Mitsubishi L200. Manual — part 737

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-315

SYMPTOM PROCEDURES

Inspection Procedure 1: No navigation screen is displayed.

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.)

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-316

COMMENTS ON TROUBLE SYMPTOM
When the ignition switch is turned to the ACC or ON
position, if the screen is not displayed at all, the
power supply circuit or multivision display may have
a problem.

PROBABLE CAUSES

• Malfunction of power supply circuit

• Malfunction of multivision display

Multivision Display Power Source Circuit

IGNITION
SWITCH (ACC)

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

FUSIBLE
LINK

20

NOTE

:LHD
:RHD

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-317

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-167, C-169, C-170
multivision display connector

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair or replace the damaged connector.

STEP 2. Resistance measurement at C-170
multivision display connector.

(1) Disconnect C-170 multivision display connector,

and measure the resistance available at the
wiring harness side of the connector.

(2) Measure the resistance between C-170

multivision display connector terminal 9 and
earth.

OK: Continuity exists (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Go to Step 3.

AC903856AS

Connector: C-167 <LHD>

C-167 (GR)

Harness side

AC903865

Harness side

AJ

Connector: C-167 <RHD>

AC903853

C-169 (GR)

Harness side

AU

Connectors: C-169, C-170 <LHD>

C-170 (GR)

Harness side

C-169

C-170

AC903868

C-169 (GR)

Harness side

BE

Connectors: C-169, C-170 <RHD>

C-170 (GR)

Harness side

C-169

C-170

AC903853

AV

Connector: C-170 <LHD>

C-170 (GR)

Harness side

AC903868

BF

Connector: C-170 <RHD>

C-170 (GR)

Harness side

AC310506KE

Connector C-170
(Harness side)

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-318

STEP 3. Check the wiring harness between C-170
multivision display connector terminal No.9 and
earth.

• Check the earth wires for open circuit.

NOTE:

Prior to the wiring harness inspection, joint connector
C-120, and repair if necessary.

Q: Is the check result normal?

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 :

Repair the wiring harness.

STEP 4. Resistance measurement at C-169
multivision display connector.

(1) Disconnect C-169 multivision display connector,

and measure the resistance available at the
wiring harness side of the connector.

(2) Measure the resistance between C-169

multivision display connector terminal 25 and
earth.

OK: Continuity exists (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Go to Step 5.

AC903853

AV

Connector: C-170 <LHD>

C-170 (GR)

Harness side

AC903868

BG

Connectors: C-120, C-170 <RHD>

C-120

C-120 (L)

C-170 (GR)

Harness side

C-170

AC903856 AT

Connector: C-120 <LHD>

C-120 (L)

AC903853

C-169 (GR)

Harness side

AW

Connector: C-169 <LHD>

AC903868

C-169 (GR)

Harness side

BH

Connector: C-169 <RHD>

AC310506KF

Connector C-169
(Harness side)