Mitsubishi Lancer Evolution IX. Manual — part 274

MB991223

A

D

C

B

AZ

DO NOT USE

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-33

TROUBLESHOOTING

SYMPTOM CHART

M1543007201280

Symptom

Inspection
procedure No.

Reference page

Speedometer does not work.

1

P.54A-34

Tachometer does not work.

2

P.54A-38

Fuel gauge does not work.

3

P.54A-41

Engine coolant temperature gauge does not work.

4

P.54A-45

Combination meters does not work.

5

P.54A-48

MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222

Harness set
A: Test harness
B: LED harness
C: LED harness

adapter

D: Probe

Making voltage and
resistance measurements
during troubleshooting

A: Connect pin contact

pressure inspection

B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester

connection

MB992006

MB992006

Extra fine probe

Continuity check and voltage
measurement at harness wire
or connector

Tool

Number

Name

Use

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-34

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Speedometer does not work.

AC504334

Speedometer Circuit

IGNITION
SWITCH (IG1)

FUSIBLE
LINK

1

COMBINATION
METER

SPEED

CONTROL CIRCUIT

VEHICLE
SPEED
SENSOR

DIAGNOSIS
CONNECTOR

FRONT SIDE

NOTE

: L.H. drive vehicles
: R.H. drive vehicles

Wire colour code
B : Black LG : Light green G : Green L : Blue
W : White Y : Yellow SB : Sky blue BR : Brown
O : Orange GR : Gray R : Red P : Pink V : Violet

AB

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-35

TECHNICAL DESCRIPTION (COMMENT)

The cause may be a faulty vehicle speed sensor cir-
cuit system or a faulty speedometer. Vehicle speed
sensor is also used by the engine-ECU.

TROUBLESHOOTING HINTS

• Malfunction of the vehicle speed sensor

• Malfunction of the engine-ECU

• Malfunction of the combination meter assembly

• The wiring harness or connectors may have

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

DIAGNOSIS PROCEDURE

STEP 1. Check with other meter.

AC304777

Steering shaft

AB

MB991502

<Using the M.U.T.-II>

AC210056

MB991911

16-PIN

MB991827

MB991824

AF

<Using the M.U.T.-III>

Check to see that the tachometer, fuel gauge and
water thermometer are operating normally.

Q: Do all other meters operate?

YES <other meters all operate.> :

Go to Step 2.

NO <one or more of the other meters does not
operate.> :

Refer to INSPECTION PROCEDURE

5

P.54A-48

STEP 2. Check the vehicle speed sensor.
(M.U.T.-II/III MPI diagnosis code)

AC304777

Steering shaft

AB

MB991502

<Using the M.U.T.-II>

AC210056

MB991911

16-PIN

MB991827

MB991824

AF

<Using the M.U.T.-III>

(1) Connect M.U.T.-II/III to the diagnosis connector.
(2) Turn the ignition switch to the "ON" position.
(3) Read the MPI system diagnosis code.

Q: Is MPI system diagnosis code P0500 set?

YES :

Refer to GROUP 13A

− Troubleshooting

P.13A-372

.

NO :

Go to Step 3.

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-36

STEP 3. Check combination meter connector
C-01 and vehicle speed sensor connector B-04
for loose, corroded or damaged terminals, or
terminals pushed back in the connector.

AC310439

Connector : B-04

AG

Harness side

B-04(B)

1

2

3

AC310446

Connector: C-01
<L.H. drive vehicles>

Harness side

BF

AC310456

Connector: C-01
<R.H. drive vehicles>

Harness side

AU

Q: Are combination meter connector C-01 and

vehicle speed sensor connector B-04 in good
condition?
YES :

Go to Step 4.

NO :

Repair or replace the damage
component(s).