Inspection Procedure - Mitsubishi Lancer Evolution-IV Workshop Manual

Inspection Procedure 2

Tachometer does not work.
The ignition signal may not be input from the engine, or there may be a malfunction
in the power supply or earth circuit.
MUT-II Self-Diag code
Is the diagnosis code 44 relating to MPI
system output?
OK
Disconnect the combination meter con-
nector B-08 and measure at the harness
sides.
1. Measure the voltage
terminal No.33 and earth.
OK: 5 V
2. Continuity between the terminal
No.34 and earth
OK: Continuity
3. Voltage between the terminal No.42
and earth
OK: System voltage
OK
Replace the tachometer.
CHASSIS ELECTRICAL –
YES
Refer to Group 13 – Troubleshooting,
No. 44 Ignition coils and power
transistors.
1. NG
Check the following connectors.
B-08, A-36, B-61, B-64, A-41, A-109
between
Check trouble symptom.
2. NG
Check the following connectors.
B-08, B-50, B-64, A-41
3. NG
Check trouble symptom.
Check the following connectors.
B-08, B-75, B-76
Check trouble symptom.
Combination Meters
Probable cause
D Malfunction of tachometer
D Malfunction of harness or connector
NG
OK
NG
NG
OK
NG
NG
OK
NG
54-25
Repair
Check the harness between the engine-
ECU and combination meter, and repair
if necessary.
Repair
Check the harness between the com-
bination meter and the body earth, and
repair if necessary.
Repair
Check the harness between the power
supply and combination meter, and
repair if necessary.