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ENTRY AND START SYSTEM (for Entry Function) > Back Door Entry Lock Function does not Operate

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DESCRIPTION

If the back door entry lock function does not operate but the back door open function operates, the communication between the vehicle and key is normal. As a faulty part, the entry lock switch circuit (from the back door opener switch assembly (lock switch) to the certification ECU (smart key ECU assembly)) is suspected.

WIRING DIAGRAM


B219120E07


INSPECTION PROCEDURE

NOTICE:
  1. The entry and start system (for entry function) uses a LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (Click here). Troubleshoot the entry and start system (for entry function) after confirming that the communication system is functioning properly.
  2. Confirm that another key is not in the cabin.

1.CHECK POWER DOOR LOCK OPERATION

  1. When the door control switch on the master switch assembly is operated, check that the doors unlock and lock according to switch operation (Click here).

    OK:
    Door locks operate normally.



NG
GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) (Click here)
OK


2.READ VALUE USING INTELLIGENT TESTER (BACK DOOR OPENER SWITCH)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body / Entry & Start / Data List.

  1. Read the Data List according to the display on the intelligent tester.

    Entry & Start (Certification ECU (Smart Key ECU Assembly)) 
    Tester Display
    		Measurement Item/Display
    		Normal Condition
    		Diagnostic Note
    Tr/B-Door Lock SW
    		Back door opener switch assembly (lock switch) / ON or OFF
    		ON: Back door opener switch assembly (lock switch) pushed
    OFF: Back door opener switch assembly (lock switch) not pushed
    		-

    OK:
    On the intelligent tester screen, the display changes between ON and OFF as shown in the chart above.



NG
Go to step 3
OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

3.INSPECT BACK DOOR OPENER SWITCH ASSEMBLY


    B203525E01

  1. Remove the back door opener switch assembly (Click here).

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

    Standard Resistance:
    Tester Connection
    		Switch Position
    		Specified Condition
    1 (L) - 2 (E)
    		Back door opener switch assembly (lock switch) not pushed (OFF)
    		10 kΩ or higher
    1 (L) - 2 (E)
    		Back door opener switch assembly (lock switch) pushed (ON)
    		Below 1 Ω

    Text in Illustration 
    *1
    		Component without harness connected
    (Back Door Opener Switch Assembly)



NG
REPLACE BACK DOOR OPENER SWITCH ASSEMBLY (Click here)
OK


4.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BACK DOOR OPENER SWITCH)


    B203526E06

  1. Disconnect the certification ECU (smart key ECU assembly) connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L62-23 (TSW6) - V4-1 (L)
    		Always
    		Below 1 Ω
    L62-23 (TSW6) - Body ground
    		Always
    		10 kΩ or higher
    V4-1 (L) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Certification ECU (Smart Key ECU Assembly))
    *2
    		Front view of wire harness connector
    (to Back Door Opener Switch Assembly)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)