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

DESCRIPTION

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

WIRING DIAGRAM

A003SXWE09

INSPECTION PROCEDURE

Note


  • 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.

  • Confirm that another key is not in the cabin.

PROCEDURE


  1. CHECK CUSTOMIZE SETTING (ENTRY BACK DOOR OPEN FUNCTION)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Customize Setting.

    5. Select the setting by referring to the table below.

      Entry & Start
      Tester Display Default Content Setting
      B-Dr Opening Operation Long Function that opens the back door when the driver has the key and presses the back door opener switch assembly (opener switch) Long, Twice or OFF
      Result
      Result Proceed to
      Customize setting is Long or Twice. A
      Customize setting is OFF. B

    B

    PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) Click here

    A

  2. 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

  3. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Enter the following menus: Body / Main Body / Active Test.

    2. Perform the Active Test according to the display on the intelligent tester.

      Main Body (Main Body ECU (Multiplex Network Body ECU))
      Tester Display Test Part Control Range Diagnostic Note
      Trunk and Back-Door Open Back door lock motor ON or OFF -
      OK
      The back door lock assembly unlatches when ON is selected.

    NG

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

    OK

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


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

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

      Smart Key (Certification ECU (Smart Key ECU Assembly))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Tr/B-Door Unlock SW Back door opener switch assembly (opener switch) / ON or OFF

      ON: Back door opener switch assembly (opener switch) pushed

      OFF: Back door opener switch assembly (opener switch) not pushed

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

    NG

    INSPECT BACK DOOR OPENER SWITCH ASSEMBLY Click here

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  5. INSPECT BACK DOOR OPENER SWITCH ASSEMBLY


    1. A003U8UE06
      Text in Illustration
      *1

      Component without harness connected

      (Back Door Opener Switch Assembly)

      Remove the back door opener switch assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Position Specified Condition
      2 (L) - 3 (B) Back door opener switch assembly (opener switch) not pushed (OFF) 10 kΩ or higher
      2 (L) - 3 (B) Back door opener switch assembly (opener switch) pushed (ON) Below 1 Ω

    NG

    REPLACE BACK DOOR OPENER SWITCH ASSEMBLY Click here

    OK

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


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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E117-7 (TSW5) - R7-3 (B) Always Below 1 Ω
      E117-7 (TSW5) - Body ground Always 10 kΩ or higher
      R7-3 (B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)