Two way coded car alarm system
Troubleshooting
Fault Causes
1.The continuous
chirping of the siren
cannot be stopped by
transmitter after the
installation of ECU.
4. The central door
lock does not work
normally or does not
work at all.
2. Turn signals don’t
flash after disarming the
system and opening the
door, or the siren does
not chirp when the door
is opened without
disarming.
3. When the car parks
on roadside and
armed, there are false
alarms by passing
heavy vehicles.
Troubleshooting
Fault Causes
5. The siren does not chirp
when the alarm system is
triggered.
7. Transmitter is ineffective
or the control distance
decreased significantly.
6. The siren chirps sharply
in 10 seconds after arming
and the same situation
happened after disarming
and re-arming it again.
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The plug is improperly inserted.
The wire is improperly connected.
The transmitter does not match the
ECU.
The siren is damaged.
The fuse of the ECU is broken.
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Door trigger wire is not
connected properly.
Door switch has problem.
The siren is damaged.
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The sensitivity of the sensor is too
high.
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The motor of central lock is
damaged.
The wiring of central lock system
is wrong.
Fuse is broken.
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The sensor is damaged.
The doors or trunk is not closed.
The door's pin switch has
problem or wiring has problem.
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The siren is damaged.
The wire connection between
the siren and ECU has problem.
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The installation location of the
antenna is wrong.
The wiring of the antenna to
ECU has problem.
Tall building, radio tower or high
frequency electromagnetic wave
may affect the control range.
Low power of the battery.
The frequency of the transmitter
has been changed.
The transmitter is broken or
damaged.
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