Mitsubishi Montero Sport (2004+). Manual — part 666

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-229

STEP 2. Using scan tool MB991958, read the A/T
diagnostic trouble code.

(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC 54 set? (DTC 54 may be set along with multiple

DTCs).
YES : Refer to

P.23A-319

DTC 54: A/T Control Relay

System.

NO : Go to Step 3.

STEP 3. Using scan tool MB991958, read the A/T
diagnostic trouble code.

(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.

(3) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC 36 set?

YES : Go to Step 8.
NO : Go to Step 4.

AK303629AB

MB991911

MB991827

MB991824

16-PIN

AK303629AB

MB991911

MB991827

MB991824

16-PIN

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-230

STEP 4. Measure the low-reverse solenoid valve resistance
at A/T control solenoid valve assembly connector B-02.

(1) Disconnect connector B-02 and measure at the solenoid

valve side.

(2) Measure the resistance between solenoid valve assembly

connector B-02 terminals 6 and 10.

Resistance value: 2.7

− 3.4 Ω [at 20°C (68°F)]

Q: Is the measured resistance 2.7

− 3.4 Ω [at 20°C (68°F)]?

YES : Go to Step 6.
NO : Go to Step 5.

STEP 5. Measure the solenoid valve resistance at the
low-reverse solenoid valve connector B-02-5 inside the
transmission.

(1) Disconnect solenoid valve connector B-02-5 and measure

at the solenoid valve side.

(2) Measure the resistance between low-reverse solenoid

valve terminals 1 and 2.

Resistance value: 2.7

− 3.4 Ω [at 20°C (68°F)]

Q: Is the measured resistance 2.7

− 3.4 Ω [at 20°C (68°F)?

YES : Replace the harness wire between A/T control

solenoid valve assembly connector B-02 and the
solenoid valves.

NO : Replace the low-reverse solenoid valve. Refer to

GROUP 23B, Valve Body

P.23B-67

.

AC202437

6

10

4

9

5

3

8

2

7

1

CONNECTOR:B-02

AB

B-02 (B)

TRANSMISSION
CONTROL CABLE

AC001960

AJ

B-02 HARNESS CONNECTOR:
A/T CONTROL SOLENOID SIDE

AC004272AN

2

1

CONNECTOR : B-02-5

2

1

AC201141BJ

B-02-5 HARNESS CONNECTOR :
LOW-REVERSE SOLENOID
VALVE SIDE

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-231

STEP 6. Check A/T control solenoid valve assembly
connector B-02, PCM connector C-92 and intermediate
connector C-96 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.

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

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-232

Q: Are the connectors and terminals in good condition?

YES : Go to Step 7.
NO : Repair or replace the damaged components. Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

.

AC202318

22

9 10

20

19

6 7 8

21

17

1516

5

14

1213

3

2

4

18

11

1

AB

CONNECTOR: C-96

C-96