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 power back door ECU (power back door motor unit), 2) power back door touch sensor circuit, 3) power back door main switch circuit, 4) back door closer system, 5) meter/gauge system, 6) main body ECU (driver side junction block assembly) or 7) power back door ECU (power back door motor unit).

WIRING DIAGRAM

A01EJXDE09

INSPECTION PROCEDURE

PROCEDURE


  1. INITIALIZE POWER BACK DOOR ECU


    1. Perform the initialization for the power back door ECU (power back door motor unit) Click here.


    NEXT

  2. CHECK POWER BACK DOOR SYSTEM


    1. Check the power back door system operation Click here.

      OK
      Power back door system operates normally.

    NG

    CHECK BACK DOOR CLOSER SYSTEM Click here

    OK

    END

  3. CHECK BACK DOOR CLOSER SYSTEM


    1. Check back door closer system operation Click here.

      OK
      Back door closer system operates normally.

    NG

    GO TO BACK DOOR CLOSER SYSTEM Click here

    OK

  4. CHECK COMBINATION METER ASSEMBLY


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

      OK
      Combination meter operates normally.

    NG

    GO TO METER/GAUGE SYSTEM Click here

    OK

  5. CHECK DTC OUTPUT


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      B2222 is output B
      B2225 is output C
      B2250 is output D
      B2251 is output E

    B

    GO TO OTHER FLOW CHART (B2222) Click here

    C

    GO TO OTHER FLOW CHART (B2225) Click here

    D

    GO TO OTHER FLOW CHART (B2250) Click here

    E

    GO TO OTHER FLOW CHART (B2251) Click here

    A

  6. READ VALUE USING GTS (BACK DOOR LOCK ASSEMBLY)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch to on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Check the Data List to determine if the back door lock assembly functions properly.

      Main Body (Main Body ECU (Driver Side Junction Block Assembly))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Back Door Open Back door lock / Permit or Prohibit

      Permit: Back door unlocked

      Prohibit: Back door locked

      		 -
      OK
      The back door functions as specified in the normal condition column.

    NG

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here

    OK

  7. READ VALUE USING GTS (BACK DOOR LOCK ASSEMBLY)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch to on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Back Door / Data List.

    5. Check the Data List to determine if the back door lock assembly functions properly.

      Back Door (Power Back Door ECU)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Door Lock Status Back door lock condition signal / LOCK or UNLOCK

      LOCK: Back door locked

      UNLOCK: Back door unlocked

      		 -
      OK
      The back door functions as specified in the normal condition column.

    NG

    REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) Click here

    OK

  8. READ VALUE USING GTS (POWER BACK DOOR TOUCH SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch to on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Back Door / Data List.

    5. Check the Data List to determine if the power back door touch sensor functions properly.

      Back Door (Power Back Door ECU)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      PBD Touch Sensor (Left) Power back door touch sensor LH signal / ON , OFF or Open

      ON: Power back door touch sensor LH pressed

      OFF: Power back door touch sensor LH not pressed

      Open: Power back door touch sensor LH circuit open

      		 -
      PBD Touch Sensor (Right) Power back door touch sensor RH signal / ON , OFF or Open

      ON: Power back door touch sensor RH pressed

      OFF: Power back door touch sensor RH not pressed

      Open: Power back door touch sensor RH circuit open

      		 -
      Result
      Result Proceed to
      On the GTS screen, ON or OFF will be displayed accordingly. A
      On the GTS screen, ON or OFF will not be displayed accordingly or Open is displayed. B

    B

    GO TO OTHER FLOW CHART (TOUCH SENSOR CIRCUIT) Click here

    A

  9. READ VALUE USING GTS (POWER BACK DOOR MAIN SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch to on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Back Door / Data List.

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

      Back Door (Power Back Door ECU)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      PBD Main SW Power back door main switch / ON or OFF

      ON: Power back door main switch on

      OFF: Power back door main switch off

      		 -
      OK
      The power back door main switch functions as specified in the normal condition column.

    NG

    INSPECT POWER BACK DOOR MAIN SWITCH Click here

    OK

    REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) Click here

  10. INSPECT POWER BACK DOOR MAIN SWITCH


    1. A01EMA9E04

      Remove the power back door main switch Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (E) - 9 (UL) Free (off) Below 1 Ω
      6 (E) - 9 (UL) Pushed (on) 10 kΩ or higher

    NG

    REPLACE POWER BACK DOOR MAIN SWITCH Click here

    OK

  11. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR MAIN SWITCH - POWER BACK DOOR ECU)


    1. A01ELHEE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Back Door Main Switch)
      *2

      Front view of wire harness connector

      (to Power Back Door ECU)

      Disconnect the D45 power back door main switch connector and L20 power back door ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D45-9 (UL) - L20-17 (MSW) Always Below 1 Ω
      D45-6 (E) - Body ground Always Below 1 Ω
      D45-9 (UL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) Click here