Mitsubishi Montero Sport (2004+). Manual - part 710

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-405

STEP 7. Check PCM connector C-92 and intermediate 
connector C-96 for loose, corroded or damaged terminals, 
or terminals pushed back in the connector.

Q: Are the connectors and terminals in good condition?

YES : Go to Step 8.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

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

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

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-406

STEP 8. Check harness for short circuit to ground between 
transfer low detection switch connector B-17 terminal 1 
and PCM connector C-92 terminal 112.

Q: Is the harness wire in good condition?

YES : Go to Step 9.
NO :  Repair or replace the harness wire.

AC103769

CONNECTOR: B-17

AC

B-17

1

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-407

STEP 9. Using scan tool MB991958, check data list item 75: 
Transfer Low Detection Switch.

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 data reading mode.

• Item 75: Transfer Low Detection Switch.

• When the transfer shift lever position is 4L, the scan 

tool MB991958 display should be "ON."

• When the transfer shift lever position is other than 

4L, the scan tool MB991958 display should be 
"OFF."

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch 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 Malfunction 

P.00-7

.

NO :  Replace the PCM.

STEP 10. Measure the resistance at transfer low detection 
switch connector B-17.

(1) Disconnect connector B-17 and measure at the switch side.
(2) Turn the ignition switch to the "ON" position.

(3) Selector lever position should be "N" range.

(4) Check for the continuity between terminal 1 and ground.

• When the transfer shift lever position is 4L there should 

measure less than 2 ohm.

• When the transfer shift lever position is other than 4L 

there should be open circuit.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the resistance 2 ohms?

YES : Go to Step 11.
NO :  Replace the transfer low detection switch. Refer to 

GROUP 23B, Transfer 

P.23B-73

.

AK303629AB

MB991911

MB991827

MB991824 

16-PIN

AC103769

CONNECTOR: B-17

AC

B-17

1

ACX02191AE

B-17 HARNESS CONNECTOR:
TRANSFER LOW DETECTION 
SWITCH SIDE 

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-408

STEP 11. Check PCM connector C-92 for loose, corroded 
or damaged terminals, or terminals pushed back in the 
connector.

Q: Are the connector and terminals in good condition?

YES : Go to Step 9.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

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