Mitsubishi Montero Sport (2004+). Manual — part 529

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54-103

INSPECTION PROCEDURE 3: Fuel Gauge does not Work.

JUNCTION
BLOCK

COMBINATION
METER

FUEL
LEVEL
SENSOR

F/GA

IGNITION
SWITCH (IG1)

Fuel Gauge Circuit

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

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CHASSIS ELECTRICAL

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.

CIRCUIT OPERATION

• The ignition switch (IG1) circuit is the power

source for the fuel gauge.

• The resistance value fluctuates causing the cir-

cuit current to fluctuate when the fuel level sensor
the float moves up and down.

• The fuel gauge moves the needle by the circuit

current.

.

TECHNICAL DESCRIPTION (COMMENT)
If the ignition switch (IG1) circuit is open, the gauge
needle will not move at all. If the ground circuit is
open, the gauge needle will move up to its extreme
position.

.

TROUBLESHOOTING

• Malfunction of the fuel level sensor

• Malfunction of the combination meter (printed-cir-

cuit board or fuel gauge assembly)

.

DIAGNOSIS

Required Special Tool:

• MB991223: Harness Set

STEP 1. Check the speedometer operation.
Q: Does the speedometer work normally?

YES : Go to Step 2.
NO : Refer to Inspection Procedure 1

P.54-77

.

AC003459

CONNECTORS: C-02, C-04

C-02

C-04

AB

AC003461AC

CONNECTOR: D-06

JUNCTION BLOCK (FRONT)

D-06

AC003457AE

CONNECTOR: D-08

JUNCTION BLOCK (REAR)

D-08

AC003470

AB

CONNECTORS: E-30, E-44

E-30

E-44

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

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CHASSIS ELECTRICAL

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STEP 2. Check the fuel level sensor signal circuit at fuel
level sensor connector E-30.

(1) Disconnect fuel level sensor connector E-30.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 2 and ground.

• The measured value should be approximately 5 volts

(battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES : Go to Step 5.
NO : Go to Step 3.

STEP 3. Check fuel level sensor connector E-30 and
combination meter connector C-02 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.

Q: Are fuel level sensor connector E-30 and combination

meter connector C-02 in good condition?
YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. The fuel gauge should

work normally.

AC201847

1

2

3

COMPONENT SIDE

AB

CONNECTOR: E-30

E-30

3

2

1

AC004166

AC

E-30 HARNESS CONNECTOR:
COMPONENT SIDE

AC201847

1

2

3

COMPONENT SIDE

AB

CONNECTOR: E-30

E-30

AC201839

CONNECTOR: C-02

AC

51

52

55 54 53

56

58

59

57

60

61

62

COMPONENT SIDE

C-02 (B)

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

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CHASSIS ELECTRICAL

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STEP 4. Check the harness wires between fuel level
sensor connector E-30 (terminal No.2) and combination
meter connector C-02 (terminal No.61).

NOTE: After checking intermediate connector E-44, check the
wire. If intermediate connector E-44 is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion

P.00E-2

.

Q: Are the harness wires between fuel level sensor

connector E-30 (terminal No.2) and combination meter
connector C-02 (terminal No.61) in good condition?
YES : Repair or replace the combination meter

(printed-circuit board or fuel gauge assembly). The
fuel gauge should work normally.

NO : Repair them. The fuel gauge should work normally.

AC201848

1

2

3

1920

6

17

7

5

15

14

16

8

18

3

1112

4

2

10

1

9

13

CONNECTORS: E-30, E-44

AB

E-30 COMPONENT SIDE

E-30

E-44

E-44

AC201839

CONNECTOR: C-02

AC

51

52

55 54 53

56

58

59

57

60

61

62

COMPONENT SIDE

C-02 (B)