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.