Dodge Stealth 1994, Service Manual

Page: 422 / 434

ELECTRICAL Theft-alarm Svstem
Trouble symptom Cause Check method Remedy
Engine would not start
[Engine starting is possible There is a short-circuit of Check by using check
when the starter relay is in
the starter relay activation
chart
Repair the harness.
circuit
the switched-off (normally
closed) condition, with
the clutch switch in
the switch-off and the ECU har-
ness connector disconnected.]
When, as a test of the alarm,
a door or the
is opened
without using the key, or the
hood is opened from within
the vehicle, the horn and
the theft-alarm horn sound but
the headlights don’t flash.
(The headlights can, however,
be switched ON by using the
passing switch.)
Damaged or disconnected
wiring of headlight power
Check by using check
Repair the harness or
supply circuit or headlight
chart
replace the diode
activation circuit
Replace the headlight
relay or the headlight,
Malfunction of the ECU. Replace the ECU.
The headlights flash during an
alarm test but the horn or the
Damaged or disconnected
theft alarm horn does not sound.
wiring of horn relay power
Check by using check
chart Repair the harness.
supply circuit or horn
Replace the horn.
activation circuit
Replace dedicated fuse
Damaged or disconnected
No. the fusible
wiring of the theft-alarm
link No.
horn relay power supply
circuit or the theft-alarm
horn activation circuit.
The system is not deactivated
when, during an alarm test in
which the alarm is intentionally
activated, the door or
is unlocked by using the key.
(The system also cannot be
disarmed.)
Malfunction of the ECU.
Replace the ECU.
Damaged or disconnected If input checks
Repair the harness.
wiring of door key cylinder indicate a malfunction,
Replace the key
and unlock switch
input circuit
check by using check
cylinder switch or the
chart
switch.
Malfunction of door key
cylinder and
unlock switch.
Malfunction of the ECU Replace the ECU.
ECU: Electronic Control Unit
NOTE
If the unlock switch or door key cylinder unlock switch is operated roughly, or if these have been
installed incorrectly or switches themselves are defective the ECU may not accept the warning or alarm cancelling
In such case, the alarm operation will take place when the door is opened using a key.
[When key cylinder switch has been shorted, however, if the ignition switch is turned ON, the ECU judges
(2)
the detection as faulty and thereafter, it will prevent setting of (warning) alarm until the shorting is
If the is opened using a key and is left opened when the door key cylinder switch system has a trouble (wiring
harness damage, open circuit, etc.), the ECU judges it as the holding mode and does not produce alarm even
when the door is opened.