WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Entry and Start System) Only Wireless Control Function is Inoperative

DESCRIPTION

The door control receiver receives signals from the transmitter and sends these signals to the main body ECU. The main body ECU then controls all doors by sending lock/unlock signals to each door, and sends hazard flasher relay signals to the turn signal flasher relay (hazard warning lights).

WIRING DIAGRAM

A0119IZE10

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the door control switch on the master switch is operated, check that the locked doors unlock Click here.

      OK
      Locked doors unlock.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. CHECK KEY REMINDER WARNING SYSTEM


    1. Check that the key reminder warning buzzer operates normally Click here.

      OK
      Key reminder warning buzzer operates normally.

    NG

    GO TO KEY REMINDER WARNING SYSTEM Click here

    OK

  3. CHECK DOOR CONTROL TRANSMITTER MODULE


    1. When another registered door control transmitter is used, check that the wireless door lock function operates normally.

      OK
      Wireless door control functions operate normally.

    NG

    CHECK WAVE ENVIRONMENT Click here

    OK

  4. CHECK TRANSMITTER LED ILLUMINATION


    1. Check that the transmitter's LED illuminates 3 times when the switch is pressed 3 times.

      Result
      Result Proceed to
      Transmitter's LED does not illuminate 3 times when switch is pressed 3 times A
      Transmitter's LED illuminates 3 times when switch is pressed 3 times B
      The transmitter's LED does not illuminate the second or third time C

      Tech Tips

      If the transmitter's LED does not illuminate the second or third time, replace the transmitter battery, which is probably depleted.


    B

    REPLACE DOOR CONTROL TRANSMITTER MODULE Click here

    C

    REPLACE TRANSMITTER BATTERY Click here

    A

  5. INSPECT TRANSMITTER BATTERY (VOLTAGE)

    A01193YE01

    1. A0119QLE02

      Remove the battery from the door control transmitter module that does not operate. Attach a lead wire (0.6 mm (0.0236 in.)) or less in diameter including wire sheath) with tape or equivalent to the negative terminal Click here.

      Note

      Do not wrap the lead wire around the terminal, wedge it between terminals, or solder it. The terminal may be deformed or damaged, and the battery will not be able to be installed correctly.

    2. Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.

    3. Using an oscilloscope, check the transmitter battery voltage waveform.

      Tech Tips

      When measuring the battery voltage, press one of the transmitter switches.

      Standard Voltage
      Item Content
      Tester Connection Battery positive (+) - Battery negative (-)
      Tool Setting 0.5 V/DIV., 100 ms/DIV.
      Condition Press one of the transmitter switches
      Specified Condition 2.2 to 3.2 V (Refer to the waveform)

    NG

    REPLACE TRANSMITTER BATTERY Click here

    OK

    REPLACE DOOR CONTROL TRANSMITTER MODULE Click here

  6. CHECK WAVE ENVIRONMENT


    1. Bring the transmitter near the door control receiver, and perform a wireless operation check.

      OK
      Wireless functions operate normally.

      Tech Tips


      • When the transmitter is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the inspection result is that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.


    NG

    AFFECTED BY WAVE INTERFERENCE

    OK

  7. SWITCH TO SELF DIAGNOSTIC MODE


    1. Switch to self-diagnostic mode by operating the ignition key cylinder.


      1. Make sure that the vehicle is in its initial condition. Then insert the key into the ignition key cylinder and remove it.

      2. Within 5 seconds of removing the key, insert the key into the ignition key cylinder (ignition switch off). Then turn the ignition switch to ON and off.

      3. Within 30 seconds of turning the ignition switch off, perform the following operation 9 times: turn the ignition switch to ON and off.

        Note

        If the system cannot enter self-diagnostic mode, the system returns to normal mode.

        Tech Tips


        • Turning the ignition switch to ON after the above operations have been completed ends self-diagnostic mode.

        • Do not lock or unlock doors during self-diagnostic mode.

    2. A0118D5E20

      Check that the system has switched to self-diagnostic mode by checking the No. 1 room light assembly flash pattern.

      OK
      Flash pattern is same as illustration on left.

    NEXT

  8. CHECK BY SELF DIAGNOSTIC MODE


    1. Inspect the diagnosis outputs when the door control transmitter switch is held down. The diagnosis outputs can be checked by the flash patterns of the No. 1 room light assembly.

      A01172NE03
      Result
      Result Proceed to
      Normal waves (light flash patterns) for LOCK and UNLOCK switches are output A
      Unmatching recognition code is output B
      No diagnosis outputs C

    B

    REGISTER RECOGNITION CODE Click here

    C

    CHECK RESPONSE OF DOOR CONTROL RECEIVER (RESPONSE) Click here

    A

    REPLACE MAIN BODY ECU

  9. REGISTER RECOGNITION CODE


    1. Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered.

      OK
      Recognition code can be registered.

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

    END

  10. CHECK RESPONSE OF DOOR CONTROL RECEIVER (RESPONSE)


    1. Prepare the door control transmitter from another vehicle.

    2. Press and hold down the door control transmitter switch.

    3. Check that an unmatching recognition code is output.

      OK
      Unmatching recognition code is output.

    NG

    INSPECT DOOR CONTROL RECEIVER (POWER SOURCE, GROUND) Click here

    OK

    REPLACE DOOR CONTROL TRANSMITTER MODULE Click here

  11. INSPECT DOOR CONTROL RECEIVER (POWER SOURCE, GROUND)


    1. A0117JKE06
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Door Control Receiver)

      Disconnect the door control receiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (GND) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Condition Specified Condition
      5 (+B) - Body ground Always 11 to 14 V

    3. Reconnect the door control receiver connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT DOOR CONTROL RECEIVER (OUTPUT)

    A01180DE10
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Door Control Receiver)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G31-2 (RDA) - Body ground Transmitter switch off → on (No key in ignition key cylinder, all doors closed) 6 V or higher → Below 1 V → 6 V or higher

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - DOOR CONTROL RECEIVER)


    1. A0118PME01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Door Control Receiver)
      *2

      Front view of wire harness connector

      (to Main Body ECU)

      Disconnect the D42 main body ECU connector.

    2. Disconnect the G31 door control receiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D42-26 (RDA) - G31-2 (RDA) Always Below 1 Ω
      D42-26 (RDA) or G31-2 (RDA) - Body ground Always 10 kΩ or higher
      D42-25 (PRG) - G31-3 (PRG) Always Below 1 Ω
      D42-25 (PRG) or G31-3 (PRG) - Body ground Always 10 kΩ or higher

    4. Reconnect the main body ECU connector and door control receiver connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. REPLACE DOOR CONTROL RECEIVER


    1. Temporarily replace the door control receiver with a new or normally functioning one Click here.


    NEXT

  15. REGISTER RECOGNITION CODE


    1. Perform the Registration procedures Click here.


    NEXT

  16. CHECK DOOR CONTROL RECEIVER (OPERATION)


    1. Check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.

      OK
      Doors can be locked and unlocked with transmitter.

    NG

    REPLACE MAIN BODY ECU

    OK

    END (DOOR CONTROL RECEIVER IS DEFECTIVE)