Mitsubishi Montero (2004+). Manual — part 952

AUTOMATIC TRANSMISSION DIAGNOSIS

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AUTOMATIC TRANSMISSION

23A-383

STEP 9. Using scan tool MB991958, check data list item 75:
4LLc Detection 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 75: 4LLc Detection Switch.

• When the transfer shift lever position is 4LLc, scan

tool MB991958 display should be "ON."

• When the transfer shift lever position is other than

4LLc, scan tool MB991958 display should be "OFF."

(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 : Replace the PCM.

STEP 10. Measure the resistance at 4LLc detection switch
connector C-05.
(1) Disconnect connector C-05 and measure at the switch side.
(2) Turn the ignition switch to the "ON" position.
(3) Transmission range should be "N" range.

(4) Check for the continuity between terminal 1 and ground.

• When the transfer shift lever position is 4LLc there

should measure less than 2 ohms.

• When the transfer shift lever position is other than 4LLc

there should be open circuit.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the resistance 2 ohms?

YES : Go to Step 11.
NO : Replace the 4LLc detection switch. Refer to GROUP

23B, Transfer

P.23B-75

.

AC307591 AC

MB991911

MB991824

MB991827

AC307591

DATA LINK

CONNECTOR

AC204395

CONNECTOR : C-05

AG

C-05 (BR)

C-05

1

AC204918

C-05 HARNESS CONNECTOR :
4LLc DETECTION SWITCH SIDE

DA

1

AUTOMATIC TRANSMISSION DIAGNOSIS

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AUTOMATIC TRANSMISSION

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STEP 11. Check PCM connector D-133 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

P.00E-2

.

AC204681AD

CONNECTOR: D-133

D-133 (GR)

31 32

33 34

35 36 37 38 39 40 41 42 43
44 45 46 47 48 49

50 51

52 53

54 55 56

57 58

Continue

DATA LIST REFERENCE TABLE

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AUTOMATIC TRANSMISSION

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23A

DATA LIST REFERENCE TABLE

M1231109100111

MUT-III
SCAN TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM INSPECTION REQUIREMENT

NORMAL
CONDITION

2ND SOL
DUTY

33

Second solenoid
valve duty %

Transmission
range: Sport mode

Driving at constant
speed of 10 km/h
(6.2 mph) in 1st gear

100%

Transmission
range: Sport mode

Driving at constant
speed of 30 km/h (19
mph) in 2nd gear

0%

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 3rd gear

100%

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 4th gear

100%

Transmission
range: Sport mode

Driving at constant
speed of 70 km/h (44
mph) in 5th gear

0%

A/T CONT
RLY

54

A/T control relay
output voltage

Ignition switch: ON

Battery positive
voltage

CKP
SENSOR

21

Crankshaft position
sensor

• Engine: Idling

(after the
worming up)

• Transmission

range: P

Accelerator pedal:
Fully closed

600

− 900 r/min

Accelerator pedal:
Depressed

Gradually rises
from the above
value

DUAL
PRESS SW

65

Dual pressure switch

• Engine: Idling

• Transmission

range: P, N

A/C switch: ON
(While the A/C
compressor is in
operation)

ON

A/C switch: OFF

OFF

ENGINE
LOAD

57

Engine load
(volumetric
efficiency)

• Engine: Idling

• Transmission

range: N

Accelerator pedal:
fully closed

→

depressed

Data changes

ISS SENSOR 22

Input shaft speed
sensor

Gear range: 4th
gear

Driving at constant
speed of 50 km/h (31
mph)

1,400

− 1,700

r/min

L/R SOL
DUTY

31

Low-reverse
solenoid valve duty
%

Transmission
range: Sport mode

Driving at constant
speed of 10 km/h
(6.2 mph) in 1st gear

0%

Transmission
range: Sport mode

Driving at constant
speed of 30 km/h (19
mph) in 2nd gear

100%

DATA LIST REFERENCE TABLE

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AUTOMATIC TRANSMISSION

23A-386

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 3rd gear

100%

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 4th gear

0%

Transmission
range: Sport mode

Driving at constant
speed of 70 km/h (44
mph) in 5th gear

0%

O/D SOL
DUTY

34

Overdrive solenoid
valve duty %

Transmission
range: Sport mode

Driving at constant
speed of 10 km/h
(6.2 mph) in 1st gear

100%

Transmission
range: Sport mode

Driving at constant
speed of 30 km/h (19
mph) in 2nd gear

100%

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 3rd gear

0%

Transmission
range: Sport mode

Driving at constant
speed of 50 km/h (31
mph) in 4th gear

0%

Transmission
range: Sport mode

Driving at constant
speed of 70 km/h (44
mph) in 5th gear

0%

OD OFF
SIGNAL

66

Overdrive off signal
(Auto-cruise ECM
signal)

While auto-cruise
is engaged

Level road

OFF

Uphill grade

ON

OSS
SENSOR

23

Output shaft speed
sensor

Gear range: 4th
gear

Driving at constant
speed of 50 km/h (31
mph)

1,400

− 1,700

r/min

TR SWITCH

61

Transmission range
switch

Ignition switch: ON Transmission range:

P

P

Transmission range:
R

R

Transmission range:
N

N

Transmission range:
D

D

MUT-III
SCAN TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM INSPECTION REQUIREMENT

NORMAL
CONDITION