Mitsubishi Montero Sport (2004+). Manual — part 694
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
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STEP 7. Check the harness for open circuit, short circuit to
ground and damage between combination meter
connector C-03 terminal 43 and PCM connector C-92
terminal 121.
Q: Is the harness wire in good condition?
YES : Go to Step 8.
NO : Repair or replace the harness wire.
AC202395
49
48
50
46
45
44
41 42 43
47
CONNECTOR: C-03
C-03
AB
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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AUTOMATIC TRANSMISSION
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STEP 8. Using scan tool MB991958, read the A/T
diagnostic trouble code.
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) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC 56 set?
YES : Replace the PCM.
NO : The procedure is complete.
AK303629AB
MB991911
MB991827
MB991824
16-PIN
Continue
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
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23A
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
INSPECTION PROCEDURE 1: Engine does not Crank.
.
COMMENT
If the engine does not crank when the selector lever
is placed in the "P" or "N" position, the cause is prob-
ably a malfunction of transmission range switch sys-
tem, transmission control cable assembly, engine
system, torque converter or transmission oil pump.
.
TROUBLESHOOTING HINTS (The most likely
causes for this case:)
• Malfunction of the transmission range switch
• Malfunction of the transmission control cable
assembly
• Malfunction of the engine system
• Malfunction of the torque converter
• Malfunction of the transmission oil pump
• Malfunction of the PCM
DIAGNOSIS
Required Special Tool:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
STEP 1. Using scan tool MB991958, read the A/T
diagnostic trouble code.
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) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is A/T DTCs 27 or 28 set?
YES <DTC 27 set> : Refer to
, DTC 27:
Transmission Range Switch System (Open Circuit).
YES <DTC 28 set> : Refer to
, DTC 28:
Transmission Range Switch System (Short Circuit).
NO : Go to Step 2.
AK303629AB
MB991911
MB991827
MB991824
16-PIN
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
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STEP 2. Check the transmission control cable assembly.
Move the selector lever to each position. The manual control
lever position of the transmission range switch should match
the transmission range.
Q: Is the manual control lever position correct?
YES : Go to Step 3.
NO : Repair the transmission control cable. Refer to
, Transmission Range Switch and Control
Cable Adjustment. Retest the system to verify the
repair.
STEP 3. Check the engine.
Refer to GROUP 13A, Diagnosis
− Trouble Symptom Chart −
Starting
Q: Is the inspection result good?
YES : Go to Step 4.
NO : Repair or replace the appropriate engine
components.
STEP 4. Check the torque converter.
(1) Remove the transmission.
(2) Turn the torque converter and check for a binding or
sticking condition. Check the ring gear for damaged or
missing teeth.
NOTE: Since the torque converter drives the oil pump, turn-
ing the torque converter also checks for a binding oil pump.
If either of these components are damaged the Transmis-
sion will need to be removed for inspection.
Q: Does the torque converter turn freely without any
missing or damaged teeth?
YES : Go to Step 5.
NO : Replace the torque converter.
STEP 5. Repair or replace the starter.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 6.
AC004273
P
P
R
N
D
3
2
L
AB
PARK/NEUTRAL
POSITION SWITCH
MANUAL
CONTROL
LEVER
AC103774
TORQUE CONVERTER
AE
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