Mitsubishi Montero (2004+). Manual — part 887

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-123

.

CIRCUIT OPERATION

• Battery positive voltage is applied to the transmis-

sion range switch (terminal 7) when the ignition
switch is turned "ON."

• Battery positive voltage is applied to the PCM

(terminal 66) when the selector lever is in the "P"
range. The PCM judges that the selector lever is
in the "P" range when the battery positive voltage
is applied.

• Battery positive voltage is applied to the PCM ter-

minal 67 (75 or 76) when the selector lever is in
the "R" range ("N" or "D" range). The PCM judges
that the selector lever is in the "R" range ("N" or
"D" range) when the battery positive voltage is
applied.

.

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

.

AC204191

CONNECTORS : D-208, D-212

5 6

2

4

3

1

JUNCTION BLOCK
(FRONT VIEW)

3

10

9

4

11

8

7

1

5

2

6

D-208

D-208

D-212

D-212

AS

AC204194

E-113

E-113

E-11

E-11

BE

E-115

E-115

E-114

E-111, E-114

3

10

16

9

7 8

6

1

4

2

5

11

14

1213

15

1

6

2

7 8 9 10 11 12 13 14

3 4 5

E-111

CONNECTORS : E-11, E-111, E-113, E-114,
E-115

38

28

16

33

22

10

31

19

7

1

18

30

29

17

5

6

21

20

32

8

2

9

25

13

3

24

23

3435

1112

27

26

3637

14

4

15

8

3

4 5

1

2

6 7

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-124

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
and D 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 and
D ranges respectively for more than one minute.

.

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

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-125

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 the data reading mode.

• Item 61: Transmission Range Switch.

• Move the selector lever to "P," "R," "N," "D" and sport

mode positions and confirm that the selected trans-
mission ranges match the positions shown on scan
tool MB991958 (Sport mode is indicated as "D" 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

P.00-6

.

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 sport mode position is not displayed correctly
("D" is not displayed).] : Go to Step 36.

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

transmission range?
YES : Go to Step 3.
NO : Replace the transmission range switch. Refer to

GROUP 23B, Transmission

P.23B-14

.

AC307591 AC

MB991911

MB991824

MB991827

AC307591

DATA LINK

CONNECTOR

TRANSMISSION
RANGE

TERMINAL
CONNECTION OF
TESTER

SPECIFIED
CONDITION

P

1

− 7

Less than 2 ohms.

R

7

− 8

N

2

− 7

D

3

− 7

ACX01187AD

P

R

N

D

AUTOMATIC TRANSMISSION DIAGNOSIS

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AUTOMATIC TRANSMISSION

23A-126

STEP 3. Check transmission range switch connector C-04,
joint connector D-01, junction block connector D-212 and
intermediate connector E-11 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

.

AC204395

CONNECTOR : C-04

AF

C-04 (B)

4
9

5

10

3
8

2
7

6

1

AC204170

CONNECTOR : D-01

CD

9 10

8

6 7

31 32

30

29

18 19 20 21

5

4

2

1

3

27

26

24

23

25

12 13 14 15 16 17

28

11
22
33

AC204173

CONNECTOR : D-212

AZ

3

10

9

4

11

8

7

1

5

2

6

JUNCTION BLOCK
(FRONT VIEW)

AC204176

CONNECTOR : E-11

AZ

3

10

16

9

7 8

6

1

4

2

5

11

14

1213

15