Mitsubishi Outlander (2003+). Manual - part 198

 

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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 

P.23A-152

.

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 

P.23A-158

).

(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 

P.23A-28

.

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 

P.23A-82

.

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 

P.23A-133

). 

Item 52: Damper clutch slip amount (Refer to 
data list reference table 

P.23A-133

). 

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 

P.23A-152

.)

OK: Refer to Hydraulic Pressure Test 

P.23A-152

.

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 

P.23A-158

).

(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 

P.23A-133

.)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

 How to Cope with Intermittent 

Malfunction 

P.00-6

.)

NO : 

Go to Step 2.

STEP 2. Check the A/T control relay connector

Refer to 

P.23A-149

.

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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