Mitsubishi L200. Manual — part 752

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-375

STEP 6. Temporarily replace the multivision
display, and check the trouble symptom.
After temporary replacement of the multivision dis-
play, check if the DVD image is displayed.

Q: Is the check result normal?

YES :

Replace the multivision display.

NO :

Replace the DVD.

Inspection Procedure 11: The picture and sound of external input are not played.

CAUTION

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

Audio and Video Adapter Communication Circuit

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

MULTIVISION DISPLAY

AUDIO AND VIDEO ADAPTER

NOTE

: RHD

LHD

:

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-376

COMMENTS ON TROUBLE SYMPTOM
The wiring harness between the audio and video
adapter and the multivision display, the audio and
video adapter or the multivision display may have a
problem.
NOTE: The connected equipment side or the con-
nection from the audio and video adapter to the
equipment may have a problem. Therefore, check
that the operation status and the connecting method
of the equipment connected to the multivision display
and audio and video adapter before performing the
diagnosis.

PROBABLE CAUSES

• The multivision display may be defective

• The audio and video adaptor may be defective

• Damaged harness wires and connectors

DIAGNOSIS

STEP 1. Check of DVD picture
Check that the DVD picture is displayed normally.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Perform the troubleshooting related to the
MMCS (Refer to

P.54A-314

).

STEP 2. Check the audio and video adapter.
Check the audio and video adapter.(Refer to

P.54A-

381

)

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the audio and video adapter.

STEP 3. Connector check: C-167 multivision
display connector, D-40 audio and video adaptor
connector

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the connector concerned.

AC903856AS

Connector: C-167 <LHD>

C-167 (GR)

Harness side

AC903865

Harness side

AJ

Connector: C-167 <RHD>

AC903885

Connector: D-40

AJ

Harness side

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-377

STEP 4. Check the wiring harness between C-167
multivision display connector terminal No.37, 38,
39, 53, 54 and D-40 audio and video adaptor
connector terminal No. 1, 6, 5, 2, 4.

• Check the communication lines for open circuit

and short circuit.

NOTE:

Prior to the wiring harness inspection, check interme-
diate connectors C-15 and D-39, and repair if neces-
sary.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the wiring harness.

STEP 5. Temporarily replace the multivision
display, and check the trouble symptom.
Check that the external input is normal.

Q: Is the check result normal?

YES :

Replace the multivision display.

NO :

Replace the audio and video adapter.

MAIN UNIT TERMINAL VOLTAGE

M1546003300537

MULTIVISION DISPLAY

AC903856AS

Connector: C-167 <LHD>

C-167 (GR)

Harness side

AC903865

Harness side

AJ

Connector: C-167 <RHD>

AC901129AK

Connector: D-40

Harness side

AC903853

AT

Connector: C-15 <LHD>

AC903868

Connector: C-15 <RHD>

BO

AC611894AF

C-168

C-169

C-170

C-167

MITSUBISHI MULTI COMMUNICATION SYSTEM (MMCS)

CHASSIS ELECTRICAL

54A-378

C-168

C-167

C-169

C-170

Terminal
No.

Signal symbol

Check condition

Terminal voltage

71

ANTENNA POWER ON

Ignition switch: ACC position

System voltage (DC)

72

AMP POWER ON

Ignition switch: ACC position

1 V or less

Terminal
No.

Signal symbol

Check condition

Terminal voltage

37

VIDEO2-IN

When the image is input

1Vp-p (AC)

38

VIDEO2-R

When the sound is input

1.2Vrms (AC)

39

SEIELD (VIDEO2-L/R)

Always

1 V or less

43

AUDIO REMOTE

Ignition switch: ACC position

3.3V (DC)

53

SEIELD (VIDEO2-IN)

Always

Approximately 0 V

54

VIDEO2-L

When the sound is input

1.2Vrms (AC)

55

VIDEO2 DETECT

Always

1 V or less

59

SEIELD (STEERING REMO)

Always

1V or less

Terminal
No.

Signal symbol

Check condition

Terminal voltage

21

BATTERY (+)

Always

System voltage (DC)

24

PS-R

Sift lever <M/T> or selector
lever <A/T>: R position
Ignition switch: ON position

System voltage (DC)

Sift lever <M/T> or selector
lever <A/T>: Except R position
Ignition switch: ON position

1V or less

25

GND

Always

1V or less

Terminal
No.

Signal symbol

Check condition

Terminal voltage

2

SPEAKER RL (

−)

When the sound is output

0 - System voltage (AC)

3

SPEAKER FL (

−)

When the sound is output

0 - System voltage (AC)

7

SPEAKER FR (

−)

When the sound is output

0 - System voltage (AC)

8

SPEAKER RR (

−)

When the sound is output

0 - System voltage (AC)

9

MAIN GND

Always

1V or less

10

ILLUMINATION (+)

Tail lamp switch: ON

System voltage (DC)

11

SPEAKER RL (+)

When the sound is output

0 - System voltage (AC)

12

SPEAKER FL (+)

When the sound is output

0 - System voltage (AC)

13

VSS

Ignition switch: ON

• Running

0 - System voltage (pulse)

14

ACCESSORY (+)

Ignition switch: ACC position

System voltage (DC)