Mitsubishi Lancer Evolution IX. Manual — part 590
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-43
(2) Measure the voltage between 4WD-ECU
connector C-26 terminal No.32 and earth.
OK: 0.5
− 1.5 V
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Go to Step 5.
STEP 3. Connector check: C-26 4WD-ECU
connector.
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Repair the defective connector.
STEP 4. M.U.T.-II/III data list
Item 18: Pressure sensor (Refer to data list reference
table
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Cope with Intermittent
).
NO :
Replace the 4WD-ECU.
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>
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>
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-44
STEP 5. Connectors check: C-26 4WD-ECU
connector, C-122, C-134, F-21 intermediate
connector, F-26 pressure sensor connector.
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the defective connector.
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
AC311016AE
Connector: C-122 <RH drive vehicles>
C-122 (L)
AC311015AG
Connector: C-134 <LH drive vehicles>
C-134 (B)
AC311016AD
Connector: C-134 <RH drive vehicles>
C-134 (GR)
AC311042
F-21 (B)
AB
Connector: F-21, F-26
F-26 (B)
Sensor side
F-21
F-26
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-45
STEP 6. Check the harness between 4WD-ECU
connector C-26 (terminal No.43, 32) and pressure
sensor connector F-26 (terminal No.1, 2).
Check the power supply line, output line for short or
open circuit.
Q: Is the check result normal?
YES :
Replace the pressure sensor.
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>
AC311042
AC
Connector: F-26
F-26 (B)
Sensor side
F-26
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-46
Code No.46 Pressure sensor system (open earth)
PRESSURE SENSOR SYSTEM CIRCUIT
Refer to
OPERATION
Refer to
DIAGNOSIS CODE SET CONDITIONS
Code No.46 is set when the output signal from the
pressure sensor is above 2.0 V.
PROBABLE CAUSES
• Malfunction of the pressure sensor
• Damaged harness wires and connectors
• Malfunction of the 4WD-ECU
DIAGNOSIS
STEP 1. Measure the voltage at pressure sensor
connector F-26.
Disconnect the pressure sensor connector, and
measure the resistance between terminal 3 and body
earth at the harness side.
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Go to Step 3.
STEP 2. Connector check: F-26 pressure sensor
connector.
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Replace the pressure sensor.
NO :
Repair the defective connector.
AC311042
AC
Connector: F-26
F-26 (B)
Sensor side
F-26
AC311042
AC
Connector: F-26
F-26 (B)
Sensor side
F-26
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