Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 440

Inspection procedure 3
Fuel gauge inoperative (other meters are operated)
When speedometer and tachometer are properly operated, harness from power
source to combination meter is normal.
Main fuel gauge circuit check
D Disconnect main fuel gauge unit connector D-09.
D Use special tool on connector at the harness side to
connect test lamp (12V – 3.4W). (Refer to Fig. 1)
D Ignition switch: ON
(1) Is test lamp ON?
OK: Illuminated
(2) Is fuel gauge pointer swinging to the haft range.
OK: Swinging
Sub fuel gauge circuit check
D Disconnect sub fuel gauge unit connector D-27.
D Use special tool on connector at the harness side to
connect test lamp (12V – 3.4W). (Refer to Fig. 2)
D Ignition switch: ON
(1) Is test lamp ON?
OK: Illuminated
(2) Is fuel gauge pointer swinging to the haft range.
OK: Swinging
Check the following connectors:
C-02, D-26, C-146, D-30, D-27, D-09
Check trouble symptom.
Check harness from main fuel gauge unit to combination
meter.
Fig. 1
MB991219
Earth
Fuel gauge
CHASSIS ELECTRICAL -
(1) NG
(1) NG
OK
Test lamp
(12V - 3.4W)
Combination Meter
Probable cause
D Fuel gauge unit fault
D Harness or connector fault
D Meter assembly fault
OK
Replace main fuel gauge unit.
(2) NG
Check trouble symptom.
Replace meter assembly
NG
OK
Replace main fuel gauge unit.
(2) NG
Check trouble symptom.
NG
Replace meter assembly
(2) NG
Repair
NG
Repair
Fig. 2
MB991219
Earth
54A-17
Fuel gauge
Test lamp
(12V - 3.4W)