Mitsubishi Lancer Evolution IX. Manual — part 614
![](/vehicles/winoney/wruvea/ger/otr.png)
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-139
STEP 2. Connectors check: C-01 combination
meter connector, C-26 4WD-ECU connector,
C-122 intermediate connector <LH drive
vehicles> or C-01 combination meter connector,
C-26 4WD-ECU connector, C-138 intermediate
connector <RH drive vehicles>.
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
STEP 3. Check the harness between combination
meter connector C-01 (terminal No.10, 14, 15) and
4WD-ECU connector C-26 (terminal No.40, 52,
51).
AC311015AO
Connector: C-01 <LH drive vehicles>
C-01
C-01
AC311037
C-01
AG
Connector: C-01 <RH drive vehicles>
C-01
AC311002
4WD-ECU
Harness side
C-26 (Y)
AC
Connector: C-26
4WD-ECU
C-26 (Y)
Rear console
assembly
<LH drive vehicles>
<RH drive vehicles>
AC311015AC
Connector: C-122 <LH drive vehicles>
C-122
AC311016AB
Connector: C-138 <RH drive vehicles>
C-138
AC311015AO
Connector: C-01 <LH drive vehicles>
C-01
C-01
AC311037
C-01
AG
Connector: C-01 <RH drive vehicles>
C-01
![](/vehicles/winoney/wruvea/ger/xpp.png)
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-140
Check the output line for short or open circuit.
Q: Is the check result normal?
YES :
Replace the ACD mode indicator lamp
assembly.
NO :
Repair the wiring harness.
AC311002
4WD-ECU
Harness side
C-26 (Y)
AC
Connector: C-26
4WD-ECU
C-26 (Y)
Rear console
assembly
<LH drive vehicles>
<RH drive vehicles>
![](/vehicles/winoney/wruvea/ger/rolin.png)
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-141
INSPECTION PROCEDURE 5: The ACD does not operate (no diagnosis code)
COMMENTS ON TROUBLE SYMPTOM
Insufficient operating oil, oil leakage, faulty opera-
tions of the oil pressure unit, and faulty operations of
the ACD transfer may be suspected.
PROBABLE CAUSES
• Leakage of transfer oil
• Insufficient transfer oil
• Leakage of oil pressure line
• Insufficient fluid
• Malfunction of the hydraulic unit
• Malfunction of the ACD transfer
DIAGNOSIS
STEP 1. Check the transfer oil.
Refer to
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Go to Step 2.
STEP 2. Check the transfer oil leaks.
Check that the transfer oil is not leaking.
Q: Is the check result normal?
YES :
Add the transfer oil.
NO :
Repair the leaking part and add the transfer
oil.
STEP 3. Check the fluid.
Refer to
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
STEP 4. Check the fluid leaks.
Check that the fluid is not leaking.
Q: Is the check result normal?
YES :
Add the fluid.
NO :
Repair the leaking part and add the fluid.
STEP 5. Check the ACD operation.
Refer to
Q: Is the check result normal?
YES :
The inspection is complete.
NO :
Go to Step 6.
STEP 6. Check the fluid pressure.
Refer to
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 8.
STEP 7. Check the hydraulic pressure line.
Check that the hydraulic pressure line is not contam-
inated with foreign materials.
Q: Is the check result normal?
YES :
Replace the ACD transfer.
NO :
Repair.
STEP 8. Perform air bleeding.
Refer to
Q: Is the check result normal?
YES :
The procedure is complete.
NO :
Replace the hydraulic pressure unit.
![](/vehicles/winoney/wruvea/ger/marag.png)
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-142
DATA LIST REFERENCE TABLE
M1221011200010
Item
No.
Check item
Check condition
Normal
condition
01
Wheel speed sensor
<FR>
Execute actual driving.
The speed meter
display and
M.U.T.-II/III
display match.
02
Wheel speed sensor
<FL>
03
Wheel speed sensor
<RR>
04
Wheel speed sensor
<RL>
05
Wheel speed sensor
<FR> (0.2 km/h)
06
Wheel speed sensor
<FL> (0.2 km/h)
07
Wheel speed sensor
<RR> (0.2 km/h)
08
Wheel speed sensor
<RL> (0.2 km/h)
09
Vehicle speed
10
Battery voltage
Ignition switch: ON
System voltage
11
Proportional valve
current <ACD>
During ACD operation
50
− 1,000 mA
12
Proportional valve
current <AYC>
During AYC operation
50
− 1,000 mA
13
TPS voltage
• Ignition switch: ON
• Engine: Stopped
Accelerator pedal: Full
closed
535
− 735 mV
Accelerator pedal: Press
Gradually rises
from the above
value
Accelerator pedal: Full
throttle
4,500
− 5,000
mV
14
Longitudinal G-sensor
voltage
Ignition switch: ON
Vehicle stopped (horizontal)
state
2.4
− 2.6 V
Actual driving
The displayed
value increases
and decreases
mainly around
2.5 V.
15
Lateral G-sensor
voltage
Ignition switch: ON
Vehicle stopped (horizontal)
state
2.4
− 2.6 V
Perform actual driving
The displayed
value increases
and decreases
mainly around
2.5 V.
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