Toyota Sienna Quiz
Engine hood / door

Back Door Closer does not Operate

In this manual: Engine hood / door
Introduction — 55Service specifications — 7Maintenance — 7Engine — 264U151e automatic transaxle — 108Transfer — 19Propeller shaft — 8Drive shaft — 14Differential — 16Axle — 18Suspension — 37Tire and wheel — 54Brake control — 141Parking brake — 16Steering Column — 11Power steering — 18Air conditioning — 106Supplemental restraint system — 146Seat belt — 22Theft deterrent — 14Engine immobiliser — 17Cruise control — 65Lighting — 61Wiper and washer — 13Door lock — 42Meter — 28Audio / visual — 94Navigation — 108Park assist / monitoring — 33Horn — 5Garage door opener — 42GR-FE Engine control system — 126Supplemental restraint system — 147Other system — 14Windshield / windowglass — 43Mirror — 23Instrument panel — 6Seat belt — 22Seat — 92Engine hood / door — 104Exterior — 39Interior — 5Sliding roof — 9Multiplex communication — 18Can communication — 23
11steps
~66min
3/5difficulty
Done 0 of 11

DESCRIPTION

The power back door ECU controls the back door closer system. In response to the signals output from the switches related to the back door lock, the back door latch activates the closer motor.

HINT: The back door closer system operates regardless of whether the power back door main switch is ON / OFF.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 INSPECT BACK DOOR LOCK

  1. Check that the back door fully closes (fully locked) when the door is closed by hand.

2 POWER SOURCE RESET

  1. Disconnect the ECU-B fuse and reconnect it. 10 seconds later, check whether the back door closer is operational.

3 INSPECT BACK DOOR LOCK ASSEMBLY

INSPECT BACK DOOR LOCK ASSEMBLY
  1. Check operation of the door lock.
  2. Using a screwdriver, push the latch in order to put the back door lock in the locked condition (full-latch position).
  3. Connect the battery positive (+) lead to terminal 1 and the battery negative (-) lead to terminal 2. Then, check operation of the latch.
OK: The latch turns to the open-latch position
  • Inspect motor operation when battery voltage is applied to the terminals.

    • OK

    INSPECT BACK DOOR LOCK ASSEMBLY
    INSPECT BACK DOOR LOCK ASSEMBLY
    1. Check the back door courtesy switch resistance.
    2. Check the resistance between the terminals of the courtesy switch.

    Resistance

    INSPECT BACK DOOR LOCK ASSEMBLY
    1. Check the back door latch switch resistance.
    2. Check the resistance between the terminals of the latch switch.

    Resistance

    INSPECT BACK DOOR LOCK ASSEMBLY
    1. Check the position switch resistance.
    2. Connect the battery positive (+) lead to connector terminal 1 and the negative (-) lead to connector terminal 2.

    Resistance

    INSPECT BACK DOOR LOCK ASSEMBLY

    4 CHECK WIRE HARNESS (BACK DOOR LOCK ASSEMBLY - POWER BACK DOOR ECU)

    CHECK WIRE HARNESS
    1. Disconnect the B10 lock and P13 ECU connectors.
    2. Check the resistance between the wire harness side connectors.

    Resistance (Check for open circuit)

    Check for open circuit
    1. Check the resistance between the B10 lock connector and body ground.

    Resistance (Check for open circuit)

    Check for open circuit

    REPLACE POWER BACK DOOR ECU

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