Mitsubishi L200. Manual - part 750

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-367

YES (OK for all) : 

Go to Step 6.

NO (GPS is not OK) : 

Go to Step 2.

NO (The vehicles speed sensor is not OK, or 
vehicle speed pulse does not increase after 
starting from a standstill) : 

Go to Step 3.

NO (Gyro sensor is not OK) : 

Go to Step 6.

STEP 2. GPS reception check
(1) Start the multivision display.

(2) Press the (1).

(3) Select (2).

(4) Check if the GPS signals are received.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Perform Inspection Procedure 7 "GPS 
signal cannot be received" (Refer to 

P.54A-

370

.), and then go to Step 6.   

STEP 3. Check the speedometer.
Check whether the speedometer works normally. 
(Refer to 

P.54A-87

.)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Diagnose the combination meter. (Refer to 
Combination meter 

− Troubleshooting 

P.54A-46

.)

STEP 4. Connector check: C-127 joint connector, 
C-170 multivision display connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the defective connector.

STEP 5. Check the wiring harness between C-127 
joint connector terminal No.17 and C-170 
multivision display connector terminal No.13.

• Check the communication line for open circuit 

and short circuit.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the wiring harness.

STEP 6. Check of the troubles
Drive the vehicle for some time with the GPS signals 
being received, and check if the own vehicle mark is 
dislocated.

Q: Is the check result normal?

AC804201

(1)

AB

AC804200

AB

(2)

AC803908

AC903853

Connectors: C-127, C-170 <LHD>

AX

C-127 (GR)

C-127

C-170 (GR)

Harness side

C-170

AC903853

Connectors: C-127, C-170 <LHD>

AX

C-127 (GR)

C-127

C-170 (GR)

Harness side

C-170

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-368

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the multivision display.

Inspection Procedure 6: The radio broadcasting can not be received.

CAUTION

Whenever the multivision display is replaced, 
ensure that the power supply circuit and the 
earthing circuit are normal. (Check that the volt-
age is 10 V or more.)

COMMENTS ON TROUBLE SYMPTOM
In case of FM/MW/LM radio broadcasting cannot be 
received., antenna rod, antenna base, antenna 
fender or multivision display may have a problem.
NOTE: The radio wave may not be received if the 
vehicle is placed in the area which is exposed to a 
special electric field. Thus, check that the radio 
broadcasting can be received using the radio of 
another vehicle before carrying out diagnosis.

PROBABLE CAUSES

• Malfunctions of antenna rod

• Malfunctions of antenna base

• Malfunctions of antenna feeder

• Malfunctions of multivision display

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the state of the antenna rod and 
antenna base.

Q: Is the antenna assembled?

ROOF ANTENNA

ANTENNA 

FEEDER CABLE

ANTENNA AMP

Antenna Circuit

MULTIVISION DISPLAY

Wire colour code 
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue 
BR : Brown     O : Orange     GR : Grey     R : Red     P : Pink     V : Violet     PU : Purple     SI : Silver

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-369

YES : 

Go to Step 2.

NO : 

Assemble antenna rod and antenna base.

STEP 2. Check to see if inspections are taking 
place is an area exposed to special electric 
fields.

Q: Is the reception area exposed to special electric 

fields?
YES : 

Go to Step 3.

NO : 

Go to Step 4.

STEP 3. Move the vehicle and check the radio.
Move the vehicle to a good reception area that is not 
exposed to special electric fields.

Q: Is the check result normal?

YES : 

Diagnosis complete.

NO : 

Go to Step 4.

STEP 4. Check if there is any damage to the 
antenna rod, antenna base and antenna fender.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the antenna rod, antenna base and 
antenna fender.

STEP 5. Check the connection of the antenna 
fender’s plug and multivision display.

Q: Is the antenna fender’s plug thoroughly connected 

to the multivision display?
YES : 

Go to Step 6.

NO : 

Thoroughly connect the antenna fender’s 
plug and the multivision display.

STEP 6. Connector check: C-168 multivision 
display connector, C-60-1 antenna amp (antenna 
base) connector

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair or replace the damaged connector.

STEP 7. Check the antenna feeder between C-168 
multivision display connector terminal No.71 and 
C-60-1 antenna amp (antenna base) connector 
terminal No.1.

• Check the communication line for open circuit 

and short circuit.

NOTE: Prior to the wiring harness inspection, inter-
mediate connector C-60, and repair if necessary.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the antenna feeder. 

STEP 8. Substitute a known good multivision 
display, and check the trouble symptom.

Q: Is the check result normal?

YES : 

Replace the multivision display.

NO : 

Either repair or replace the antenna rod and 
antenna base.

AC903856 AV

Connectors: C-60-1, C-168

C-168 (G)

Harness side

Harness side

C-168

C-60-1

C-60-1

AC903856 AW

Connectors: C-60, C-60-1, C-168

C-168 (G)

Harness side

Harness side

C-168

C-60, 
C-60-1

C-60-1

C-60

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-370

Inspection Procedure 7: GPS signal cannot be received. <Except vehicles for RUSSIA>

CAUTION

Whenever the multivision display is replaced, 
ensure that the power supply circuit and the 
earthing circuit are normal. (Check that the volt-
age is 10 V or more.)
COMMENTS ON TROUBLE SYMPTOM
The GPS antenna or the multivision display may be 
defective.

PROBABLE CAUSES

• Malfunctions of GPS antenna

• Malfunctions of multivision display

DIAGNOSIS PROCEDURE

STEP 1. Confirmation in MMCS service mode
Perform "Network/Connect Line Check" in the 
MMCS service mode to check that the communica-
tion and wire connection with the GPS antenna are 
OK. (Refer to 

P.54A-305

.)

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Go to Step 4.

STEP 2. Check for the vehicle's current position.
Check that the vehicle is parked on a well-ventilated 
place.

Q: Is the vehicle parked on a well-ventilated place?

YES : 

Go to Step 3.

NO : 

Move the vehicle to a well-ventilated area.

STEP 3. Confirming GPS signal reception
(1) Start the multivision display.
(2) Press the [INFO] button.
(3) Select [Vehicle Position].
(4) Wait for 5 minutes, and then check whether GPS 

signal can be received.

Q: Can GPS signal be received?

YES : 

The diagnosis is complete. (There is no 

failure)

NO : 

Go to Step 4.

STEP 4. Substitute a known good multivision 
display, and check the trouble symptom.
(1) Temporarily replace the multivision display.
(2) Start the multivision display.
(3) Press the [INFO] button.
(4) Select [Vehicle Position].
(5) Check if the GPS signals are being received after 

5 minutes have elapsed.

Q: Is the check result normal?

YES : 

Replace the multivision display.

NO : 

Replace the GPS antenna.

Inspection Procedure 7: GPS signal can not be received. <Vehicles for RUSSIA>

CAUTION

Whenever the multivision display is replaced, 
ensure that the power supply circuit and the 
earthing circuit are normal. (Check that the volt-
age is 10 V or more.)
COMMENTS ON TROUBLE SYMPTOM
The GPS antenna or the multivision display may be 
defective.

PROBABLE CAUSES

• Malfunctions of GPS antenna

• Malfunctions of multivision display

DIAGNOSIS PROCEDURE

STEP 1. Confirmation in MMCS service mode
Perform "Network/Connect Line Check" in the 
MMCS service mode to check that the communica-
tion and wire connection with the GPS antenna are 
OK. (Refer to 

P.54A-305

.)

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Go to Step 4.

STEP 2. Check for the vehicle's current position.
Check that the vehicle is parked on a well-ventilated 
place.

Q: Is the vehicle parked on a well-ventilated place?

YES : 

Go to Step 3.

NO : 

Move the vehicle to a well-ventilated area.