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

DESCRIPTION

When the shoulder belt anchorage switch's UP or DOWN switch is pressed, an UP or DOWN signal is sent to the front door ECU (driver 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 moves the shoulder belt anchor (driver side) up or down.

WIRING DIAGRAM

A0019EHE01
A0019EHE03

PROCEDURE


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


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

      Driver Door (Front door ECU LH*1) (Front door ECU RH*2):
      Item 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
      Switch operates

    OK

    CHECK SHOULDER BELT ANCHOR (for Driver Side) Click here

    NG

  2. INSPECT SHOULDER BELT ANCHORAGE SWITCH (for Driver Side)


    1. A001FBOE01

      Disconnect the P6 or P1 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
      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
      for RHD:
      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

    NG

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

    OK

  3. CHECK HARNESS AND CONNECTOR (ANCHORAGE SWITCH - FRONT DOOR ECU)


    1. Disconnect the P10 or D4 door ECU connector.

      A001DU9E01

    2. Disconnect the P6 or P1 switch connector.

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

      Standard resistance
      for LHD:
      Tester Connection Switch Condition Specified Condition
      P6-4 (UP) - P10-18 (DSUP) Always Below 1 Ω
      P6-3 (UL) - P10-28 (DSE) Always Below 1 Ω
      P6-2 (DW) - P10-17 (DSDN) Always Below 1 Ω
      for RHD:
      Tester Connection Switch Condition Specified Condition
      P1-2 (UP) - D4-18 (DSUP) Always Below 1 Ω
      P1-3 (UL) - D4-28 (DSE) Always Below 1 Ω
      P1-4 (DW) - D4-17 (DSDN) Always Below 1 Ω

    OK

    REPLACE FRONT DOOR ECU (for Driver Side)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. CHECK SHOULDER BELT ANCHOR (for Driver Side)


    1. A00196ME02

      Disconnect the S7 or R56 anchor connector.

    2. Connect the battery's positive lead to terminal 3 of the shoulder belt anchor, and the battery's negative lead to terminal 5. Check that the motor operates.

      OK
      Motor moves downward.

    3. Connect the battery's positive lead to terminal 5 of the shoulder belt anchor, and the battery's negative lead to terminal 3. Check that the motor operates.

      OK
      Motor moves upward.

    NG

    REPLACE SHOULDER BELT ANCHOR (for Driver Side) Click here

    OK

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


    1. Disconnect the S61 ECU connector.

      A001COGE01

    2. Disconnect the S7 or R56 anchor connector.

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

      Standard resistance
      for LHD:
      Tester Connection Condition Specified Condition
      S7-5 (UP) - S61-10 (DBM+) Always Below 1 Ω
      S7-3 (DW) - S61-8 (DBM-) Always Below 1 Ω
      for RHD:
      Tester Connection Condition Specified Condition
      R56-5 (UP) - S61-10 (DBM+) Always Below 1 Ω
      R56-3 (DW) - S61-8 (DBM-) Always Below 1 Ω

    OK

    REPLACE LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR