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Wireless Door Lock Control System: Inspection

WARNING: This page is about a different car, the 2002 Toyota ECHO. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: Refer to "Wireless door lock control receiver and transmitter replacement." See REPLACEMENT .
  1. Inspect wireless door lock transmitter operation  :
    1. Using a screwdriver, remove the cover.
      Fig 1: Removing Transmitter Cover
      G01894915Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the battery (lithium battery).
      3. NOTE: When a new or normal battery can not be obtained, connect 2 new 1.5 V batteries in series, connect the battery (+) to the battery receptacle side terminal and battery (-) to the bottom terminal, then apply 3 V voltage to the transmitter.
      Fig 2: Substituting Batteries For Testing Purposes
      G01894914Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install a new or normal battery (lithium battery).
      4. NOTE:
      • The minimum operation distance differs according to operator, the way of holding, and location.
      • As weak wave is used, operation distance might be shortened when noise is detected in strong wave or used frequency.
    4. In the location where is approx. 1 M away from driver's outside handle in the right direction, and check the transmitter operation when pressing transmission switch on the surface of the transmitter body.

      Standard: 

      Remote control of vehicle door lock can be operated. 

    5. Install the battery (lithium battery).
    6. Install a cover, so that rubber cover is not distorted or slipped off.
    2. NOTE:
    • Make sure to use the TOYOTA electrical tester.
    • With the battery unloaded, judge can not be made whether the battery is available or not on the test.
    • 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).
  2. Check battery capacity  :
    1. Using a screwdriver, remove the cover.
    2. Remove the battery (lithium battery) from the transmitter.
      Fig 3: Identifying Lithium Battery
      G01894916Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the lead to the (-) terminal of the transmitter and install the battery.
      Fig 4: Installing Lithium Battery
      G01894917Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the (+) tester to the (+) battery (lithium battery), and (-) tester to the lead respectively.
      Fig 5: Checking Battery Voltage & Locating Transmitter Switch Button
      G01894918Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Press one of the transmitting switches on the transmitter for approx. 1 second.
      6. NOTE:
      • When the temperature of the battery is low, the judge can not be made correctly.

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

      • By auto power off function, the voltage becomes no load voltage (more than 2.5 V) condition after 20 seconds from the switch was pressed.
      • Make sure to read the voltage before of it.
      • High voltage might be shown 1 to 2 times after leaving the battery, judge should be made with the voltage shown at the 3rd time or later.
    6. Press the transmitting switch on the transmitter again to check the voltage.

      Standard: 2.1 V or more 

    7. Disconnect the lead.
    8. Set the battery (lithium battery) in the transmitter.
    9. Install the cover, so that the rubber cover is not distorted or slipped off.
  3. Inspect wireless door lock control receiver circuit  :
    1. Disconnect the connector from the receiver and inspect the connector on the wire harness side, as shown below.
      Fig 6: Identifying Wireless Door Lock Control Receiver Terminals (Wire Harness Side)
      G01894919Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 7: Wireless Door Lock Control Receiver Terminal Specifications (Wire Harness Side)
      G01894920Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    2. Connect the wire harness side connector to the receiver and inspect the wire harness side connector from the back side, as shown below.
      Fig 8: Identifying Wireless Door Lock Control Receiver Terminals (Back Side)
      G01894921Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 9: Wireless Door Lock Control Receiver Terminal Specifications (Back Side)
      G01894922Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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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