Mitsubishi Montero Sport (2004+). Manual - part 627

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-73

STEP 2. Measure the power supply voltage at input shaft 
speed sensor connector B-16.

(1) Disconnect connector B-16 and measure at the harness 

side.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 3 and ground.

• The voltage should measure battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?

YES : Go to Step 5.
NO :  Go to Step 3.

STEP 3. Check intermediate connector C-30 and junction 
block connector D-13 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 4.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

AC202362

2 3

1

CONNECTOR: B-16

AB

B-16 (B)

ACX02126

B-16 HARNESS CONNECTOR:
COMPONENT SIDE 

AK

AC202367

JUNCTION BLOCK (REAR)

4

3

10 11

9

8

5

12

1
6

2
7

19 20

6

17

7

5

15

14

16

8

18

3

11 12

4

2

10

1

9

13

CONNECTORS: C-30, D-13

D-13

D-13

C-30

C-30

AB

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-74

STEP 4. Check the harness for open circuit or short circuit 
to ground between input shaft speed sensor connector 
B-16 terminal 3 and the junction block connector D-13 
terminal 11.

Q: Is the harness wire in good condition?

YES : Go to Step 5.
NO :  Repair or replace the harness wire.

STEP 5. Measure the PCM to speed sensor output voltage 
at the input shaft speed sensor connector B-16.

(1) Disconnect connector B-16 from the speed sensor and 

measure voltage at the harness side.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 2 and ground.

• The voltage should measure between 4.5 and 4.9 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.5 and 4.9 volts?

YES : Go to Step 11.
NO :  Go to Step 6.

AC202362

2 3

1

CONNECTOR: B-16

AB

B-16 (B)

AC202368

JUNCTION BLOCK
 (REAR)

19 20

6

17

7

5

15

14

16

8

18

3

11 12

4

2

10

1

9

13

CONNECTOR: D-13

D-13

AB

AC202362

2 3

1

CONNECTOR: B-16

AB

B-16 (B)

ACX02127

B-16 HARNESS CONNECTOR:
COMPONENT SIDE 

AK

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-75

STEP 6. Measure the PCM output voltage to the speed 
sensor at the PCM connector C-92 by backprobing.

(1) Do not disconnect connector C-92.
(2) Disconnect connector B-16 at the input shaft speed sensor.
(3) Turn the ignition switch to the "ON" position.

(4) Measure the voltage between PCM terminal 103 and 

ground by backprobing.

• The voltage should measure between 4.5 and 4.9 volts.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.5 and 4.9 volts?

YES : Go to Step 7.
NO :  Go to Step 9.

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

AC202362

2 3

1

CONNECTOR: B-16

AB

B-16 (B)

AC001810AK

C-92 HARNESS CONNECTOR:
HARNESS SIDE

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-76

STEP 7. Check input shaft speed sensor connector B-16, 
PCM connector C-92 and intermediate connector C-96 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.

AC202362

2 3

1

CONNECTOR: B-16

AB

B-16 (B)

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