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SMART ENTRY AND START SYSTEM(for Entry Function) Rear Door RH Entry Unlock Function does not Operate

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DTC Code DTC Name
  Rear Door RH Entry Unlock Function does not Operate
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DESCRIPTION

If the entry unlock function does not operate for the rear door RH only, but the entry lock function operates, the request code is being transmitted properly from the rear door RH. In this case, there may be a problem related to the touch sensor (connection between the certification ECU (smart key ECU assembly) and rear door outside handle assembly (for rear door RH) [unlock sensor]).

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • The smart entry and start system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (Click here). Troubleshoot the smart entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.

  • When using the GTS with the vehicle power switch off, connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • Check that there are no electrical key transmitter sub-assemblies in the vehicle.

  • Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output (Click here).

  • Before replacing the certification ECU (smart key ECU assembly), refer to the smart entry and start system (for Entry Function) precaution (Click here).

  • After repair, confirm that no DTCs are output by performing the "DTC Output Confirmation Operation".

  • When the entry lock and unlock functions do not operate for doors other than the driver door and if the power switch has not been turned on (IG) for 14 days or more, lock/unlock the doors using the wireless door lock function or key linked unlock operation and then check if the entry door lock and unlock functions operate.

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PROCEDURE


  1. Click here

    CHECK POWER DOOR LOCK CONTROL SYSTEM


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

      OK
      Door locks operate normally.

  2. Click here

    READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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

      Table 1. Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR-Door Lock Pos SW Rear door RH and LH unlock detection switch signal / ON or OFF

      ON: Rear door RH or LH unlocked

      OFF: Rear door RH and LH locked

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

    • OKClick here
    • NG

      GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit) (Click here)

  3. Click here

    READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.

      Table 2. Entry&Start (for LHD)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Pr-Door Touch Sensor Rear door RH touch sensor (unlock sensor) / ON or OFF

      ON: Rear door RH touch sensor (unlock sensor) touched

      OFF: Rear door RH touch sensor (unlock sensor) not touched

      • Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).

      • Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.
      Table 3. Entry&Start (for RHD)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Dr-Door Touch Sensor Rear door LH touch sensor (unlock sensor) / ON or OFF

      ON: Rear door LH touch sensor (unlock sensor) touched

      OFF: Rear door LH touch sensor (unlock sensor) not touched

      • Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).

      • Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.
      OK
      The GTS display changes correctly in response to the operation of the rear door outside handle assembly (for rear door RH).

    • OK

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    • NGClick here
  4. Click here

    CHECK HARNESS AND CONNECTOR (REAR DOOR OUTSIDE HANDLE ASSEMBLY - CERTIFICATION ECU AND BODY GROUND)


    1. Disconnect the N8 rear door outside handle assembly (for rear door RH) connector.

    2. Disconnect the H57 and Q2 certification ECU (smart key ECU assembly) connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N8-4 (SENS) - Q2-13 (SEN4) Always Below 1 Ω
      H57-1 (E) - Body ground Always Below 1 Ω
      N8-4 (SENS) or Q2-13 (SEN4) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    CHECK REAR DOOR OUTSIDE HANDLE ASSEMBLY (FOR REAR DOOR RH) (REAR RH DOOR UNLOCK SENSOR SIGNAL INPUT)


    1. A0008PQE01

      Connect the N8 rear door outside handle assembly (for rear door RH) connector.

      Table 4. Text in Illustration
      *1 Waveform - -
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      		 *b In actuality, sampling is being performed

    2. Connect the H57 and Q2 certification ECU (smart key ECU assembly) connectors.

    3. Using an oscilloscope, check the waveform.

      OK
      Tester Connection Condition Tool Setting Specified Condition
      Q2-13 (SEN4) - H57-1 (E)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. All doors locked

      4. Electrical key transmitter sub-assembly not sufficiently close to vehicle

      5. rear door RH unlock sensor not touched → touched

      		 2 V/DIV., 500 ms/DIV. Pulse generation (See waveform)

    • OK

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    • NG

      REPLACE REAR DOOR OUTSIDE HANDLE ASSEMBLY (FOR REAR DOOR RH) (Click here)