Mitsubishi Lancer Evolution IX. Manual — part 276

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-41

INSPECTION PROCEDURE 3: Fuel gauge does not work.

AC504369AB

Fuel Gauge Circuit

COMBINATION
METER

CONTROL CIRCUIT

F/GA

R.H. drive vehicles

L.H. drive vehicles

FUEL
GAUGE
UNIT (SUB)

FUEL PUMP
AND GAUGE
UNIT (MAIN)

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

TECHNICAL DESCRIPTION (COMMENT)

If only the fuel gauge does not operate, fuel gauge
unit the combination meter, wiring harness or con-
nector(s) may be defective.

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-42

TROUBLESHOOTING HINTS

• Malfunction of the fuel gauge unit.

• The wiring harness or connectors may have

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

• Malfunction of the combination meter.

DIAGNOSIS PROCEDURE

STEP 1. Check the other meters.

Check to see that the speedometer, fuel gauge
and water thermometer operate 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

P.54A-48

.

STEP 2. Check fuel gauge unit (sub) connector
D-10 and fuel gauge umit (main) connector D-12
for loose, corroded or damaged terminals, or
terminals pushed back in the connector.

AC310465

AK

D-10

D-10

D-12(GR)

Harness side

D-12
Harness side

Connectors: D-10, D-12

Q: Are fuel gauge unit (sub) connector D-10 and fuel

gauge unit (main) connector D-12 in good
condition?
YES :

Go to Step 3.

NO :

Repair or replace the damage
component(s). The fuel gauge should work
normally.

STEP 3. Check the fuel gauge unit (sub) and fuel
gauge unit (main).

Check to see that the fuel gauge unit (sub) and
fuel gauge unit (main) are normal. Refer to

P.54A-54

.

Q: Are fuel gauge unit (sub) and fuel gauge unit

(main) normal?
Yes :

Go to Step 4.

NO :

Replace fuel gauge unit (sub) and fuel
gauge unit (main). The fuel gauge should
work normally.

STEP 4. Check the earth circuit to the fuel gauge
unit (main). Resistance measurement at fuel
gauge unit (main) connector D-12.

AC310465

AL

D-12(GR)

Harness side

Connector: D-12

(1) Disconnect fuel gauge unit (main) connector

D-12 and measure the resistance available at the
wiring harness side of the connector.

2

3

5

1

4

AC211567

Connector D-12
(Harness side)

AC

(2) Measure the resistance value between terminal 1

and earth.

OK: 2 ohms or less

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Go to Step 5.

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-43

STEP 5. Check the wiring harness between fuel
gauge unit (main) connector D-12 (terminal 1)
and earth.

AC310465

AL

D-12(GR)

Harness side

Connector: D-12

NOTE:

AC310463

AH

Harness side

Connector: D-34

Also check intermediate connector D-34 for loose,
corroded, or damaged terminals, or terminals pushed
back in the connector. If intermediate connector D-34
is damaged, repair or replace the connector.

Q: Is the wiring harness between fuel gauge unit

(main) connector D-12 (terminal 1) and earth in
good condition?
YES :

There is no action to be taken.

NO :

Repair the wiring harness. The fuel gauge
should work normally.

STEP 6. Check combination meter connector
C-02 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.

AC310446

Connector : C-02
<L.H. drive vehicles>

Harness side

BG

C-02(L)

AC310456

Connector : C-02
<R.H. drive vehicles>

Harness side

AV

C-02(L)

Q: Is combination meter connector C-02 in good

condition?
YES :

Go to Step 7.

NO :

Repair or replace the damaged
component(s). The fuel gauge should work
normally.

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-44

STEP 7. Check the wiring harness between fuel
gauge unit (sub) connector D-10 (terminal 1) and
combination meter connector C-02 (terminal 51).

AC310465

AM

Harness side

Connector: D-10

AC310446

Connector : C-02
<L.H. drive vehicles>

Harness side

BG

C-02(L)

AC310456

Connector : C-02
<R.H. drive vehicles>

Harness side

AV

C-02(L)

NOTE:

AC310452

CONNECTOR: C-113
<L.H. drive vehicles>

AZ

AC310457

AC310457

Connectors: C-23, C-112
<R.H. drive vehicles>

C-112(GR)

C-23(B)

C-23

C-112

AH

AC310463

AH

Harness side

Connector: D-34

Also check intermediate connectors C-112 <RH drive
vehicles>, C-113 <LH drive vehicles>, D-34 and joint
connector C-23 <RH drive vehicles> for loose, cor-
roded, or damaged terminals, or terminals pushed
back in the connector. If intermediate connector
C-112 <RH drive vehicles>, C-113 <LH drive vehi-
cles> or D-34 and joint connector C-23 <RH drive
vehicles> is damaged, repair or replace the connec-
tor.