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Mitsubishi Montero Sport (2004+). Manual - part 618

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-37

FAIL-SAFE (IN CASE OF FAIL-SAFE VALVE A OPERATION)

R N

D
3
2
L

: LINE PRESSURE

: OIL PUMP SUCTION PRESSURE

: TORQUE CONVERTER CLUTCH
PRESSURE

: TORQUE CONVERTER AND LUBRICATION
PRESSURE

: TORQUE CONVERTER CLUTCH SOLENOID
VALVE PRESSURE

1. REVERSE

CLUTCH

2. LOW-REVERSE

BRAKE

3. SECOND

BRAKE

4. UNDERDRIVE

CLUTCH

5. OVERDRIVE

CLUTCH

6. ACCUMULATOR
7. CHECK

BALL

8. TORQUE

CONVERTER

CLUTCH

    9.  FAIL SAFE VALVE A
    10.  FAIL SAFE VALVE B
    11.  TORQUE CONVERTER CLUTCH CONTROL

VALVE

12.

SWITCH

VALVE

13. A/T FLUID COOLER
14.

LUBRICATION

15. LOW-REVERSE PRESSURE CONTROL VALVE
16. SECOND PRESSURE CONTROL VALVE

    17.  UNDERDRIVE PRESSURE CONTROL VALVE
    18.  OVERDRIVE PRESSURE CONTROL VALVE
    19.  TORQUE CONVERTER CLUTCH SOLENOID

VALVE

20. LOW-REVERSE SOLENOID VALVE
21.

SECOND

SOLENOID

VALVE

    22.  UNDERDRIVE SOLENOID VALVE
    23.  OVERDRIVE SOLENOID VALVE
    24.  TORQUE CONVERTER PRESSURE

CONTROL VALVE

25.

REGULATOR

VALVE

26.

MANUAL

VALVE

27.

OIL

FILTER

28.

OIL

PUMP

29.

OIL

STRAINER

30.

RELIEF

VALVE

31.

OIL

PAN

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-38

FAIL-SAFE (IN CASE OF FAIL-SAFE VALVE B OPERATION)

: LINE PRESSURE

: OIL PUMP SUCTION PRESSURE

: TORQUE CONVERTER CLUTCH
PRESSURE

: TORQUE CONVERTER AND LUBRICATION
PRESSURE

: TORQUE CONVERTER CLUTCH SOLENOID
VALVE PRESSURE

R N

D
3
2
L

1. REVERSE

CLUTCH

2. LOW-REVERSE

BRAKE

3. SECOND

BRAKE

4. UNDERDRIVE

CLUTCH

5. OVERDRIVE

CLUTCH

6. ACCUMULATOR
7. CHECK

BALL

8. TORQUE

CONVERTER

CLUTCH

    9.  FAIL SAFE VALVE A
    10.  FAIL SAFE VALVE B
    11.  TORQUE CONVERTER CLUTCH CONTROL

VALVE

12.

SWITCH

VALVE

13. A/T FLUID COOLER
14.

LUBRICATION

15. LOW-REVERSE PRESSURE CONTROL VALVE
16. SECOND PRESSURE CONTROL VALVE

    17.  UNDERDRIVE PRESSURE CONTROL VALVE
    18.  OVERDRIVE PRESSURE CONTROL VALVE
    19.  TORQUE CONVERTER CLUTCH SOLENOID

VALVE

20. LOW-REVERSE SOLENOID VALVE
21.

SECOND

SOLENOID

VALVE

    22.  UNDERDRIVE SOLENOID VALVE
    23.  OVERDRIVE SOLENOID VALVE
    24.  TORQUE CONVERTER PRESSURE

CONTROL VALVE

25.

REGULATOR

VALVE

26.

MANUAL

VALVE

27.

OIL

FILTER

28.

OIL

PUMP

29.

OIL

STRAINER

30.

RELIEF

VALVE

31.

OIL

PAN

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-39

LINE PRESSURE ADJUSTMENT

M1231108700110

1. Drain the transmission fluid.

NOTE: The hydraulic pressure test must be performed
before attempting any adjustments.

2. Remove the valve body cover.
3. Turn the adjusting screw shown in the illustration to adjust

the line pressure to the standard value. The pressure
increases when the screw is turned counterclockwise.
NOTE: Adjust to the middle of the standard range when the
transmission is at the 1st or 2nd gear.

Standard value: 0.98

− 1.05 MPa (142 − 152 psi)

NOTE: Each complete turn of the adjusting screw changes
pressure: 0.035 MPa (5.1 psi)

4. Install the valve body cover. Pour in one quart transmission

fluid.

5. Repeat the hydraulic pressure test. (Refer to

P.23A-26

Readjust the line pressure if necessary.

DIAGNOSTIC TROUBLE CODE CHART

M1231101200136

AC100548

ADJUSTING
SCREW

A/T
DIAGNOSTIC
TROUBLE
CODE

MFI
DIAGNOSTIC
TROUBLE
CODE

DIAGNOSIS ITEM

REFERENCE PAGE

−

TP sensor system

Short circuit

Group 13A,
Diagnostic
Trouble code
Procedures

P.13A-137

P.13A-148

P.13A-157

(P0121, P0122,
P0123

− Throttle

Position Sensor
Circuit)

−

Open circuit

−

Sensor out of adjustment

P0713

Transmission fluid temperature sensor
system

Open circuit

P.23A-42

P0712

Short circuit

P.23A-59

−

Crankshaft position sensor system

Open circuit

Group 13A,
Diagnostic
Trouble code
Procedures

P.13A-452

(P0335

−

Crankshaft
Position Sensor
Circuit)

P0715

Input shaft speed sensor system

Short circuit/open circuit

P.23A-69

P0720

Output shaft speed sensor system

Short circuit/open circuit

P.23A-91

−

Stoplight switch system

Short circuit

P.23A-113

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-40

NOTE: The MFI diagnostic trouble codes are the codes which are set when item "MFI" is selected on scan
tool MB991958 (MUT-III sub assembly). However, the codes above indicate failure in the automatic transmis-
sion.

P0705

Transmission range switch system

Open circuit

P.23A-123

Short circuit

P.23A-181

P0500

Vehicle speed sensor system

Short circuit/open circuit

P.23A-215

P0753

Low-reverse solenoid valve system