POWER BACK DOOR SYSTEM Power Back Door cannot be Operated Using Emblem Sensor

DESCRIPTION

Signals from the rear emblem sensor assembly are sent to the multiplex network door ECU. If the power back door system does not operate, there may be a malfunction in the rear emblem sensor assembly circuit.

WIRING DIAGRAM

B007XK6E14
*a EMSR
*b EMST
*c Multiplex Network Door ECU
*d Rear Emblem Sensor Assembly

CAUTION / NOTICE / HINT

Note


  • Before troubleshooting, make sure that the "PBD/Emblem Sensor Function" customize setting is set to "PBD ON/Emblem ON".

    Click here

  • Before troubleshooting, be sure to read Precautions for Touchless Power Back Door.

    Click here

  • If the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors has been disconnected, initialize the power back door system.

PROCEDURE


  1. CHECK POWER BACK DOOR SYSTEM


    1. Check the power back door system operation.

      Click here

      Result
      Result Proceed to
      The power back door does not operate using the rear emblem sensor assembly. A
      The power back door does not operate using any switches or the rear emblem sensor assembly. B

    B

    GO TO OTHER DIAGNOSTIC PROCEDURE (Power Back Door cannot be Operated Using Any Switch) Click here

    A

  2. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Back Door > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Emblem Sensor Detection Rear emblem sensor assembly detection status OFF or ON

      OFF: Rear emblem sensor assembly not detecting a hand

      ON: Rear emblem sensor assembly detecting a hand

      		 -

      Body Electrical > Back Door > Data List
      Tester Display
      Emblem Sensor Detection
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (BACK DOOR CONTROL SWITCH - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND)


    1. Disconnect the a1 rear emblem sensor assembly connector.

    2. Disconnect the Z16 multiplex network door ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Z16-33 (EMSR) - a1-2 (EMST) Always Below 1 Ω
      Z16-32 (EMST) - a1-4 (EMSR) Always Below 1 Ω
      Z16-33 (EMSR) or a1-2 (EMST) - Body ground Always 10 kΩ or higher
      Z16-32 (EMST) or a1-4 (EMSR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE REAR EMBLEM SENSOR ASSEMBLY


    1. Temporarily replace the rear emblem sensor assembly with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK POWER BACK DOOR SYSTEM


    1. Check the power back door system operation.

      Click here

      OK
      Power back door system operates normally
      Result
      Proceed to
      OK
      NG

    OK

    END (REAR EMBLEM SENSOR ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here