POWER BACK DOOR SYSTEM Power Back Door cannot be Operated Using Any Switch

DESCRIPTION

When the power back door cannot be operated using any switch, one of the following may be the cause: 1) initialization of the multiplex network door ECU, 2) power back door sensor assembly circuit, 3) power back door ON/OFF signal circuit, 4) back door closer system, 5) meter/gauge system, 6) multiplex network door ECU power source circuit or 7) multiplex network door ECU.

WIRING DIAGRAM

B002JVME06

CAUTION / NOTICE / HINT

Note


  • First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this problem.

    Click here

  • Inspect fuses for circuits related to this system before performing the following inspection procedure.

  • This check is possible only when the "Power Back Door Function" customization setting using the multi-information display in the combination meter assembly is set to ON (initial setting is ON).

    Click here

  • If the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU has been performed, initialize the power back door system.

    Click here

PROCEDURE


  1. INITIALIZE MULTIPLEX NETWORK DOOR ECU


    1. Perform the initialization for the multiplex network door ECU.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK POWER BACK DOOR SYSTEM


    1. Check that the power back door hazard warning lights operate normally.

      Click here

      OK
      The power back door system operate normally
      Result
      Proceed to
      OK
      NG

    OK

    END (POWER BACK DOOR SYSTEM HAS NOT BEEN INITIALIZED)

    NG

  3. CHECK BACK DOOR CLOSER SYSTEM


    1. Check back door closer system operation.

      Click here

      OK
      Back door closer system operates normally
      Result
      Proceed to
      OK
      NG

    NG

    GO TO BACK DOOR CLOSER SYSTEM Click here

    OK

  4. CHECK COMBINATION METER ASSEMBLY


    1. With the vehicle stopped and hybrid control system started, check the shift position indicator operation and that the speedometer indicates 0 km/h (0 mph).

      OK
      Combination meter operates normally
      Result
      Proceed to
      OK
      NG

    NG

    GO TO METER / GAUGE SYSTEM Click here

    OK

  5. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes
      OK
      DTC is not output
      Result
      Proceed to
      OK
      NG

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - BATTERY AND BODY GROUND)


    1. B002H37C10
      *a

      Rear view of wire harness connector

      (to Multiplex Network Door ECU)

      Disconnect the multiplex network door ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Y26-10 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Y25-20 (ECUB) - Body ground Power switch off 11 to 14 V
      Y26-1 (B) - Body ground Power switch off 11 to 14 V
      Y25-18 (IG) - Body ground Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. READ VALUE USING GTS


    1. Read the Data List according to the display on the GTS.

      Click here


      Body Electrical > Back Door > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      PBD Main SW Power back door ON/OFF signal ON or OFF Current customize setting displayed -

      Body Electrical > Back Door > Data List
      Tester Display
      PBD Main SW
      OK
      On GTS screen, item changes between ON and OFF according to above chart.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO METER / GAUGE SYSTEM Click here

    OK

  8. READ VALUE USING GTS


    1. Read the Data List according to the display on the GTS.

      Click here


      Body Electrical > Back Door > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      PBD Touch Sensor (Right) Power back door sensor assembly RH signal ON, OFF or Open

      ON: Power back door sensor assembly RH pressed

      OFF: Power back door sensor assembly RH not pressed

      Open: Power back door sensor assembly RH circuit open

      		 -
      PBD Touch Sensor (Left) Power back door sensor assembly LH signal ON, OFF or Open

      ON: Power back door sensor assembly LH pressed

      OFF: Power back door sensor assembly LH not pressed

      Open: Power back door sensor assembly LH circuit open

      		 -

      Body Electrical > Back Door > Data List
      Tester Display
      PBD Touch Sensor (Right)
      PBD Touch Sensor (Left)
      Result
      Result Proceed to
      On the GTS screen, ON or OFF is displayed accordingly A
      On the GTS screen, ON or OFF is not displayed accordingly or Open is displayed for power back door sensor assembly RH B
      On the GTS screen, ON or OFF is not displayed accordingly or Open is displayed for power back door sensor assembly LH C

    A

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    C

    INSPECT POWER BACK DOOR SENSOR ASSEMBLY LH Click here

    B

  9. INSPECT POWER BACK DOOR SENSOR ASSEMBLY RH


    1. Remove the power back door sensor assembly RH.

      Click here

    2. Inspect the power back door sensor assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POWER BACK DOOR SENSOR ASSEMBLY RH Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR SENSOR ASSEMBLY RH - MULTIPLEX NETWORK DOOR ECU)


    1. Disconnect the Y8 power back door sensor assembly RH connector.

    2. Disconnect the Y25 multiplex network door ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Y8-1 (OSR) - Y25-6 (OSR) Always Below 1 Ω
      Y8-2 (OSRE) - Y25-24 (OSE) Always Below 1 Ω
      Y8-1 (OSR) or Y25-6 (OSR) - Body ground Always 10 kΩ or higher
      Y8-2 (OSRE) or Y25-24 (OSE) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. INSPECT POWER BACK DOOR SENSOR ASSEMBLY LH


    1. Remove the power back door sensor assembly LH.

      Click here

    2. Inspect the power back door sensor assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POWER BACK DOOR SENSOR ASSEMBLY LH Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR SENSOR ASSEMBLY LH - MULTIPLEX NETWORK DOOR ECU)


    1. Disconnect the Y9 power back door sensor assembly LH connector.

    2. Disconnect the Y25 multiplex network door ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Y9-1 (OSL) - Y25-26 (OSL) Always Below 1 Ω
      Y9-2 (OSLE) - Y25-24 (OSE) Always Below 1 Ω
      Y9-1 (OSL) or Y25-26 (OSL) - Body ground Always 10 kΩ or higher
      Y9-2 (OSLE) or Y25-24 (OSE) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR