Mitsubishi Montero (2004+). Manual — part 927
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-283
STEP 6. Check the harness for open circuit or short circuit
to ground between A/T control relay connector D-13
terminal 1 and battery.
Q: Is the harness wire in good condition?
YES : Go to Step 19.
NO : Repair or replace the harness wire.
STEP 7. Measure the resistance at A/T control relay
connector D-13.
(1) Disconnect the A/T control relay and measure at the
harness side.
(2) Measure the resistance between terminal 2 and ground.
• The resistance should measure less than 2 ohms.
Q: Is the measured resistance less than 2 ohms?
YES : Go to Step 10.
NO : Go to Step 8.
AC204750
CONNECTOR : D-13
AB
PCM
1
3 4
2
AC204750
CONNECTOR : D-13
AB
PCM
1
3 4
2
AC204918
D-13 HARNESS CONNECTOR :
COMPONENT SIDE
DG
1
3
4
2
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-284
STEP 8. Check ground joint connector D-14 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
STEP 9. Check the harness for open circuit or damage
between A/T control relay connector D-13 terminal 2 and
ground.
Q: Is the harness wire in good condition?
YES : Go to Step 19.
NO : Repair or replace the harness wire.
AC204171
CONNECTOR : D-14
AM
4
9
8
6
5
7
1 2
3
10
AC204750
CONNECTOR : D-13
AB
PCM
1
3 4
2
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-285
STEP 10. Measure the control voltage to A/T control relay
connector D-13 by backprobing.
(1) Remove the A/T control relay.
(2) Do not disconnect the A/T control relay and measure at the
connector side.
(3) Turn the ignition switch to the "ON" position.
(4) Measure the voltage between terminal 4 and ground by
backprobing.
• The measured voltage should equal battery positive
voltage.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage equal to battery positive
voltage?
YES : Go to Step 16.
NO : Go to Step 11.
AC204750
CONNECTOR : D-13
AB
PCM
1
3 4
2
AC204918
D-13 HARNESS CONNECTOR :
HARNESS SIDE
DH
2
4
3
1
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-286
STEP 11. Measure the supply voltage at PCM connector
D-136 by backprobing.
(1) Do not disconnect connector D-136.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 127 and ground by
backprobing.
• The measured voltage should equal battery positive
voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage equal to battery positive
voltage?
YES : Go to Step 12.
NO : Go to Step 14.
AC204681AD
CONNECTOR: D-136
D-136 (GR)
121 122
123
124
125 126 127 128 129 130
131 132
133
134 135
136 137 138
139 140
141
142 143
144
145
146
AC204918 BU
D-136 HARNESS CONNECTOR :
HARNESS SIDE
138
131
132 133
145
140
146
141
139
124
123
142
134
125 126 127 128 129 130
137
144
136
143
135
122
121
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