Door Control Transmitter Module: Inspection

1. Remove the battery (lithium battery) from the transmitter.
2. Install a new or normal battery (lithium battery).
   Fig 1: Identifying Door Control Transmitter Module

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. If a new or normal battery is not available, connect 2 new 1.5 V batteries in series. Connect the positive (+) battery electrode to the battery receptacle side terminal, and the negative (-) battery electrode to the bottom terminal, and apply a voltage of 3 V to the transmitter.
   Fig 2: Inspecting Door Control Transmitter Module

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. In a location that is approximately 1 m (3.28ft.) away from the driver side outside door handle, point the key plate of the transmitter at the vehicle and check operation of the transmitter by pressing the transmitter switches on the transmitter body.

   Standard: 

   The door lock/unlock can be operated via remote control. 

   The LED illuminates when each switch is pressed. 

   HINT:

   • The minimum operational distance differs depending on the way the transmitter is held and the location.
   • Since the transmitter uses faint electric waves, the operational distance might be shortened if noise or a strong electric wave occurs in the area where the frequency is used.
5. Install the battery (lithium battery).

HINT:

• The capacity of the battery can be checked only when the battery is installed in the transmitter. For a lithium battery used in the transmitter, a voltage of more than 2.5 V is shown on the tester until the energy is completely consumed without the battery installed in the transmitter. Therefore, it is necessary to measure the voltage with the battery installed in the transmitter (a resistance of 1.2 kΩ is applied to the battery) to check the amount of energy left in the battery.
• If the transmitter is faulty, the amount of energy left in the battery might not be checked correctly.

1. Remove the battery (lithium battery) from the transmitter.
2. Connect the lead to the negative (-) terminal of the transmitter and install the battery.
3. Connect the positive (+) tester probe to the positive (+) side of the battery (lithium battery) and the negative (-) tester probe to the lead respectively.
4. Press one of the transmitter switches on the transmitter for approximately 1 second.
5. Press the same or another transmitter switch again and check the voltage.

   Standard Voltage: 

   2.2 V or higher 

   Fig 3: Connecting Positive Tester Probe To Positive Side Of Battery And Negative Tester Probe To Lead

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   • If the temperature of the battery is low, the inspection cannot be performed correctly. If the result of the test is less than 2.2 V, conduct the test again after leaving the battery in a place with a temperature of 18°C (64°F) for more than 30 minutes.
   • The automatic power-off function causes the battery voltage to be 2.5 V or more (a voltage with no resistance applied to the battery) when 0.8 seconds have passed after the switch is pressed. Therefore, read the voltage immediately after the switch is pressed.
6. Remove the lead.
7. Set the battery (lithium battery) in the transmitter.