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

DTC Code DTC Name
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

E270969E01

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 hereClick hereClick 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. C278775C01

      *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 hereClick 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 RHClick here

    C

    INSPECT POWER BACK DOOR SENSOR ASSEMBLY LHClick here

    A

  8. READ VALUE USING GTS

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

      Click hereClick 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 SWITCHClick 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