Mitsubishi Outlander (2003+). Manual — part 198
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-87
STEP 3. Hydraulic pressure test
Each hydraulic pressure of the elements below,
which diagnosis codes indicate, should be within the
standard value.
•
diagnosis code 41: Underdrive clutch,
low-reverse brake
•
diagnosis code 42: Underdrive clutch, second
brake
•
diagnosis code 43: Underdrive clutch, overdrive
clutch
•
diagnosis code 44: Overdrive clutch, second
brake
•
diagnosis code 46: Reverse clutch, low-reverse
brake
OK: Refer to Hydraulic Pressure Test
Q: Is the check result normal?
YES :
Go to Step 6.
NO <some hydraulic pressures are abnormal> :
Go to Step 5.
NO <all hydraulic pressure are abnormal> :
Go to
Step 4.
STEP 4. Adjust the line pressure and recheck the
diagnosis code.
(1) Adjust the line pressure (Refer to
(2) Test drive the vehicle.
(3) Check the diagnosis code.
Q: Is the diagnosis code set?
YES :
Go to Step 5.
NO :
The inspection is complete.
STEP 5. Disassemble, clean and assemble the
valve body and recheck the diagnosis code.
(1) Check the mounting bolts for looseness, and the
O-ring, solenoid valve and valve body for
damage.
Replace the valve body assembly if the damages
are thought to be irreparable.
(2) Test drive the vehicle.
(3) Check the diagnosis code.
Q: Is the diagnosis code set?
YES :
Go to Step 7.
NO :
The inspection is complete.
STEP 6. Replace the engine-A/T-ECU and then
recheck the diagnosis code.
(1) Replace the engine-A/T-ECU.
(2) Test drive the vehicle.
(3) Check the diagnosis code.
Q: Is the diagnosis code set?
YES :
Go to Step 7.
NO :
The inspection is complete.
STEP 7. Check the A/T internal clutch and brake,
and then recheck the diagnosis code.
(1) Check the following clutches or brakes according
to the output diagnosis codes, replace if
necessary.
•
If diagnosis code 41, 42, 43 are output
individually or in a group, replace the
underdrive clutch.
•
If diagnosis code 43, 44 are output
individually or in a group, replace the
overdrive clutch.
•
If diagnosis code 46 is output, replace the
reverse clutch.
•
If diagnosis code 41, 46 are output
individually or in a group, replace the
low-reverse brake.
•
If diagnosis code 42, 44 are output
individually or in a group, replace the second
brake.
•
If diagnosis code 41 is output, replace the
one-way clutch.
(2) Test drive the vehicle.
(3) Check the diagnosis code.
Q: Is the diagnosis code set?
YES :
Eliminate the cause of the noise.
NO :
The inspection is complete.
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-88
Code No.52: Damper clutch system
OPERATION
The engine-A/T-ECU engages and disengages the
damper clutch (incorporated in the torque converter)
by operating the DCC solenoid valve in response to
driving conditions.
diagnosis code set conditions
If the damper clutch solenoid valve drive duty ratio is
100% for a continuous period of 4 seconds or more
when the damper clutch starts operating, diagnosis
code 52 is output.
Possible causes
•
Malfunction of input shaft speed sensor
•
Damaged harness wires and connectors
•
Malfunction of the engine-A/T-ECU
•
Malfunction of damper clutch solenoid valve
•
Malfunction of valve body assembly
•
Malfunction of torque converter
DIAGNOSIS
STEP 1. MUT-II/III diagnosis code
If diagnosis code 52 is output, the input shaft speed
sensor may be defective.
Q: Is diagnosis code 22 set?
YES :
Refer to diagnosis code 22: Input shaft
speed sensor system
NO :
Go to Step 2.
STEP 2. MUT-II/III diagnosis code
If diagnosis code 52 is output, the damper clutch
solenoid valve may be defective.
Q: Is diagnosis code 36 set?
YES :
Refer to diagnosis code 36: Damper clutch
solenoid valve system
NO :
Go to Step 3.
STEP 3. MUT-II/III data list
•
Item 36: Damper clutch solenoid valve duty ratio
(Refer to data list reference table
).
•
Item 52: Damper clutch slip amount (Refer to
data list reference table
).
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 4.
STEP 4. Hydraulic pressure test
Measure the torque converter hydraulic pressure.
(Refer to
OK: Refer to Hydraulic Pressure Test
.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 5.
STEP 5. Adjust the line pressure and recheck the
diagnosis code.
(1) Adjust the line pressure (Refer to
(2) Test drive the vehicle.
(3) Check the diagnosis code.
Q: Is the diagnosis code set?
YES :
Go to Step 7.
NO :
The inspection is complete.
STEP 6. Replace the engine-A/T-ECU and then
recheck the diagnosis code.
(1) Replace the engine-A/T-ECU.
(2) Test drive the vehicle.
(3) Check the diagnosis code.
Q: Is the diagnosis code set?
YES :
Go to Step 7.
NO :
The inspection is complete.
STEP 7. Disassemble, clean and assemble the
valve body and recheck the diagnosis code.
(1) Check the mounting bolts for looseness, and the
O-ring, solenoid valve and valve body for
damage.
Replace the valve body assembly if the damages
are thought to be irreparable.
(2) Test drive the vehicle.
(3) Check the diagnosis code.
Q: Is the diagnosis code set?
YES :
Check the torque converter and replace it if
necessary.
NO :
The inspection is complete.
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-89
Code No.54: A/T control relay system
OPERATION
If a fail-safe operation is activated, the A/T control
relay shuts off the power supply to the solenoid valve
in accordance with the signal from the
engine-A/T-ECU.
diagnosis code set conditions
Code No. 54 will be set if the A/T control voltage is
less than 7 V after the ignition switch is turned on.
If code No. 54 is set, the transmission will be held in
3rd gear.
Possible causes
•
Malfunction of A/T control relay
•
Damaged harness wires and connectors
•
Malfunction of the engine-A/T-ECU
BATTERY
RELAY
BOX
A/T
CONTROL
RELAY
ENGINE-
A/T-ECU
IGNITION
SWITCH (IG1)
SOLENOID
VALVE POWER
SOURCE
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
AC309568
A/T control system circuit
AC
TROUBLESHOOTING <A/T>
AUTOMATIC TRANSMISSION (FF)
23A-90
DIAGNOSIS
STEP 1. MUT-II/III data list
Item 54: Relay voltage (Refer to data list reference
table
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
−
How to Cope with Intermittent
Malfunction
NO :
Go to Step 2.
STEP 2. Check the A/T control relay connector
Refer to
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the A/T control relay.
STEP 3. Connector check: B-16X A/T control
relay 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. Measure the voltage at A/T control relay
connector B-16X.
Disconnect the A/T control relay, and measure the
voltage between terminal No.4 and earth at the relay
box side.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Go to Step 5.
STEP 5. Connector check: A-14 intermediate
connector
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the defective connector.
AC309525
AB
Connector: B-16X
Front of
vehicle
Relay box
side
AC309525
AB
Connector: B-16X
Front of
vehicle
Relay box
side
AC308686
Connector: A-14 <RHD>
AG
A-14 (GR)
AC308679 AG
A-14(GR)
Connector: A-14 <LHD>
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