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

DESCRIPTION

If the back door entry lock function does not operate but the back door open function operates, the communication line between the vehicle and electrical key transmitter is normal. The part at fault may be the entry lock switch circuit (certification ECU (smart key ECU assembly) → back door opener switch).

WIRING DIAGRAM

A01ENWZE01
A01EQ5GE03

INSPECTION PROCEDURE

Note

Before performing the inspection, check that there are no problems related to the "CAN Communication System" and "LIN Communication System".

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the door control switch of the master switch assembly is operated, check that the locked doors unlock.

      OK
      Door locks operate normally.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. CHECK VEHICLE EQUIPMENT


    1. Check if the power back door is equipped on the vehicle.

      Result
      Result Proceed to
      w/ Power Back Door System A
      w/o Power Back Door System B

    B

    READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH) Click here

    A

  3. CHECK POWER BACK DOOR OPERATION


    1. When the power back door switch is operated, check that the power back door closes.

      OK
      Power back door is closes.
      Result
      Result Proceed to
      NG A
      OK B

    B

    READ VALUE USING INTELLIGENT TESTER (BACK DOOR LOCK SWITCH) Click here

    A

    GO TO POWER BACK DOOR SYSTEM Click here

  4. READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

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

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

      Main Body
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      Back Lock Pos switch Back door lock position switch signal / ON or OFF

      ON: Back door unlocked

      OFF: Back door locked

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

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Back Door LOCK/UNLOCK Functions do not Operate) Click here

    OK

  5. READ VALUE USING INTELLIGENT TESTER (BACK DOOR LOCK SWITCH)


    1. Using the intelligent tester, read the Data List.

      Entry&Start
      Tester Display Measurement Item/Display Normal Condition Diagnostic Note
      Tr/B-Door Lock SW Back door lock switch / ON or OFF

      ON: Back door lock switch pushed

      OFF: Back door lock switch not pushed

      		 -
      OK
      "ON" (switch is pushed) and "OFF" (switch is not pushed) appears on the screen.

    NG

    CHECK BACK DOOR OPENER SWITCH Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  6. CHECK BACK DOOR OPENER SWITCH


    1. A01ES3FE03

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 (UL) - 2 (L) Lock switch pushed Below 1 Ω
      1 (UL) - 2 (L) Lock switch not pushed 10 kΩ or higher

    NG

    REPLACE BACK DOOR OPENER SWITCH Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - BACK DOOR OPENER SWITCH)


    1. A01EO7OE03

      Disconnect the E29 ECU connector.

    2. Disconnect the S7 switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E29-7 (TSW5) - S7-1 (UL) Always Below 1 Ω
      E29-7 (TSW5) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)