ENTRY AND START SYSTEM (for Entry Function) Front Passenger Side Door Entry Unlock Function does not Operate

DESCRIPTION

If the front passenger door entry lock function operates normally, but its entry unlock function does not, this means that the request code from the front passenger door is being output normally. In this case, a malfunction in the touch sensor circuit (from the certification ECU (smart key ECU assembly) to the front door outside handle assembly (touch sensor)) is suspected.

WIRING DIAGRAM

A019OC7E10

INSPECTION PROCEDURE

Note


  • The entry and start system (for entry function) uses a multiplex communication system (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 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
    OK
  2. 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 (Main Body ECU (Multiplex Network Body ECU))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Lock Pos*1 Front right side lock position switch signal/LOCK or UNLOCK

      LOCK: Front right side door locked

      UNLOCK: Front right side door unlocked

      -
      FL Door Lock Pos*2 Front left side door lock position switch signal/LOCK or UNLOCK

      LOCK: Front left side door locked

      UNLOCK: Front left side door unlocked

      -

      • *1: for LHD

      • *2: for RHD

      OK
      On the intelligent tester screen, the display changes between LOCK and UNLOCK as shown in the chart above.

    NG
    OK
  3. READ VALUE USING INTELLIGENT TESTER (DOOR OUTSIDE HANDLE)


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

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

      Entry & Start (Certification ECU (Smart Key ECU Assembly))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P-Door Touch Sensor Status of touch sensor (for front passenger side) / ON or OFF

      ON: Touch sensor touched

      OFF: Touch sensor not touched

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

    NG
    OK
  4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE)


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

    2. A019KQRE20
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      *2

      Front view of wire harness connector

      (to Front Door Outside Handle Assembly (for Front Passenger Side))

      *3 for LHD
      *4 for RHD

      Disconnect the front door outside handle assembly (for front passenger side) connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      F58-21 (SEN2) - M1-4 (SENS) Always Below 1 Ω
      F58-21 (SEN2) - Body ground Always 10 kΩ or higher
      M1-4 (SENS) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      F58-21 (SEN2) - N1-4 (SENS) Always Below 1 Ω
      F58-21 (SEN2) - Body ground Always 10 kΩ or higher
      N1-4 (SENS) - Body ground Always 10 kΩ or higher

    NG
    OK
  5. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (TOUCH SENSOR SIGNAL INPUT)


    1. Reconnect the certification ECU (smart key ECU assembly) connector.

    2. Reconnect the front door outside handle assembly (for front passenger side) connector.

      A019PMDE01
    3. Measure the voltage and for pulses according to the value(s) in the table below.

      Standard
      Tester Connection Condition Specified Condition
      F58-21 (SEN2) - F58-15 (E)
      • Engine switch off

      • All door closed

      • Key not in detection area

      • Touch sensor (for front passenger side) not touched

      Pulse generation
      F58-21 (SEN2) - F58-15 (E)
      • Engine switch off

      • All door closed

      • Key not in detection area

      • Touch sensor (for front passenger side) touched

      Below 2 V
      Text in Illustration
      *1

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      *2 for LHD
      *3 for RHD - -

    NG
    OK