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      SEAT BELT ANCHOR UP Shoulder belt anchorage switch / OFF or ON

      ON: UP switch is pressed

      OFF: Switch is not pressed

      		 -
      SEAT BELT ANCHOR DOWN Shoulder belt anchorage switch / OFF or ON

      ON: DOWN switch is pressed

      OFF: Switch is not pressed

      		 -

      Tech Tips

      *1: for LHD

      *2: for RHD

      OK
      Data List display changes correctly according to switch operation.

    NG

    INSPECT SHOULDER BELT ANCHORAGE SWITCH (for Passenger Side) Click here

    OK

  2. CHECK SHOULDER BELT ANCHOR MOTOR (for Passenger Side)


    1. A001A9TE02

      Disconnect the R56 or S7 anchor connector.

    2. Apply battery voltage to the shoulder belt anchor motor.

    3. Check the motor operation.

      OK
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal 3

      Battery negative (-) → Terminal 5

      		 Motor moves downward

      Battery positive (+) → Terminal 5

      Battery negative (-) → Terminal 3

      		 Motor moves upward

    NG

    REPLACE SHOULDER BELT ANCHOR MOTOR (for Passenger Side) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (ANCHOR - REAR JUNCTION BLOCK ECU)


    1. Disconnect the R56 or S7 anchor connector.

      A001F1FE02

    2. Disconnect the S62 ECU connector.

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

      Standard resistance
      for LHD:
      Tester Connection Condition Specified Condition
      R56-5 (UP) - S62-10 (PBM+) Always Below 1 Ω
      R56-3 (DOWN) - S62-8 (PBM-) Always Below 1 Ω
      for RHD:
      Tester Connection Condition Specified Condition
      S7-5 (UP) - S62-10 (PBM+) Always Below 1 Ω
      S7-3 (DOWN) - S62-8 (PBM-) Always Below 1 Ω

    OK

    REPLACE LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT SHOULDER BELT ANCHORAGE SWITCH (for Passenger Side)


    1. A001FDRE02

      Disconnect the P1 or P6 switch connector.

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

      Standard resistance
      for LHD:
      Tester Connection Switch Condition Specified Condition
      P1-2 (UP) - P1-3 (UL) Not operated 10 kΩ or higher
      P1-4 (DW) - P1-3 (UL) Not operated 10 kΩ or higher
      P1-2 (UP) - P1-3 (UL) Operated to UP side Below 1 Ω
      P1-4 (DW) - P1-3 (UL) Operated to UP side 10 kΩ or higher
      P1-2 (UP) - P1-3 (UL) Operated to DOWN side 10 kΩ or higher
      P1-4 (DW) - P1-3 (UL) Operated to DOWN side Below 1 Ω
      for RHD:
      Tester Connection Switch Condition Specified Condition
      P6-4 (UP) - P6-3 (UL) Not operated 10 kΩ or higher
      P6-2 (DW) - P6-3 (UL) Not operated 10 kΩ or higher
      P6-4 (UP) - P6-3 (UL) Operated to UP side Below 1 Ω
      P6-2 (DW) - P6-3 (UL) Operated to UP side 10 kΩ or higher
      P6-4 (UP) - P6-3 (UL) Operated to DOWN side 10 kΩ or higher
      P6-2 (DW) - P6-3 (UL) Operated to DOWN side Below 1 Ω

    NG

    REPLACE SHOULDER BELT ANCHORAGE SWITCH (for Passenger Side) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (SHOULDER BELT ANCHORAGE SWITCH - FRONT DOOR ECU)


    1. Disconnect the P1 or P6 switch connector.

      A001CG3E01

    2. Disconnect the P4 or P10 ECU connector.

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

      Standard resistance
      for LHD:
      Tester Connection Condition Specified Condition
      P1-4 (UP) - P4-18 (PSUP) Always Below 1 Ω
      P1-3 (UL) - P4-28 (PSE) Always Below 1 Ω
      P1-2 (DW) - P4-17 (PSDN) Always Below 1 Ω
      for RHD:
      Tester Connection Condition Specified Condition
      P6-4 (UP) - P10-18 (PSUP) Always Below 1 Ω
      P6-3 (UL) - P10-28 (PSE) Always Below 1 Ω
      P6-2 (DW) - P10-17 (PSDN) Always Below 1 Ω

    OK

    REPLACE FRONT DOOR ECU (for Passenger Side)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR