Transmitter (4B21-29, 4B210-212)

4B21 : CHECK TRANSMITTER BATTERY.




1. Remove battery from transmitter.

NOTE: To prevent static electricity damage to transmitter printed circuit board, touch steel area of building with hand to discharge static electricity carried on body or clothes before disassembling transmitter.




2. Measure voltage battery.

NOTE:
- Battery discharge occurs during measurement. Complete measurement within 5 seconds.
- During battery voltage measurement, voltage falls more than 1.8 volts during 3 seconds period. Weak battery is indicated. Replace battery.

CHECK: Is the voltage more than 2 V ?

YES: Go to step 4B22.

NO: Replace transmitter battery. (Use CR2032 or equivalent.)

4B22: CHECK LED OF TRANSMITTER.
1. Press either the LOCK/ARM or UNLOCK/DISARM button six times to synchronize with the keyless entry control module.
2. Press the LOCK/ARM button.

CHECK: Does the LED blink one time ?

YES: Go to step 4B23.

NO: Replace transmitter.

4B23: CHECK LED OF TRANSMITTER.
keep the LOCK/ARM button pressed.

CHECK: Does the LED blink one time and then turn on ?

YES: Go to step 4B24.

NO: Replace transmitter.

4B24: CHECK LED OF TRANSMITTER.
Press the UNLOCK/DISARM button.

CHECK: Does the LED blink one time ?

YES: Go to step 4B25.

NO: Replace transmitter.

4B25: CHECK LED OF TRANSMITTER.
keep the UNLOCK/DISARM button pressed.

CHECK: Does the LED blink two times ?

YES: Go to step 4B26.

NO: Replace transmitter.

4B26: CHECK POWER DOOR LOCK FUNCTION.
Perform lock and unlock function of power door lock with transmitter.

CHECK: Does it function normally ?

YES: Go to step 4B27.

NO: Replace transmitter.

4B27: CHECK ON/OFF SELECT HORN SIGNAL.
Press the LOCK/ARM or UNLOCK/DISARM button.

CHECK: Does the horn signal chirp ?

YES: Go to step 4B28.

NO: keep both LOCK/ARM and UNLOCK/DISARM buttons pressed for more than 1.5 seconds. Go to step 4B28.

4B28: CHECK ON/OFF SELECT HORN SIGNAL.
keep both LOCK/ARM and UNLOCK/DISARM buttons pressed for more than 1.5 seconds.

CHECK: Does the horn signal chirp two times ?

YES: Go to step 4B29.

NO: Replace transmitter.

4B29: CHECK ON/OFF SELECT HORN SIGNAL.
Press LOCK/ARM or UNLOCK/DISARM button.

CHECK: Does the horn signal chirp ?

YES: Replace transmitter.

NO: Go to step 4B210.

4B210: CHECK ON/OFF SELECT HORN SIGNAL.
Keep both LOCK/ARM and UNLOCK/DISARM buttons pressed for more than 1.5 seconds.

CHECK: Does the horn signal chirp one time ?

YES: Go to step 4B211.

NO: Replace transmitter.

4B211: CHECK ON/OFF SELECT HORN SIGNAL.
Press LOCK/ARM and UNLOCK/DISARM button.

CHECK: Does the horn signal chirp ?

YES: Go to step 4B212.

NO: Replace transmitter.

4B212: CHECK FOR UNCHECKED TRANSMITTER.

Check for an unchecked transmitter.

CHECK: Does an unchecked transmitter exist ?

YES: Check for an unchecked transmitter. Go to step 4B21.

NO: Go to step 4B31.