REAR SUNSHADE SYSTEM Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position

DESCRIPTION

When the engine switch is on (IG) and the shift lever is moved to R, the shift position sensors send a reverse signal to the ECM. Then, the ECM sends this signal to the main body ECU (multiplex network body ECU) via CAN communication. When the rear sunshade relay receives this signal with the rear sunshade raised, the rear sunshade is lowered.

WIRING DIAGRAM

B003U6HE25
*a REV
*b Main Body ECU (Multiplex Network Body ECU)
*c Rear Sunshade Relay
*d CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • The rear sunshade system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting procedure.

    Click here

  • The shift-linked operation of the rear sunshade system operates only when the customize setting "R-pos to Rear Sun Shade COM" is set to "ON".

    Click here

  • If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

PROCEDURE


  1. READ VALUE USING GTS (SHIFT SW STATUS (R RANGE))


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List.

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


      Powertrain > Engine > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Shift SW Status (R Range) PNP switch status ON or OFF

      ON: Shift lever in R

      OFF: Shift lever not in R

      		 When the shift lever position displayed on the GTS differs from the actual position, adjustment of the PNP switch or the shift cable may be incorrect.

      Powertrain > Engine > Data List
      Tester Display
      Shift SW Status (R Range)
      OK
      The GTS display changes according to the shift position selected by using the shift lever.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO SFI SYSTEM for 2GR-FSE: Click here
    GO TO SFI SYSTEM for 8AR-FTS (w/ Canister Pump Module): Click here
    GO TO SFI SYSTEM for 8AR-FTS (w/o Canister Pump Module): Click here

    OK

  2. PERFORM ACTIVE TEST USING GTS (REVERSE GEAR SIGNAL)


    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 / Main Body / Active Test.

    5. Perform the Active Test according to the display on the GTS.

      Tech Tips

      Make sure that the rear window shade assembly is raised before performing the Active Test.


      Body Electrical > Main Body > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Reverse Gear Signal Reverse signal OFF/ON -

      Body Electrical > Main Body > Active Test
      Tester Display
      Reverse Gear Signal
      OK
      The rear window shade assembly is lowered.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (REVERSE SIGNAL)


    1. Disconnect the Q39 rear sunshade relay connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      Q39-3 (REV) - Body ground Engine switch on (IG), shift lever in any position other than R → R 11 to 14 V → Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR SUNSHADE RELAY Click here

    NG

  4. CHECK HARNESS AND CONNECTOR (REAR SUNSHADE RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. Disconnect the K1 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K1-16 (REV) - Q39-3 (REV) Always Below 1 Ω
      K1-16 (REV) - Body ground Always 10 kΩ or higher
      Q39-3 (REV) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR