Mitsubishi Montero (2002-2004). Manual - part 465

IGNITION SWITCH

TSB Revision

CHASSIS ELECTRICAL

54A-31

REMOVAL SERVICE POINT

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<<A>> STEERING LOCK CYLINDER REMOVAL
1. Insert the key in the steering lock cylinder and turn it to the 

"ACC" position.

2. Using a small Phillips head screwdriver, pull the steering 

lock cylinder toward you.

INSPECTION

M1543019501716

IGNITION SWITCH LESS CONINUITY CHECK

Disconnect ignition switch connector without removing the igni-
tion switch and steering lock cylinder. Then check the continu-
ity.

KEY REMINDER SWITCH CHECK

Disconnect key reminder switch connector without removing 
the ignition switch and steering lock cylinder. Then check the 
continuity.

IGNITION KEY RING ANTENNA CHECK

Check for continuity between terminal 3 and terminal 7.

Standard value: 2 ohms or less

ACX01628AB

LOCK PIN

SWITCH 
POSITION

TESTER CONNECTION SPECIFIED 

CONNECTION

"LOCK" (OFF) 1 

− 2, 1 − 3, 1 − 4, 1 − 5, 

1 

− 6, 2 − 4, 2 − 5, 2 − 6, 

4 

− 5, 4 − 6

Open circuit

"ACC"

1 

− 6

Less than 2 ohms

"ON"

1 

− 2, 1 − 4, 1 − 6, 2 − 4, 

2 

− 6, 4 − 6

Less than 2 ohms

"START"

1 

− 2, 1 − 4, 1 − 5, 2 − 4, 

2 

− 5, 4 − 5

Less than 2 ohms

ACX00769AB

STATUS OF 
IGNITION KEY

TESTER 
CONNECTION

SPECIFIED 
CONNECTION

Removed

4 

− 6

Less than 2 ohms

Inserted

4 

− 6

Open circuit

ACX00770 AB

COMBINATION METERS ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-32

COMBINATION METERS ASSEMBLY AND VEHICLE SPEED 

SENSOR

COMBINATION METERS ASSEMBLY AND VEHICLE SPEED SENSOR 
DIAGNOSIS

INTRODUCTION TO COMBINATION METER DIAGNOSIS

M1543009900992

All vehicles are equipped with an electrical speedom-
eter, tachometer, fuel and coolant temperature 
gauges. The individual gauges are not replaceable. If 
the gauges do not function correctly, there is most 
likely a fault in the electrical system. All inputs, pow-
ers and grounds must be confirmed as correct before 
the combination meter can be condemned.

TROUBLESHOOTING STRATEGY

M1543006900528

Use these steps to plan your diagnostic strategy. Fol-
low through with each step to ensure that you have 
exhausted all possible methods of finding a combina-
tion meter fault.
1. Gather information from the customer.

2. Verify that the condition described by the 

customer exists.

3. Find and repair the malfunction by following the 

symptom chart.

4. Verify that the malfunction has been eliminated.

SYMPTOM CHART

M1543007200771

SYMPTOM

INSPECTION 
PROCEDURE

REFERENCE PAGE

Speedometer does not work.

1

P.54A-33

Tachometer does not work.

2

P.54A-38

Fuel gauge does not work.

3

P.54A-42

Engine coolant temperature gauge does not work.

4

P.54A-50

Combination meter does not work.

5

P.54A-55

COMBINATION METERS ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-33

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Speedometer does not Work.

Speedometer Circuit

AC204395

CONNECTOR : C-08

AJ

C-08(B)

AC204170

CONNECTOR : D-03

DC

D-03(GR)

COMBINATION METERS ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-34

.

CIRCUIT OPERATION

• The ignition switch (IG1) circuit is the power sup-

ply for the speedometer and vehicle speed sen-
sor.

• The vehicle speed sensor is installed on the 

transmission. Four pulses are generated with one 
turn of the vehicle speed sensor shaft. These 
pulse signals are sent into the PCM and sent into 
the speedometer. The speedometer calculates 
the pulse signals, and operates the indicator. At 
the same time, the travel distance is calculated.

.

TECHNICAL DESCRIPTION (COMMENT)
The cause may be a faulty vehicle speed sensor cir-
cuit system or a faulty speedometer. The vehicle 
speed sensor is also used by the powertrain control 
module (PCM), the auto-cruise control-ECU.

.

TROUBLESHOOTING HINTS

• Malfunction of the vehicle speed sensor

• Malfunction of the combination meter (printed-cir-

cuit board or speedometer and tachometer)

• Malfunction of the PCM

• Malfunction of the auto-cruise control-ECU

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS 

Required Special Tools:

• MB991223: Harness Set

• MB991502: Scan Tool (MUT-II)

STEP 1. Check the speedometer by observing the other 
meters.
Check to see that the tachometer, fuel gauge and water ther-
mometer are operating normally.
Q:  Do all other meters operate?

 YES <other meters all operate> : Go to Step 2.
 NO <one of the meters do not operate> : Refer to 

INSPECTION PROCEDURE 5 

P.54A-55

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AC204171

CONNECTOR : D-116

AI

AC204176

CONNECTORS : E-111, E-114

E-111

AL

E-114