Keyless Entry Transmitter Battery: Testing and Inspection

DOOR LOCK: TRANSMITTER BATTERY: INSPECTION

1. INSPECT TRANSMITTER BATTERY

(a) 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 Removal.

NOTICE:

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.





(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:





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