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Door Control Transmitter: Inspection

  1. INSPECT ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY 
    1. Inspect operation of the transmitter.
      1. Remove the battery (lithium battery) from the transmitter (See REPLACEMENT 
      2. Install a new or non-depleted battery (lithium battery).

        HINT:

        When a new or non-depleted battery is not available, first connect 2 new 1.5 batteries in series. Then connect leads to the batteries and apply 3 V to the transmitter, as shown in the illustration.

      3. From outside the vehicle, approximately 1 m (3.28 ft) from the driver side outside door handle, test the transmitter by pointing its key plate at the vehicle and pressing a transmitter switch.
        Fig 1: Inspecting Electrical Key Transmitter Sub-Assembly
        G05863413Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        OK: The door lock can be operated via the transmitter. The LED comes on more than once. 

        • The operational area differs depending on the user, the way the transmitter is held and the location.
        • The transmitter's faint electric waves may be affected if the area has strong electric waves or noise. The transmitter's operation area may be shortened or the transmitter may not function.
    2. Inspect the battery capacity.
      1. Remove the battery from the electrical key transmitter that does not operate. Attach a lead wire (0.6 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative terminal (See REPLACEMENT  ).
        NOTE: Do not wrap the lead wire around a terminal, wedge it between the terminals, or solder it. A 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.
        Fig 2: Pulling Lead Wire
        G05863414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Using an oscilloscope, check the transmitter battery voltage waveform.

        HINT:

        Measure the transmitter battery voltage while pressing the LOCK or UNLOCK switch on the transmitter.

        Standard voltage 

        ITEM SPECIFICATIONS

        Item Content
        Tester Connection Battery positive (+) - Battery negative (-)
        Tool Setting 0.5 V/DIV., 100 ms/DIV.
        Condition Engine switch OFF, all doors closed and lock switch pushed
        Specified Condition 2.2 to 3.2 V (Refer to the waveform)

        If the result is not as specified, replace the transmitter battery.

        Fig 3: Checking Transmitter Battery Voltage Waveform
        G05863415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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