Mitsubishi 380. Manual — part 894

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-110

STEP 8. Check the wiring harness between combination
meter connector C-101 (terminal 13) and fuel level sensor
(sub) connector D-17 (terminal 2).

NOTE: Also check intermediate connectors C-28 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-28 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection

P.00E-2

.

Q: Is the wiring harness between combination meter

connector C-101 (terminal 13) and fuel level sensor
(sub) connector D-17 (terminal 2) in good condition?
YES : Go to Step 9.
NO : Repair the wiring harness. The range to empty display

should now operate normally.

AC305268

AQ

CONNECTOR: D-17

HARNESS SIDE

54DB031A

CONNECTORS: C-28, C-101

C-28

C-101

C-28

HARNESS SIDE

C-101

9

21

33

35

24

12

3 4

7

8

5 6

39

28

41

30

18

4243

31

1920

32

40

29

1617

38

27

15

37

36

26

14

13

25

2

1

34

23

11

10

22

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-111

STEP 9. Check fuel pump module connector D-18 and fuel
level sensor (sub) connector D-17 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is fuel pump module connector D-18 and fuel level

sensor (sub) connector D-17 in good condition?
YES : Go to Step 10.
NO : Repair or replace the component(s). Refer to GROUP

00E, Harness Connector Inspection

P.00E-2

. The

range to empty display should now operate normally.

STEP 10. Check the wiring harness between fuel pump
module connector D-18 (terminal 2) and fuel level sensor
(sub) connector D-17 (terminal 1).
Q: Is the wiring harness between fuel pump module

connector D-18 (terminal 2) and fuel level sensor (sub)
connector D-17 (terminal 1) in good condition?
YES : Go to Step 11.
NO : Repair the wiring harness. The range to empty display

should now operate normally.

AC305269

D-17

D-18 (GR)

AE

CONNECTORS: D-17, D-18

HARNESS SIDE

D-17

HARNESS SIDE

D-18

AC305269

D-17

D-18 (GR)

AE

CONNECTORS: D-17, D-18

HARNESS SIDE

D-17

HARNESS SIDE

D-18

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-112

STEP11. Retest the system.
Check that the range to empty display works normally.

Q: Is the Range to empty display reading normal?

YES : The procedure is complete. (If no malfunctions are

found in all steps, an intermittent malfunction is
suspected. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunction

P.00-14

).

NO : Replace the combination meter.

COMBINATION METER ASSEMBLY

CHASSIS ELECTRICAL

54A-113

INSPECTION PROCEDURE 3: Total fuel used does not operate (increase). INSPECTION PROCEDURE
4: Total fuel used diplays abnormally low/high value. INSPECTION PROCEDURE 5: Average fuel
always displays "0.1" litres/ 100km. INSPECTION PROCEDURE 6: Average fuel displays abnormally
low/high value.INSPECTION PROCEDURE 7: Instant fuel always displays "0.1" litres/ 100km.
INJECTOR PROCEDURE 8: Instant fuel displays abnormally low/high result.

.

CIRCUIT OPERATION

• The injector power is supplied from the MPI relay

(terminal No. 4).

• The ENGINE-ECU controls the injectors by turn-

ing the power transistor in the ECU "ON" and
"OFF".

• The injectors sends a signal to the Engine-ECU

which in turn sends a signal to the combination
meter via the CAN bus line (every 0.5 of a sec-
ond).

.

TECHNICAL DESCRIPTION

• The amount of fuel injected by the injectors is

controlled by the amount of continuity time the
coil is grounded by the ECU.

• A surge voltage is generated when the injectors

are driven and the current flowing to the injector
coil is shut off.

• The ENGINE-ECU checks this surge voltage.

.

AK303102

CONNECTOR: B-30

B-30 (GR)

AB

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

AK303014

CONNECTOR: B-17X

MFI RELAY

MFI RELAY

FRONT OF VEHICLE

B-17X

AB

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

54DB019A

CONNECTOR: C-101

HARNESS SIDE