Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 915

22A-8
MANUAL TRANSMISSION - Troubleshooting <ACD>
INSPECTION PROCEDURES FOR DIAGNOSIS CODES
Code No.12 Power supply voltage (valve power supply)
system
The power supply circuit opens or short-circuits if the power supply voltage of the
4WD-ECU is below 9 V or above 18 V.
Or code No.12 is output when the battery voltage drops.
NOTE
Refer to the corresponding item if any other diagnosis code is being output.
Check the battery.
NG→Replace
MUT-II Data List
D No.10 battery voltage
OK: System voltage
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
Measure at 4WD-ECU connector C-44.
D Measure the ECU terminal voltage.
D Ignition switch: ON
D Voltage between terminal 13 and earth
OK: System voltage
Check the following connector: C-44
NG→Repair
MUT-II Data List
D No.10 battery voltage
OK: System voltage
NG→Replace the 4WD-ECU
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
Code No.13 Fail-safe relay system <inside 4WD-ECU>
Code No.13 will be output as the open circuit or short circuit of the fail-safe relay
when the voltage is above 6 V during failsafe relay OFF or when the voltage is
below 6 V during ON.
Replace the 4WD-ECU.
OK
NG
OK
OK
Probable cause
D Defective harness or connector
D Defective battery
D Defective 4WD-ECU
NG
Check the following connectors:
<L.H. drive vehicles> C-44, C-130, C-213, C-210
<R.H. drive vehicles> C-44, C-213, C-210
NG→Repair
Check the harness between the ignition switch and 4WD-ECU
D Check for the open circuit, short circuit, or damage of the
power supply
NG→Repair
Probable cause
D Defective 4WD-ECU
OK