Mitsubishi Lancer Evolution 7. Manual — part 382
CHASSIS ELECTRICAL -
Combination Meter
54A-17
Inspection procedure 3
Fuel gauge inoperative (other meters are operated)
Probable cause
When speedometer and tachometer are properly operated, harness from power
source to combination meter is normal.
D
Fuel gauge unit fault
D
Harness or connector fault
D
Meter assembly fault
OK
Replace main fuel gauge unit.
NG
Check harness from main fuel gauge unit to combination
meter.
Repair
Check trouble symptom.
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
(1) NG
Fig. 1
MB991219
Earth
Fuel gauge
Test lamp
(12V-3.4W)
Repair
Check trouble symptom.
Check the following connectors:
C-02, D-26, C-146, D-30, D-27, D-09
Earth
Test lamp
(12V-3.4W)
Fuel gauge
MB991219
Fig. 2
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
Replace meter assembly
OK
(2) NG
(2) NG
Check trouble symptom.
Replace meter assembly
NG
Replace main fuel gauge unit.
(1) NG
OK
NG
(2) NG
CHASSIS ELECTRICAL -
Combination Meter
54A-18
Inspection procedure 4
Water temperature gauge inoperative (other meters are
operated)
Probable cause
When speedometer and tachometer are properly operated, harness from power
source to combination meter is normal.
D
Water temperature gauge unit fault
D
Harness or connector fault
D
Meter assembly fault
OK
Replace water temperature gauge unit.
NG
Repair
NG
OK
Check trouble symptom.
Check water temperature gauge circuit.
D
Disconnect water temperature gauge unit connector B-110.
D
Connect test lamp (12V–5.2W-12V–7.0W) to connector at
the harness side (Refer to Fig. 2).
D
Ignition switch: ON
D
Is test lamp ON?
OK: Illuminated
Check the following connectors: C-02, C-130, B-110
NG
Repair
NG
OK
Check trouble symptom.
NG
Replace meter assembly.
Check harness from combination meter to water temperature
gauge.
Connector
Earth
Test lamp
(12V - 3.4W
-12V - 7.0W)
Fig. 2
CHASSIS ELECTRICAL -
Combination Meter
CHASSIS ELECTRICAL -
Combination Meter
54A-19
Inspection procedure 5
All meters inoperative
Probable cause
When individual indicators and warning lamps are properly operated, harness
from power source (IG1) to combination meter is normal.
D
Meter assembly fault
D
Harness or connector fault
NG
Repair
NG
OK
Check trouble symptom.
Repair
OK
Check the following connectors:
<L.H. drive vehicles> C-01, C-29, C-213
<L.H. drive vehicles> C-01, C-213
NG
Check harness from ignition switch (IG1) to combination meter.
Replace meter assembly.
Repair
NG
OK
Check the following connectors: C-01
NG
Repair
Check harness from combination meter to body earth.
ON-VEHICLE SERVICE
SPEEDOMETER CHECK
(1) Ensure that tire pressure indicates the value of tire
pressure label.
(2) Place the vehicle on speedometer tester.
(3)
(4) For prevention of front wheel lateral runout, install
extension fittings on front towing eye and tie down hook,
and install both ends on anchor plate.
(5) For prevention of vehicle from starting out, install chain
or wire (the other end of which is tightly fixed on rear
towing eye) on the vehicle.
(6) Ensure that speedometer indication range is within
standard value, or pointer deflection is within limit value.
Caution
During operation, avoid excessive acceleration and
deceleration.
Standard value:
Vehicle speed km/h
40
80
120
160
Indication range of
speedometer km/h
37 - 45
75 - 88
113
-
132
150 -
176
Limit:
Pointer deflection
(vehicle speed: 35 km/h or more): ±3 km/h
Extension
fitting
Front
Anchor plate
OK
Set the free rollers securely under rear wheels.
CHASSIS ELECTRICAL -
Combination Meter
54A-20
TACHOMETER CHECK
1. Insert paper clip (Zem clip) from harness side of the probe
for detection of engine speed to connect engine speed
indicator.
2. Compare measured values of individual engine speed
with tachometer values, and ensure that indication
allowance is within standard value.
Standard value:
Engine speed (rpm)
Indication allowance of tachometer
rpm
700
±70
2,000
-100 +150
3,000
-100 +225
4,000
-125 +275
5,000
-125 +325
6,000
-125 +375
7,000
-100 +400
8,000
+400
FUEL GAUGE UNIT CHECK
Remove fuel gauge unit from fuel tank.
BASIC RESISTANCE OF FUEL GAUGE UNIT
1. When float of fuel gauge unit is in Position F and E,
ensure that resistance between fuel gauge unit terminal
and earth terminal is within standard value.
Standard Value:
Float Position
Main fuel gauge unit
Sub fuel gauge unit
Position F
2 ± 1 Ω
2 ± 1 Ω
Position E
41 ± 1 Ω
69 ± 1 Ω
2. When float is moved slowly between Position F and E,
also ensure that resistance is smoothly changing.
Paper clip
Engine speed indicator
Probe for detection
of engine speed
Position F
Position E
Main fuel gauge unit
Sub fuel gauge unit
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