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Home >> Toyota >> 2009 >> Sienna LE, AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Power Door Lock Control System >> Only Back Door cannot be Opened >> Inspection Procedure

Inspection Procedure

  1. CHECK POWER BACK DOOR 
    1. Choose the system to be inspected.
      SYSTEM REFERENCE CHART

      System Go to step
      with power back door system A
      without power back door system B

    B:  Go to step  9

    A: Go to next step 

  2. CHECK DTC 
    1. Use Techstream to check for normal function of the multiplex communication system.
      1. (ECU unconnected, communication line malfunctioning) Without DTC B1214, B1215 or B1287 outputs, proceed to A.
      2. (ECU unconnected, communication line malfunctioning) With DTC B1214, B1215 or B1287 outputs, proceed to B

    B:  Go to MULTIPLEX COMMUNICATION SYSTEM

    A: Go to next step 

  3. PERFORM ACTIVE TEST BY TECHSTREAM 
    1. Select the Active Test and then check that the power door lock operates.

      HINT:

      During the Active Test, Techstream sends a signal to the body ECU to drive all the power door lock motors. If all the power door locks operate, the power door lock motors and the harness between the power door lock motors and body ECU are considered to be functioning normally.

      BODY (Multiplex network body ECU) 

      ACTIVE TEST

      Tester Display Test Part Control Range
      Door Lock Operate the door lock motor for all doors LOCK/UNLOCK

    OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU) 

    NG: Go to next step 

  4. INSPECT BACK DOOR LOCK ASSEMBLY 
    1. Check operation of the door lock.
      1. Using a screwdriver, push the latch in order to put the back door lock in the locked condition (full-latch position).
      2. Connect the battery positive (+) lead to terminal 1 and the battery negative (-) lead to terminal 2. Then, check operation of the latch.

        Standard: 

        The latch turns to the open-latch position 

      3. Inspect motor operation when battery voltage is applied to the normals.

        Standard 

        MEASUREMENT CONDITION SPECIFIED CONDITION CHART

        Measurement Condition Specified Condition
        Battery positive (+) → Terminal 2
        Battery negative (-) → Terminal 1        		 Clockwise (Motor in normal rotation)
        Battery positive (+) → Terminal 1
        Battery negative (-) → Terminal 2        		 Counterclockwise (Motor in reverse rotation)
        Fig 1: Identifying Back Door Lock Assembly Connector Terminals
        G05140906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the back door courtesy light switch resistance.
      1. Check the resistance between the terminals of the courtesy switch.

        Standard resistance 

        TERMINALS RESISTANCE CHART

        Terminal No. Door Lock Latch Position Specified Condition
        3-4 Open-latch position, Half- latch position Below 1 Ω
        Full-latch position, Over- latch position 10 kΩ or higher
    3. Check the back door latch switch resistance.
      1. Check the resistance between the terminals of the courtesy switch.

        Standard resistance 

        TERMINALS RESISTANCE CHART

        Terminal No. Door Lock Latch Position Specified Condition
        4-5 Open-latch position, Over-latch position Below 1 Ω
        Half-latch position, Full-latch position 10 kΩ or higher
    4. Check the position switch resistance.
      1. Connect the battery positive (+) lead to connector terminal 1 and the negative (-) lead to connector terminal 2.
      2. Check the resistance between the terminals of the courtesy switch.
        Fig 2: Identifying Door Lock Latch Position
        G04966437Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard resistance 

        TERMINALS RESISTANCE CHART

        Terminal No. Door Lock Latch Position Specified Condition
        4-6 Any position other than motor stop position (Motor in operation) 10 kΩ or higher
        Motor stop position (Gear in original position) Below 1 Ω

    NG: REPLACE BACK DOOR LOCK ASSEMBLY 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - POWER BACK DOOR ECU) 
    1. Disconnect the B10 lock and P13 ECU connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Symbol (Terminal No.) Specified Condition
      (B10-5) - HAF (P13-7) Below 1 Ω
      (B10-6) - POS (P13-21) Below 1 Ω
      (B10-3) - FUL (P13-8) Below 1 Ω
      (B10-1) - DC+ (P13-12) Below 1 Ω
      (B10-2) - DC- (P13-11) Below 1 Ω
      3. Fig 3: Identifying B10 Lock And P13 ECU Connectors
      G05140908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. READ VALUE OF TECHSTREAM 
    1. Using Techstream, check the Data List for proper functioning of the back door opener switch.

      BODY (Multiplex network body ECU) 

      DATA LIST

      Tester Display Measurement Item/Range Normal Condition
      Back Door Open SW Back door opener switch signal/ON or OFF ON: Back door opener switch is pushed
      OFF: Back door opener switch is not pushed

    OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU) 

    NG: Go to next step 

  7. INSPECT BACK DOOR OPENER SWITCH ASSEMBLY 
    1. Remove the back door opener switch.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Terminal No. Condition Specified Condition
      1-2 Free 10 kΩ or higher
      Pushed Below 1 Ω
      3. Fig 4: Identifying Back Door Opener Switch Connector Terminals
      G05140909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE BACK DOOR OPENER SWITCH ASSEMBLY 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH - POWER BACK DOOR ECU - BODY GROUND) 
    1. Disconnect the B12 switch and P13 ECU connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Symbol (Terminal No.) Specified Condition
      (B12-1) - HSW (P13-3) Below 1 Ω
      (B12-2) - Body ground Below 1 Ω
      3. Fig 5: Identifying B12 Switch And P13 ECU Connectors Terminals
      G05140910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU) 

  9. PERFORM ACTIVE TEST BY TECHSTREAM 
    1. Select the Active Test and then check that the power door lock operates.

      HINT:

      During the Active Test, Techstream sends a signal to the body ECU to drive all the power door lock motors. If all the power door locks operate, the power door lock motors and the harness between the power door lock motors and body ECU are considered to be functioning normally.

      BODY (Multiplex network body ECU) 

      ACTIVE TEST

      Tester Display Test Part Control Range
      Door Lock Operate the door lock motor for all door LOCK/UNLOCK

    OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU) 

    NG: Go to next step 

  10. INSPECT BACK DOOR LOCK ASSEMBLY 
    1. Check operation of the door lock.
      1. Using a screwdriver, push the latch in order to put the back door lock in the locked condition (full-latch position).
      2. Connect the battery positive (+) lead to terminal 3 and the battery negative (-) lead to terminal 1. Then, check operation of the latch.

        Standard: 

        The latch turns to the open-latch position 

      3. Inspect motor operation when battery voltage is applied to the normals.

        Standard 

        MEASUREMENT CONDITION SPECIFIED CONDITION CHART

        Measurement Condition Specified Condition
        Battery positive (+) → Terminal 3
        Battery negative (-) → Terminal 1        		 Clockwise (Motor in normal rotation)
    2. Inspect the resistance of the courtesy switch.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Terminal No. Door Lock Latch Position Specified Condition
      5-6 Open-latch position Below 1 Ω
      5-6 Full-latch position 10 kΩ or higher
      Fig 6: Identifying Back Door Lock In Locked Condition (Full-Latch Position)
      G05140911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE BACK DOOR LOCK ASSEMBLY 

    OK: Go to next step 

  11. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - DRIVER SIDE J/B) 
    1. Disconnect the B11 lock, B6 and P7 ECU connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Symbol (Terminal No.) Specified Condition
      (B11-3) - TR+ (B6-1) Below 1 Ω
      (B11-6) - BCTY (B7-25) Below 1 Ω
      (B11-1) - Body ground Below 1 Ω
      (B11-5) - Body ground Below 1 Ω
      3. Fig 7: Identifying B11 Lock, B6 And P7 ECU Connectors Terminals
      G05140912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  12. READ VALUE OF TECHSTREAM 
    1. Using Techstream, check the Data List for proper functioning of the back door opener switch.

      BODY 

      DATA LIST

      Tester Display Measurement Item/Range Normal Condition
      Back Door Open SW Back door opener switch signal/ON or OFF ON: Back door opener switch is pushed
      OFF: Back door opener switch is not pushed

    OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU) 

    NG: Go to next step 

  13. INSPECT BACK DOOR OPENER SWITCH ASSEMBLY 
    1. Remove the back door opener switch.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Terminal No. Condition Specified Condition
      1-2 Free 10 kΩ or higher
      Pushed Below 1 Ω
      3. Fig 8: Inspecting Back Door Opener Switch Assembly
      G05140913Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE BACK DOOR OPENER SWITCH ASSEMBLY 

    OK: Go to next step 

  14. CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH - DRIVER SIDE J/B) 
    1. Disconnect the B12 switch and P7 ECU connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Symbol (Terminal No.) Specified Condition
      (B12-1) - BDSU (B7-3) Below 1 Ω
      (B12-2) - Body ground Below 1 Ω
      3. Fig 9: Identifying B12 Switch And P7 ECU Connectors Terminals
      G05140914Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU) 

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