Tachometer Check; Fuel Gauge Unit Check - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

54A-20
Engine speed indicator
Main fuel gauge unit
Sub fuel gauge unit
CHASSIS ELECTRICAL -

TACHOMETER CHECK

Paper clip
1. Insert paper clip (Zem clip) from harness side of the probe
2. Compare measured values of individual engine speed
Probe for detection
of engine speed

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,
Position F
2. When float is moved slowly between Position F and E,
Position E
Combination Meter
for detection of engine speed to connect engine speed
indicator.
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
ensure that resistance between fuel gauge unit terminal
and earth terminal is within standard value.
Standard Value:
Float Position Main fuel gauge unit
Position F 2 ± 1 Ω
Position E 41 ± 1 Ω
also ensure that resistance is smoothly changing.
Sub fuel gauge unit
2 ± 1 Ω
69 ± 1 Ω