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Wireless Door Lock Control System: Inspection

  1. INSPECT WIRELESS DOOR LOCK DIAGNOSIS MODE 
    1. Start up diagnosis mode.
      NOTE: Follow the method below.
      1. Insert the ignition key into the ignition key cylinder.
      2. Remove the ignition key from the ignition key cylinder.
      3. Insert the key into the ignition switch.
      4. Turn the ignition switch ON once within 5 sec.
      5. Repeat turning the ignition switch OFF --> ON 9 times within 30 sec.
      6. Enter the diagnosis mode, and make sure that the buzzer sounds.
      Fig 1: Identifying Buzzer Sound Pattern With Or Without Key Insert
      G02818555Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Finishing the Diagnosis Mode.

      During the Diagnosis mode, turn the ignition switch OFF --> ON to go back to the normal mode.

      At this time, make sure that the buzzer sounds.

    3. Diagnosis Mode Check
      Fig 2: Identifying Buzzer Sound Pattern When Pressing Each Transmitter Switch
      G02818556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Check how the buzzer sounds when pressing each transmitter switch.
      1. LOCK switch
      2. UNLOCK switch
      3. Luggage door switch
      4. Disagreement of recognition code or rolling code
        NOTE: If (4) is detected in the Diagnosis Check, conduct the recognition code registration.
      5. No response from the buzzer
    NOTE: Conduct the following checks.
    • Check the wireless door lock transmitter.
    • Check the wireless door lock receiver.
  2. INSPECT WIRELESS DOOR LOCK TRANSMITTER OPERATION 
    NOTE: Refer to REPLACEMENT .
    1. Using a screwdriver, pry out the cover.
    2. Remove the battery (lithium battery).
    3. Install a new or normal battery (lithium battery).
      Fig 3: Inspecting Wireless Door Lock Transmitter Operation
      G02818557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: When a new or normal battery cannot be obtained, connect 2 new 1.5 V batteries in series, connect the battery positive (+) to the battery receptacle side terminal and battery negative (-) to the bottom terminal, then apply 3 V to the transmitter.
    4. In the location where is approx. 1 m (3.28 ft) away from driver's outside handle in the right direction, face the transmitter to the vehicle, and check the transmitter operation when pressing a transmission switch on the transmitter.

      Standard: 

      Remote control of vehicle door lock can be operated. 

      NOTE:
      • The operation distance changes according to how customers hold the transmitter or where it is used.
      • Because of using the very weak radio wave, if there is a strong wave or noise on the frequency being used, the operation distance may become shorter.
    5. Install the battery (lithium battery). 
    6. Install the cover securely.
  3. CHECK BATTERY CAPACITY 
    NOTE:
    • Make sure to use the TOYOTA electrical tester.
    • With the battery unloaded at the test, judge cannot be made whether the battery is available or not.
    • When the transmitter is faulty, the energy amount left in the battery might not be checked correctly.
    • On the lithium battery used for the transmitter, the voltage more than 2.5 V with the battery unloaded is shown on the tester until the energy is completely consumed.

      Accordingly when inspecting the energy amount left in the battery, it is necessary to measure the voltage when the battery is loaded (1.2 kΩ).

    1. Using a screwdriver, pry out the cover.
    2. Remove the battery (lithium battery).
      Fig 4: Removing Battery (Lithium Battery)
      G02818558Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the lead to the negative (-) terminal of the transmitter and install the battery.
    4. Connect the tester positive (+) probe to the battery (lithium battery) positive (+) terminal, and tester negative (-) probe to the lead respectively.
    5. Press one of the transmission switches on the transmitter for approx. 1 second.
    6. Press the transmission switch on the transmitter again to measure the voltage.
      Fig 5: Pressing Transmission Switch On Transmitter To Measure Voltage
      G02818559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 2.1 V or more 

      NOTE:
      • When the temperature of the battery is low, the judge cannot be made correctly.

        When the outcome of the test is less than 2.1 V, conduct the test again after leaving the battery in a place at 18°C (64°F) for more than 30 minutes.

      • By auto power off function, the voltage becomes no load voltage (more than 2.5 V) condition 0.8 seconds after the switch was pressed.

        Make sure to read the voltage before it.

      • High voltage might be shown once or twice after leaving the battery, judge should be made with the voltage shown at the 3rd time or later.
    7. Disconnect the lead.
    8. Set the battery (lithium battery) in the transmitter.
    9. Install the cover securely.
  4. INSPECT WIRELESS DOOR LOCK CONTROL CANCEL SWITCH 
    Fig 6: Identifying Wireless Door Lock Control Cancel Switch & Connector Terminal View
    G02818560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WIRELESS DOOR LOCK CONTROL CANCEL SWITCH INSPECTION REFERENCE

    Switch Position Tester Connection Specified Condition
    OFF - No Continuity
    ON 1 - 2 Continuity

    If continuity is not as specified, replace the switch.

    If continuity is as specified, inspect the switch circuit.

  5. INSPECT WIRELESS DOOR LOCK CONTROL CANCEL SWITCH CIRCUIT (See  WIRELESS DOOR LOCK BUZZER CIRCUIT  ) 
  6. INSPECT WIRELESS DOOR LOCK BUZZER OPERATION 
    Fig 7: Inspecting Wireless Door Lock Buzzer Operation
    G02818561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Connect the positive (+) lead from the ohmmeter to terminal 1 and the negative (-) lead to terminal 2, and check that the buzzer sounds.

    If operation is not as specified, replace the buzzer.

  7. INSPECT WIRELESS DOOR LOCK BUZZER CIRCUIT (See  WIRELESS DOOR LOCK BUZZER CIRCUIT  ) 
  8. Connector disconnected: 

    INSPECT WIRELESS DOOR LOCK CONTROL RECEIVER CIRCUIT 

    Disconnect the connector from the receiver and inspect the connector on the wire harness side, as shown.

    Fig 8: Identifying Wireless Door Lock Control Receiver Connector Terminal View (Connector Disconnected)
    G02818562Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WIRELESS DOOR LOCK CONTROL RECEIVER CIRCUIT INSPECTION REFERENCE (CONNECTOR DISCONNECTED)

    Tester Connection Condition Specified Condition
    1 - Ground Constant Continuity
    5 - Ground Constant Battery Positive Voltage

    If the circuit is not as specified, inspect the circuit connected to other parts.

  9. Connector connected: 

    INSPECT WIRELESS DOOR LOCK CONTROL RECEIVER CIRCUIT 

    Connect the wire harness side connector to the receiver and inspect the wire harness side connector from the backside, as shown.

    Fig 9: Inspecting Wireless Door Lock Control Receiver Circuit With Connector Connected (From Back Side)
    G02818563Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WIRELESS DOOR LOCK CONTROL RECEIVER CIRCUIT INSPECTION REFERENCE (CONNECTOR CONNECTED)

    Tester Connection Condition Specified Condition
    3 - Ground Ignition Switch Position OFF Key Removed Transmitter OFF --> ON 4.5 - 5.5 V --> below 1 V
    2 - Ground Ignition Switch Position OFF Key Removed Transmitter OFF About 6 - 7 V

    If circuit is as specified, replace the receiver.

    If the circuit is not as specified, inspect the circuit connected to other parts.

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