Refer To Group - Mitsubishi Electric 55624R(S)-MF Service Manual

TROUBLESHOOTING
ENCE TABLE (ETACS-RELATED PROB-
LEMS ONLY)
For information concerning the locations of electric-
al components, refer to GENERAL.
1. ARMING/DISARMING RELATIONSHIP
Problem
The system is not armed even
though the arming procedures
are followed.
(The SECURITY light doesn't illu-
minate, and the alarm doesn't
function.)
[The central door locking sys-
normally. If the central locking
system does not function nor-
mally, refer to GROUP 42-
The arming procedures are fol-
lowed, but the SECURITY light
doesn't illuminate.
(There is an alarm, however,
after about 20 seconds have
The armed condition is not main-
tained when a door is unlocked
runk lock is unlocked by using
he key.
NOTE
The "ECU" (electronic control unit) indicates the ETACS control unit.
THEFT-ALARM SYSTEM - Troubleshooting
QUICK-REFER-
Probable cause
Damaged or disconnected
wiring of ECU power supply
circuit
Malfunction of the door lock
actuator switch
Short-circuit of door lock
actuator switch input circuit
Damaged or disconnected
wiring of left-front and right-
front door switch input cir-
Malfunction of the ECU
Damaged or disconnected
wiring of SECURITY light
power supply or drive cir-
Damaged or disconnected
Malfunction of the ECU
Damaged or disconnected
wiring of door lock actuator
input circuit
Malfunction of the door lock
actuator switch
Malfunction of the ECU
Damaged or disconnected
key
wiring of trunk lid
der unlock switch input cir-
Malfunction of the trunk lid
key cylinder unlock switch
Malfunction of the ECU
Check method
Check by the circuit
check No. 1 proce-
dures. (P.54-169)
Check by following in-
dividual part and the
circuit check No. 6 pro-
cedures. (P.54-174)
Check by following in-
dividual part and circuit
check No. 5 proce-
dures. (P.54-173)
Check by following in-
dividual part and circuit
check No. 9 proce-
dures. (P.54-176)
Check by following in-
dividual part and the
circuit check No. 6 pro-
cedures. (P.54-174)
If a malfunction is indi-
checking the input sig-
ing individual part and
the circuit check No.7
procedures. (P.54-175)
I
Remedy
Replace the fuse No. 17
or repair the harness.
Replace the door lock
actuator or repair the
harness.
Repair the harness or
replace the door switch.
Replace the ECU.
Replace the fuse No.9
or repair the harness.
Replace the light bulb.
Replace the ECU.
Repair the harness or
replace the door lock
actuator.
Replace the ECU.
Repair the harness or
replace the trunk lid key
cylinder.
Replace the ECU.