Mitsubishi Lancer Evolution IX. Manual — part 606
![](/vehicles/winoney/wruvea/ger/prs.png)
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-107
STEP 7. Connectors check: C-25 4WD-ECU
connector, C-124, C-134, F-21 intermediate
connector, F-24 proportional valve connector
<LH drive vehicles> or C-25 4WD-ECU connector,
C-134, C-138, F-21 intermediate connector, F-24
proportional valve connector <RH drive
vehicles>.
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair the defective connector.
AC311002
4WD-ECU
Harness side
C-25 (Y)
AB
Connector: C-25
4WD-ECU
C-25 (Y)
Rear console
assembly
<LH drive vehicles>
<RH drive vehicles>
AC311015AB
Connector: C-124 <LH drive vehicles>
C-124
AC311015AG
Connector: C-134 <LH drive vehicles>
C-134 (B)
AC311016AD
Connector: C-134 <RH drive vehicles>
C-134 (GR)
AC311016AB
Connector: C-138 <RH drive vehicles>
C-138
AC311042
F-21 (B)
AE
Connector: F-21, F-24
F-24 (B)
F-21
Valve side
F-24
![](/vehicles/winoney/wruvea/ger/gees.png)
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-108
STEP 8. Check the harness between 4WD-ECU
connector C-25 terminal No.1 and proportional
valve connector F-24 terminal No.3.
Check the output line for short or open circuit.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the wiring harness.
AC311002
4WD-ECU
Harness side
C-25 (Y)
AB
Connector: C-25
4WD-ECU
C-25 (Y)
Rear console
assembly
<LH drive vehicles>
<RH drive vehicles>
AC311042
AD
Connector: F-24
F-24 (B)
Valve side
F-24
![](/vehicles/winoney/wruvea/ger/heveves.png)
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-109
Code No.81 Electric pump relay system (open circuit or short circuit)
ELECTRIC
PUMP
ELECTRIC
PUMP RELAY
4WD-ECU
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
FUSIBLE
LINK
27
Electric pump relay system circuit <LH drive vehicles>
![](/vehicles/winoney/wruvea/ger/filllo.png)
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-110
OPERATION
The electric pump relay provides power to activate
the electric pump according to the signal from the
4WD-ECU.
DIAGNOSIS CODE SET CONDITIONS
Code No.81 is set when the coil circuit of the electric
pump relay has open circuit or short circuit.
PROBABLE CAUSES
• Malfunction of electric pump relay
• Damaged harness wires and connectors
• Malfunction of the 4WD-ECU
DIAGNOSIS
STEP 1. M.U.T.-II/III actuator test
Item 04: Electric pump drive
OK: Operating sound can be heard.
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Cope with Intermittent
).
NO :
Go to Step 2.
STEP 2. Check the electric pump relay.
Refer to
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the electric pump relay.
ELECTRIC
PUMP
ELECTRIC
PUMP RELAY
4WD-ECU
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
FUSIBLE
LINK
27
Electric pump relay system circuit <RH drive vehicles>
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