Mitsubishi Electric 55624R(S)-MF Service Manual page 84

54-84
TROUBLESHOOTING GUIDE-REFERENCE TABLE
Problem
With the dome light switch at the
door-interlocked position, the dome
light does not illuminate when any
door is opened.
(The dome light does illuminate,
however, when the dome light
switch is set to the "ON" position.)
When the ignition switch is switched
to the "ON" position while the dome
light illumination is at the dimmed
setting, the dome light does not
switch OFF.
NOTE
The "ECU" (electronic control unit) indicates the ETACS control unit
LIGHTING SYSTEM
Probable cause
Damage or disconnec-
tion of the door switch
(all doors) input circuit.
Damage or disconnec-
tion of the dome light
activation circuit.
Malfunction of the elec-
Damage or disconnec-
tion of the ignition
switch input circuit.
Malfunction of the elec-
Check method Remedy
Replace the door
If a malfunction is indi-
switch, or repair the
wiring harness.
input check (P.54-83).
make the circuit and in-
dividual part check No.3
Replace the dome light,
Make the circuit and in-
dividual part check No.4 or repair the wiring har-
ness.
Replace the electronic
control unit.
If a malfunction is indi- Repair the wiring har-
ness.
input check (P.54-83).
make the circuit and in-
dividual part check No.2
Replace the electronic
control unit.