Mitsubishi Montero Sport (2004+). Manual — part 640
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-125
DESCRIPTIONS OF MONITOR METHODS
If no signal is input from transmission range switch
for more than 30 seconds, PCM judges that trans-
mission range switch has a failure.
.
MONITOR EXECUTION
Continuous
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Not applicable
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
LOGIC FLOW CHARTS (Monitor Sequence)
.
DTC SET CONDITIONS
Check Conditions, Judgement Criteria
• Transmission range switch: no signal detected.
(30 seconds)
.
OBD-II DRIVE CYCLE PATTERN
Start the engine, keep the vehicle stopped in P, R, N,
D, 3, 2 and L ranges respectively for more than one
minute, and turn "LOCK" (OFF) the ignition switch.
Then restart the engine, and stop the vehicle in P, R,
N, D, 3, 2 and L ranges respectively for more than
one minute.
.
AC205064
START
Is there no
input signal?
Yes
No
Continuous failure
for 30 secs.
Yes
Yes
Yes
No
No
No
Continuous failure
for 30 secs.
Is there more than
one input signal?
Malfunction
Good
Malfunction
END
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-126
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• Malfunction of the transmission range switch
• Malfunction of the ignition switch
• Damaged harness, connector
• 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, check data list item 61:
Transmission Range 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 61: Transmission Range Switch.
• Move the selector lever to the "P," "R," "N," "D," "3,"
"2," "L" positions and confirm that the selected trans-
mission ranges match the positions shown on scan
tool MB991958.
(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
.
NO (no correct transmission range is displayed) : Go to
Step 2.
NO (Only "P" position is not displayed correctly) : Go to
Step 6.
NO (Only "R" position is not displayed correctly) : Go to
Step 14.
NO (Only "N" position is not displayed correctly) : Go to
Step 21.
NO (Only "D" position is not displayed correctly) : Go to
Step 28.
NO (Only "3" position is not displayed correctly) : Go to
Step 35.
NO (Only "2" position is not displayed correctly) : Go to
Step 42.
NO (Only "L" position is not displayed correctly) : Go to
Step 49.
AK303629AB
MB991911
MB991827
MB991824
16-PIN
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-127
STEP 2. Check the transmission range switch.
Measure the resistance between the terminals for each trans-
mission range as indicated in the table below.
Q: Is the measured resistance less than 2 ohms for each
selector position?
YES : Go to Step 3.
NO : Replace the transmission range switch. Refer to
GROUP 23B, Transmission
TRANSMISSION
RANGE
TERMINAL
CONNECTION OF
TESTER
SPECIFIED
CONDITION
P
1
− 7
Less than 2 ohms.
R
7
− 8
N
2
− 7
D
3
− 7
3
4
− 7
2
5
− 7
L
6
− 7
AC202393
4
9
5
10
3
8
2
7
6
1
CONNECTOR: B-01
<RWD>
<4WD>
B-01 (B)
B-01 (B)
AB
AC004076
P
R
N
D
3
2
L
AB
AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-128
STEP 3. Check transmission range switch connector B-01,
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
AC202393
4
9
5
10
3
8
2
7
6
1
CONNECTOR: B-01
<RWD>
<4WD>
B-01 (B)
B-01 (B)
AB
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
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