Mitsubishi Montero Sport (2004+). Manual — part 679

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STEP 12. Check the harness for an open or short circuit to
ground between A/T control solenoid valve assembly
connector B-02 (terminals 3, 4 and 5) and PCM connector
C-92 (terminals 106, 120 and 130).

Q: Are the harness wires in good condition?

YES : Go to Step 13.
NO : Repair or replace the harness wire(s).

AC202437

6

10

4

9

5

3

8

2

7

1

CONNECTOR:B-02

AB

B-02 (B)

TRANSMISSION
CONTROL CABLE

AC202317

PCM

120

107

119

106

129 130

118

105

117

114115116

126127128

104

111

103

112

108

101102

109110

121122123

124

113

125

CONNECTOR: C-92

C-92 (GR)

AB

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STEP 13. Check the harness for an open or short circuit to
ground between A/T control solenoid valve assembly
connector B-02 (terminals 3, 4, 5, and 9) and solenoid valve
connectors B-02-1, B-02-2 and B-02-3.

Q: Is the harness wire in good condition?

YES : Replace the PCM.
NO : Replace the harness wire.

DTC 36 (P0743): Torque Converter Clutch Solenoid Valve System

.

SOLENOID VALVE SYSTEM CIRCUIT
Refer to

P.23A-224

.

.

CIRCUIT OPERATION
Refer to

P.23A-224

.

.

DESCRIPTIONS OF MONITOR METHODS
If lock-up is not engaged, and solenoid terminal volt-
age is below specified value, PCM judges that torque
converter clutch solenoid valve has a failure.

.

MONITOR EXECUTION
Continuous

.

MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)

Other Monitor (There is no temporary DTC stored

in memory for the item monitored below)

• DTC 41 (P0731): 1st gear incorrect ratio

• DTC 42 (P0732): 2nd gear incorrect ratio

• DTC 43 (P0733): 3rd gear incorrect ratio

• DTC 44 (P0734): 4th gear incorrect ratio

• DTC 46 (P0736): Reverse gear incorrect ratio

• DTC 31 (P0753): Low-reverse solenoid malfunc-

tion

• DTC 32 (P0758): Underdrive solenoid malfunc-

tion

• DTC 33 (P0763): Second solenoid malfunction

• DTC 34 (P0768): Overdrive solenoid malfunction

• DTC 54 (P1751): A/T control relay malfunction

Sensor (The sensor below is determined to be

normal)

• Low-reverse solenoid

• Underdrive solenoid

• Second solenoid

• Overdrive solenoid

• A/T control relay

.

AC202437

6

10

4

9

5

3

8

2

7

1

CONNECTOR:B-02

AB

B-02 (B)

TRANSMISSION
CONTROL CABLE

AC004272AQ

2

1

CONNECTORS : B-02-1, B-02-2, B-02-3

B-02-3

B-02-2

B-02-1

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LOGIC FLOW CHARTS (Monitor Sequence)

.

DTC SET CONDITIONS

Check Conditions

• Solenoid status: either solid ON or OFF.

• Voltage of battery: 10 volts or more.

Judgement Criteria

• Solenoid voltage: 3 volts or less. (0.3 second)

• If DTC 36 (P0743) is set consecutively four times,

the transmission is locked into 3rd gear as a
fail-safe measure, and the "N" range light flashes
once per second.

.

OBD-II DRIVE CYCLE PATTERN
Start the engine, and keep the vehicle stopped in P
range for 5 seconds.

.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)

• Malfunction of torque converter clutch solenoid

valve

• Damaged harness, connector

• Malfunction of the PCM

AC205240

START

END

TCC solenoid is in ON
or OFF steady state

Voltage of battery > 10 V

Solenoid circuit
voltage < 3 V

Continuous failure
for 0.3 sec.

Good

Malfunction

Yes

No

Yes

No

Yes

No

Yes

No

TCC solenoid valve is in
ON or OFF steady state

AC

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DIAGNOSIS

Required Special Tool:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

STEP 1. Using scan tool MB991958, check actuator test
item 06: Torque Converter Clutch Solenoid Valve.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to actuator test mode.

• Item 06: Torque Converter Clutch Solenoid Valve.

• An audible clicking or buzzing should be heard when

the torque converter clutch solenoid valve is ener-
gized.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid valve operating properly?

YES : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunctions

P.00-7

.

NO : Go to Step 2.

AK303629AB

MB991911

MB991827

MB991824

16-PIN