Mitsubishi Grandis. Manual - part 363

COMBINATION METER

CHASSIS ELECTRICAL

54A-71

NOTE: 

Also check intermediate connectors C-16, D-28 for 
loose, corroded, or damaged terminals, or terminals 
pushed back in the connector. If intermediate 
connector C-16, D-28 are damaged, repair or 
replace the connector.

Q: Is the wiring harness between combination meter 

connector C-02 (terminal 31) and fuel tank gauge 
unit connector D-07 (terminal 1) in good condition?

YES : 

Go to Step 7.

NO : 

Repair the harness, and then go to Step 10.

AC310613

AX

Connector: C-02 <LHD>

Harness side

40

20

28

8

34

14

37

17

38

39

1918

35

36

1615

31

11

33

13

32

12

30

10

29

9

23

3

27

7

26

6

24

4

25

5

21

1

22

2

AC310631AU

Connector: C-02 <RHD>

Harness side

40

20

28

8

34

14

37

17

38

39

1918

35

36

1615

31

11

33

13

32

12

30

10

29

9

23

3

27

7

26

6

24

4

25

5

21

1

22

2

AC310634AC

Connectors: D-07, D-28 <LHD>

Harness side

D-07

D-28

D-07

D-28

AC310206

AD

Connectors: D-07, D-28 <RHD>

Harness side

D-07

D-28

D-07

D-28

AC310615

AE

Connector: C-16 <LHD>

AC310631 AD

Connector: C-16 <RHD>

COMBINATION METER

CHASSIS ELECTRICAL

54A-72

Step 7. Check the wiring harness between fuel 
tank gauge unit connector D-07 (terminal 2) and 
fuel tank pump and gauge unit assembly 
connector D-15 (terminal 2).

Q: Is the wiring harness between fuel tank gauge unit 

connector D-07 (terminal 2) and fuel tank pump and 

gauge unit assembly connector D-15 (terminal 2) in 
good condition?

YES : 

Go to Step 9.

NO : 

Repair the harness, and then go to Step 10.

Step 8. MUT-III data list

Item No.8A: Fuel gauge (target value)

OK: Fuel gauge and MUT-III displayed values 
agree with each other.

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Go to Step 9.

Step 9. Retest the system.

Check that the fuel gauge works normally.

Q: Is the check result normal?

YES : 

The procedure is complete.

NO : 

Replace fuel tank pump and gauge unit 
assembly and then go to Step 10.

Step 10. Retest the system.

Check that the fuel gauge works normally.

Q: Is the check result normal?

YES : 

The procedure is complete.

NO : 

Replace fuel tank gauge unit and then go to 
Step 11.

Step 11. Retest the system.

Check that the fuel gauge works normally.

Q: Is the check result normal?

YES : 

The procedure is complete.

NO : 

Go to Step 1.

AC310633AF

Connector: D-07 <LHD>

Harness side

AC310205

AF

Harness side

Connector: D-07 <RHD>

AC310207

AG

Connector: D-15

D-15 (GR)

Harness side

COMBINATION METER

CHASSIS ELECTRICAL

54A-73

INSPECTION PROCEDURE 10: Engine Coolant Temperature Gauge does not Work (other meters 
work).

: LHD
: RHD

NOTE

COMBINATION
METER

CPU

ENGINE-ECU <M/T>
OR
ENGINE-A/T-ECU <M/T>

INPUT SIGNAL

DIAGNOSIS
CONNECTOR

FRONT 
SIDE

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

T/GA

Engine Coolant Temperature Gauge Circuit

ENGINE COOLANT TEMPERATURE
SENSOR

COMBINATION METER

CHASSIS ELECTRICAL

54A-74

COMMENTS ON TROUBLE SYMPTOM

If only the engine coolant temperature gauge does 
not operate, the engine-ECU <M/T> or 
engine-A/T-ECU <A/T> system, the combination 
meter, the wiring harness or its connector may be 
defective.

POSSIBLE CAUSES

• Damaged harness wires and connectors

• Malfunction of engine-ECU <M/T> or 

engine-A/T-ECU <A/T>

• Malfunction of combination meter

DIAGNOSTIC PROCEDURE

Step 1. MUT-III CAN bus diagnostics

Use the MUT-III to diagnose the CAN bus lines.

Q: Is the check result satisfactory?

YES : 

Go to Step 2.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54D, Diagnosis 

− Can Bus Diagnostic Table 

P.54D-16

). After diagnosing the CAN bus 

lines, go to Step 5. 

Step 2. MUT-III other system diagnosis code

Check if an MPI system diagnosis code is set.

Q: Is the diagnosis code set?

YES : 

Diagnose the MPI system (Refer to GROUP 

13A, Troubleshooting 

P.13A-20

). After 

diagnosing the MPI system, go to Step 5.

NO : 

Go to Step 3.

Step 3. MUT-III data list

• Item No.8C: Water thermometer (Refer to 

P.54A-74

.)

• Item No.8E: Water thermometer definite flag 

(Refer to 

P.54A-74

.)

Q: Is the check result satisfactory?

YES : 

Go to Step 4.

NO : 

Diagnose the MPI system (Refer to GROUP 
13A, Troubleshooting 

P.13A-20

). After 

diagnosing the MPI system, go to Step 5.

Step 4. MUT-III actuator test

• Item No.88: Water temperature gauge:  0 °C

• Item No.89: Water temperature gauge:  85 °C

• Item No.8A: Water temperature gauge:  126 °C

OK: The water thermometer operates.

Q: Is the check result satisfactory?

YES : 

Go to Step 5.

NO : 

Replace combination meter and then go to 
step 5.

Step 5. Retest the system.

Check to see that the engine coolant temperature 
gauge operates normally.

Q: Is the check result satisfactory?

YES : 

The procedure is complete.

NO : 

Go to Step 1.

SERVICE DATA REFERENCE TABLE

M1543007300422

The following items of the ECU input data can be 
read using MUT-III.

Item No.

Check items

Check conditions

Normal conditions

80

Speedometer

Perform a test run of the vehicle. Speedometer displayed value 

and MUT-III displayed value 
agree with each other.

*

81

Speedometer (target 
value)

Perform a test run of the vehicle. Speedometer displayed value 

and MUT-III displayed value 
agree with each other.

*

82

Vehicle speed sensor 
malfunction flag

Ignition switch: ON

Not set

83

Vehicle speed sensor 
definite flag

Ignition switch: ON

Set

84

Vehicle stopped flag

• Ignition switch: ON

• Vehicle speed 0 km/h 

Set

87

Tachometer

Start the engine.

Tachometer displayed value 
and MUT-III displayed value 
agree with each other.