Mitsubishi Montero Sport (2004+). Manual — part 680
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
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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
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 31 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
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AUTOMATIC TRANSMISSION
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STEP 4. Measure the torque converter clutch 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 7 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
torque converter clutch solenoid valve connector B-02-4
inside the transmission.
(1) Disconnect solenoid valve connector B-02-4 and measure
at the solenoid valve side.
(2) Measure the resistance between torque converter clutch
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 torque converter clutch solenoid valve.
Refer to GROUP 23B, Valve Body
AC202437
6
10
4
9
5
3
8
2
7
1
CONNECTOR:B-02
AB
B-02 (B)
TRANSMISSION
CONTROL CABLE
AC001975AJ
B-02 HARNESS CONNECTOR:
A/T CONTROL SOLENOID SIDE
AC004272AT
2
1
CONNECTOR : B-02-4
2
1
AC201141BN
B-02-4 HARNESS CONNECTOR :
TORQUE CONVERTER
CLUTCH SOLENOID VALVE
SIDE
AUTOMATIC TRANSMISSION DIAGNOSIS
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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
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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
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
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