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, 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 or 7) back door motor unit (power back door ECU).

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   INITIALIZE POWER BACK DOOR ECU

   
   

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

   
   
   • NEXTClick here
2. Click here

   CHECK POWER BACK DOOR SYSTEM

   
   

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

      OK
      Power back door system operates normally.

   
   
   • OKClick here
   • NGClick here
3. Click here

   CHECK BACK DOOR CLOSER SYSTEM

   
   

   1. Check back door closer system operation (Click here).

      OK
      Back door closer system operates normally.

   
   
   • OKClick here
   • NGClick here
4. Click here

   CHECK COMBINATION METER

   
   

   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.

   
   
   • OKClick here
   • NGClick here
5. Click here

   CHECK DTC OUTPUT

   
   

   1. Check for the 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

   
   
   • AClick here
   • BClick here
   • CClick here
   • DClick here
   • EClick here
6. Click here

   READ VALUE USING INTELLIGENT TESTER (BACK DOOR LOCK ASSEMBLY)

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the tester on.

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

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

      Table 1. Main Body (Main Body ECU)

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Back Door Open	Back door lock / Permit or Prohibt	Permit: Back door unlocked Prohibt: Back door locked	-

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

   
   
   • OKClick here
   • NGClick here
7. Click here

   READ VALUE USING INTELLIGENT TESTER (BACK DOOR LOCK ASSEMBLY)

   
   

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

   2. Check the Data List to determine if the back door lock assembly is functioning properly.

      Table 2. 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.

   
   
   • OKClick here
   • NGClick here
8. Click here

   READ VALUE USING INTELLIGENT TESTER (POWER BACK DOOR TOUCH SENSOR)

   
   

   1. Check the Data List to determine if the power back door touch sensor function properly.

      Table 3. 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 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 open	-

      OK
      The power back door touch sensor functions as specified in the normal condition column.

   
   
   • OKClick here
   • NGClick here
9. Click here

   READ VALUE USING INTELLIGENT TESTER (POWER BACK DOOR MAIN SWITCH)

   
   

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

      Table 4. 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 not pushed OFF: Power back door main switch pushed	-

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

   
   
   • OKClick here
   • NGClick here
10. Click here

    INSPECT POWER BACK DOOR MAIN SWITCH

    
    
    1. 

       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 Switch Condition Specified Condition 6 (E) - 9 (UL) Free Below 1 Ω 6 (E) - 9 (UL) Pushed 10 kΩ or higher

    
    
    • OKClick here
    • NGClick here
11. Click here

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

    
    
    1. 

       Disconnect the N18 ECU connector.

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

       Standard Resistance
       Tester Connection Condition Specified Condition G35-9 (UL) - N18-17 (MSW) Always Below 1 Ω G35-6 (E) - Body ground Always Below 1 Ω G35-9 (UL) - Body ground Always 10 kΩ or higher

    
    
    • OKClick here
    • NGClick here
12. Click here

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

13. Click here

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

14. Click here

    END

15. Click here

    GO TO BACK DOOR CLOSER SYSTEMClick here

16. Click here

    GO TO METER / GAUGE SYSTEMClick here

17. Click here

    GO TO OTHER FLOW CHART (B2222)Click here

18. Click here

    REPLACE MAIN BODY ECUClick here

19. Click here

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

20. Click here

    REPLACE POWER BACK DOOR MAIN SWITCHClick here

21. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

22. Click here

    GO TO OTHER FLOW CHART (B2225)Click here

23. Click here

    GO TO OTHER FLOW CHART (B2250)Click here

24. Click here

    GO TO OTHER FLOW CHART (B2251)Click here