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 main switch 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

A01GD9UE01

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.

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

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 power back door system operation.

      Click here

      Result
      Proceed to
      Power back door system operates normally
      Power back door system does not operate

    Power back door system operates normally

    END

    Power back door system does not operate

  3. CHECK BACK DOOR CLOSER SYSTEM


    1. Check back door closer system operation.

      Click here

      Result
      Proceed to
      Back door closer system operates normally
      Back door closer system does not operate

    Back door closer system does not operate

    GO TO BACK DOOR CLOSER SYSTEM Click here

    Back door closer system operates normally

  4. CHECK COMBINATION METER ASSEMBLY


    1. Check shift position indicator operation and that the speedometer indicates 0 km/h (0 mph) when the vehicle is stopped and the engine is idling.

      Result
      Proceed to
      Combination meter operates normally
      Combination meter does not operate

    Combination meter does not operate

    GO TO METER / GAUGE SYSTEM Click here

    Combination meter operates normally

  5. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes
      Result
      Proceed to
      DTC is not output
      DTCs are output

    DTCs are output

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    DTC is not output

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


    1. A01GA55C01
      *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
      U19-7 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      U18-1 (ECUB) - Body ground Always 11 to 14 V
      U19-8 (B) - Body ground Always 11 to 14 V
      U18-7 (IG) - Body ground Ignition switch ON 11 to 14 V
      U18-7 (IG) - Body ground Ignition switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. READ VALUE USING GTS


    1. Check the Data List to determine if the power back door sensor assembly functions properly.

      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

    B

    INSPECT POWER BACK DOOR SENSOR ASSEMBLY RH Click here

    C

    INSPECT POWER BACK DOOR SENSOR ASSEMBLY LH Click here

    A

  8. READ VALUE USING GTS


    1. Check the Data List to determine if the power back door main switch functions properly.

      Click here


      Body Electrical > Back Door > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      PBD Main SW Power back door main switch signal ON or OFF

      ON: Power back door main switch pushed

      OFF: Power back door main switch not pushed

      		 -

      Body Electrical > Back Door > Data List
      Tester Display
      PBD Main SW
      OK
      The power back door main switch functions as specified in the normal condition column.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    NG

    INSPECT POWER BACK DOOR MAIN SWITCH Click here

  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 U10 power back door sensor assembly RH connector.

    2. Disconnect the U18 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
      U10-1 (OSR) - U18-16 (OSR) Always Below 1 Ω
      U10-2 (OSRE) - U18-17 (OSE) Always Below 1 Ω
      U10-1 (OSR) or U18-16 (OSR) - Body ground Always 10 kΩ or higher
      U10-2 (OSRE) or U18-17 (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 MAIN SWITCH


    1. Remove the power back door main switch.

      Click here

    2. Inspect the power back door main switch.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POWER BACK DOOR MAIN SWITCH Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR MAIN SWITCH - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)


    1. Disconnect the G72 power back door main switch connector.

    2. Disconnect the U18 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
      G72-9 (UL) - U18-20 (MSW) Always Below 1 Ω
      G72-6 (E) - Body ground Always Below 1 Ω
      G72-9 (UL) or U18-20 (MSW) - 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

  13. 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

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


    1. Disconnect the U11 power back door sensor assembly LH connector.

    2. Disconnect the U18 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
      U11-1 (OSL) - U18-18 (OSL) Always Below 1 Ω
      U11-2 (OSLE) - U18-17 (OSE) Always Below 1 Ω
      U11-1 (OSL) or U18-18 (OSL) - Body ground Always 10 kΩ or higher
      U11-2 (OSLE) or U18-17 (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