DOOR CONTROL TRANSMITTER (w/ Smart Key System): Inspection: Inspection

WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT DOOR CONTROL TRANSMITTER

Inspect operation of the transmitter.
1. Remove the battery (lithium battery) from the transmitter. Refer to REMOVAL .
2. Install a new or normal battery (lithium battery).
  
  Fig 1: Inspecting Door Control Transmitter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  If a new or normal battery is not available, first connect 2 new 1.5 V 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.) away from the driver side outside door handle, test the transmitter by pointing its key plate at the vehicle and pressing a transmitter switch.
  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.

Inspect the battery capacity.

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. Refer to REMOVAL .
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.

Fig 2: Identifying Lead Wire

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Using an oscilloscope, check the transmitter battery voltage waveform.

Fig 3: Checking Transmitter Battery Voltage Waveform

HINT:

When measuring the battery voltage, while operating the lock switch of a door handle, bring the electrical key transmitter within the entry operating range to perform the measurement. For the entry operating range, refer to SYSTEM DESCRIPTION .

Standard voltage

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.