Mitsubishi Montero (2002-2004). Manual - part 513

RV METER

TSB Revision

CHASSIS ELECTRICAL

54A-223

STEP 8. Check the harness wires between RV meter 
connector D-07 (terminal 23 and 31) and outside air 
temperature sensor connector A-29 (terminal 1 and 2).
NOTE: After inspecting intermediate connector D-28 inspect 
the wires. If intermediate connector D-28 is damaged, repair or 
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion 

P.00E-2

.

Q: Are harness wires between RV meter connector D-07 

(terminal 23 and 31) and outside air temperature sensor 
connector A-29 (terminal 1 and 2) in good condition?
YES : Go to Step 9.
NO :  Repair or replace them. Refer to GROUP 00E, 

Harness Connector Inspection 

P.52A-18

.

STEP 9. Recheck for malfunction.
Q: Is a malfunction eliminated?

YES : If no malfunctions are not 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.00-6

.

NO :  Replace the RV meter.

AC204166

CONNECTOR : A-29

AP

A-29(B)

A-29(B)

1

2

HARNESS 
SIDE

AC204188

CONNECTORS: D-07, D-28

BV

D-28

D-28

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

HARNESS SIDE

D-07(B)

D-07(B)

22

23

30

31

25

26

33

34

32

24

28

3635

27

29

21

RV METER

TSB Revision

CHASSIS ELECTRICAL

54A-224

INSPECTION PROCEDURE 5: The Compass does not Indicate Normally. 

.

TECHNICAL DESCRIPTION (COMMENT)
The geomagnetism sensor integrated in the RV 
meter is abnormal, or it is seemed that the indication 
is affected by some nearby magnetized matter. 

.

TROUBLESHOOTING HINTS
Malfunction of the RV meter

.

DIAGNOSIS

STEP 1. Check the geomagnetism sensor mode in service 
mode. 
(1) When the adjusting switch is continuously pressed for more 

than five seconds, the reception sound (pip sound) is heard 
and at the same time the service function is activated to 
display the service mode screen. 

(2) Press the adjusting switch with the ignition switch at the 

"LOCK" (OFF) position. Then while keeping the switch on 
the pressed condition, turn the ignition switch to "ACC" 
position. 

(3) Check the geomagnetism sensor at the geomagnetism 

sensor mode (Refer to 

P.54A-233

.)

Q: Isn't there any abnormality on the geomagnetism 

sensor? 
YES : There is no action to be taken.
NO :  Step 2.

STEP 2.Check of own vehicle position.
Q: Is the geomagnetism stable at the place? 

YES : Go to Step 4.
NO :  Go to Step 3.

STEP 3. Move the vehicle to the geomagnetically stable 
location to re-check the geomagnetism.
Q: Isn't there any abnormality at the geomagnetism sensor 

mode? 
YES : There is no action to be taken.
NO :  Step 4.

STEP 4. Check of RV meter for magnetization. 
Q: Does the indication return to normal when the carrier 

antenna that is mounted on the body by a magnet, a 
magnet or metal existing nearby the RV meter is 
removed? 
YES : There is no action to be taken.
NO :  Replace the RV meter.

RV METER

TSB Revision

CHASSIS ELECTRICAL

54A-225

STEP 5. Recheck for malfunction.
Q: Is a malfunction eliminated?

YES : If no malfunctions are not 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.00-6

.

NO :  Replace the RV meter.

INSPECTION PROCEDURE 6: The Air-Conditioner Information is not Displayed. 

ACX01727AD

A/C-ECU Circuit

RV METER

TSB Revision

CHASSIS ELECTRICAL

54A-226

.

CIRCUIT OPERATION
The RV meter receives operation picture image (M-
BUS communication line) from the A/C-ECU and dis-
plays it. The RV meter receives operation picture 
image (M-BUS communication line) from the A/C-
ECU and displays it. 

.

TECHNICAL DESCRIPTION (COMMENT)
If there is a problem on the picture display of RV 
meter even though the function of A/C operates nor-
mally, it may be an abnormality on the M-BUS com-
munication line. When there is a problem on the 
function itself, the abnormality of A/C-ECU is consid-
ered to be the cause. 

.

TROUBLESHOOTING HINTS

• Malfunction of the RV meter

• Damaged harness wires and connectors

.

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991502: Scan Tool (MUT-II)

STEP 1. Check the communication and connection of the 
service function (M-BUS).
(1) Press the adjusting switch with the ignition switch at the 

"LOCK" (OFF) position. Then while keeping the switch on 
the pressed condition, turn the ignition switch to " ACC" 
position.

(2) When the adjusting switch is continuously pressed for more 

than five seconds, the reception sound (pip sound) is heard 
and at the same time the service function is activated to 
display the service mode screen.

(3) Check the communication and connection 

P.54A-189

.

Q: Which of the following M-BUS is indicated? 

" E1 " (Communication error)  : Go to Step 2.
" E2 " (Open circuit or not connected)  : Go to Step 3.
OK :  Go to Step 4.

AC204170

CONNECTORS : D-08, D-23

DM

D-08(B)

D-23(B)