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 signals to the turn signal flasher relay (hazard warning lights).

WIRING DIAGRAM

A0119E6E04

INSPECTION PROCEDURE

Note


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

  • When replacing or inspecting the door control receiver and wire harness, do not change the position or length of the wire harness. If the wire harness is too close to the door control receiver, wireless function performance may be affected.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the door control switch on the power window regulator master switch assembly 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. 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 map light assembly flash pattern.


    NEXT

  4. 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 map light assembly.

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

    B

    REGISTER RECOGNITION CODE Click here

    C

    CHECK DOOR CONTROL RECEIVER (RESPONSE) Click here

    A

    REPLACE MAIN BODY ECU Click here

  5. 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 TRANSMITTER MODULE Click here

    OK

    END (GO TO OPERATION CHECK) Click here

  6. CHECK 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
      Mismatched recognition code is output.

    NG

    CHECK WAVE ENVIRONMENT Click here

    OK

  7. INSPECT TRANSMITTER BATTERY (VOLTAGE)


    1. Remove the transmitter 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. A01174FE05
      Text in Illustration
      *a Lead Wire

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

      CAUTION:

      When replacing the transmitter battery, before starting work, remove any static electricity that has built up by touching, for example, the vehicle to prevent the door control transmitter module set from being damaged.

    3. A011A2IE02
      Text in Illustration
      *a GND

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

      Tech Tips

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Battery positive (+) - Battery negative (-) Ignition switch off, all doors closed and lock or unlock switch pushed 2.5 to 3.2 V

    NG

    REPLACE TRANSMITTER BATTERY Click here

    OK

    REPLACE DOOR CONTROL TRANSMITTER MODULE Click here

  8. REPLACE TRANSMITTER BATTERY


    1. Replace the transmitter battery Click here.


    NEXT

  9. 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 map light assembly.

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

    B

    REPLACE DOOR CONTROL TRANSMITTER MODULE Click here

    A

    END (TRANSMITTER BATTERY WAS DEFECTIVE)

  10. 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

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

    OK

    AFFECTED BY WAVE INTERFERENCE

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


    1. A0117JKE29
      Text in Illustration
      *a

      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
      G31-1 (GND) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Condition Specified Condition
      G31-5 (+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)

    A0119XIE10
    Text in Illustration
    *a

    Component with harness connected

    (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 Ignition switch off, all doors closed and door control transmitter switch not pressed 11 to 14 V
      Ignition switch off, all doors closed and transmitter switch pressed Pulse generation

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

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


    1. 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 Click here

    OK

    END (DOOR CONTROL RECEIVER WAS DEFECTIVE)