Mitsubishi Pajero Pinin. Manual - part 346

CHASSIS ELECTRICAL – 

Multi-Center Display <High Grade>

54A-100

INSPECTION PROCEDURE 3

No display appears after the ignition key is turned to ACC, but TAPE/CD, UML switches can be
operative.

NG

YES

OK

Disconnect at the multi-center display
connector C-53.

D

Ignition switch: ACC

D

Measure waveforms of terminal (7),
(8), (17) of harness connector with
an oscilloscope.
OK: Hi: 4 – 5 V, Lo: 0 – 1 V

pulse signal

NG

Check the harness between audio C-54
and multi-center display B-09 connector.

NG

OK

OK

Replace the navigation unit.

Replace the multi-center display.

Replace the DIN cable

Check the DIN cable between audio
and navigation unit.

Repair

NG

Repair

OK

Turn off the ignition key and turn to ACC
position again. Does any screen appear
about 30 seconds after it?

NO

OK

Repair fuse or harness.

NG

Check connectors: C-11, C-53, C-54
and DIN connectors between audio and
navigation unit

Replace the multi-center display.

Measure at the multi-center display
connector C-53.

D

Ignition switch: ACC

D

Measure waveforms of terminal (1),
(2), (13) of multi-center display
connector.
OK: 0 – 2 Vpp 15.75kHz

video signal

OK

Measure at the multi-center display
connector C-52.

D

Ignition switch: ACC

D

Voltage between terminal (25), (26)
and body earth
OK: Battery voltage

NG

Check the harness between audio C-54
and multi-center display C-53 connector.

OK

OK

Replace the audio unit.

Replace the DIN cable

Check the DIN cable between audio
and navigation unit.

Repair

NG

NG

Replace the navigation unit.

OK

Disconnect DIN 20-pin connector from
the navigation unit.

D

Ignition switch: ACC

D

Measure waveforms of terminal (8),
(15), (17) of navigation unit
connector with an oscilloscope.
OK: 2 Vpp (AC) 15.75kHz video

signal

NG

CHASSIS ELECTRICAL – 

Multi-Center Display <High Grade>

54A-101

INSPECTION PROCEDURE 4

CD changer screen displays do not appear when TAPE/CD switches are operated.

Check connectors: C-54 and naviga-
tion unit DIN connector

NG

Repair

OK

Does radio reception occur and does
the screen change when the UML
switch is pressed

YES

Are the results of the hardware switch
checking using the audio switch check-
ing function (service function) normal?

NO

Replace the audio unit.

NO

Replace the navigation unit.

YES

Replace the CD changer.

INSPECTION PROCEDURE 5

GPS reception is not possible.

Is the vehicle in a good reception area?

NO

Move the vehicle to a good reception area.

YES

Turn the ignition switch to ACC, and then wait for about 5 minutes.
Is GPS reception still not possible?

NO

End (no abnormality)

YES

Replace the multi-center Display unit.

INSPECTION PROCEDURE 6

Outside air temperature data is not displayed.

OK

NO

YES

YES

NO

Check connectors: A-28, C-28, C-52

NG

Repair

OK

Carry out a wiring check (service func-
tion).
Does the message “Outside air temper-
ature sensor not connected” appear?

End (no abnormality).

Check the connections between the
multi-center display unit and the outside
air temperature sensor.

Replace the multi-center display.

NG

Check the harness between the multi-
center display unit and the outside air
temperature sensor, and replace if nec-
essary.

Is the selected model is correct?

Select correct model, and repeat wiring
check.

CHASSIS ELECTRICAL – 

Multi-Center Display <High Grade>

54A-102

INSPECTION PROCEDURE 7

Abnormal driving data displays.

D

Abnormal average fuel consumption (momentary fuel consumption) and average speed displays.

D

Abnormal cruising distance displays.

1.

When average fuel consumption (momentary fuel consumption) and average speed displays
are abnormal.

OK

YES

NO

Check connectors: C-02 <L.H. drive
vehicles>, C-52, C-74, C-76

NG

Repair

OK

Carry out a wiring and communication
check (service function).
Does the message “Engine-ECU not
connected” appear?

End (no abnormality).

Check the connections between the
multi-center display and the engine-
ECU.

Replace the multi-center display.

NG

Check the harness between the multi-
center display and the engine-ECU,
and replace if necessary.

NG

YES

Carry out a vehicle signals check (ser-
vice function).
Does the message “Key position : IG”
appear?

Check the harness between multi-cen-
ter display and the junction block, and
replace if necessary.

OK

Replace the multi-center display.

Measure at the multi-center display
connector C-52.

D

Connector disconnected.

D

Voltage between terminal (36) and
body earth
OK: Ignition switch ON: 

System voltage.
Ignition switch OFF: 0 – 1 V

NO

2.

When cruising distance display is abnormal.

YES

NO

Carry out troubleshooting according to
procedure 1.

Replace the multi-center display.

OK

OK

YES

Check the harness between multi-cen-
ter display and the fuel gauge unit, and
replace if necessary.

NG

Replace the fuel gauge unit.

Check the fuel gauge unit.
(Refer to P.54A-25.)

NG

Are the average fuel consumption and
average vehicle speed displayed nor-
mally?

Select correct model, and repeat wiring
check.

Is the selected model is correct?

NO

Measure at the multi-center display
connector C-52.

D

Connector disconnected.

D

Voltage between terminal (33) and
body earth
OK: 0.1 – 3.0 V

CHASSIS ELECTRICAL – 

Multi-Center Display <High Grade>

54A-103

INSPECTION PROCEDURE 8

Display moves about.
Screen colors do not match correctly.

OK

Replace the DIN connector.

Check connectors: C-50, C-52, C-53, C-54 and DIN connectors
between navigation unit and audio unit

NG

Repair

OK

Do red, blue and green colors appear in the monitor color bar
service function?

YES

End (no abnormality)

NO

Check the RGB wave pattern at terminal (1) of the C-53 multi-center
display harness-side connector.

OK

Replace the multi-center display unit.

NG

Check the RGB wave pattern at terminal (24) of the C-54 audio
unit harness-side connector.

OK

Check the harness between B-09 and B-04, and repair if necessary.

NG

Check the RGB wave pattern at the DIN connector at the audio
unit side of the cable between the audio unit and the navigation
unit.

OK

Replace the audio unit.

NG

Check the RGB wave pattern at the DIN connector at the navigation
unit side of the cable between the audio unit and the navigation
unit.

NG

Replace the navigation unit.

INSPECTION PROCEDURE 9

Daytime/nighttime display mode does not change in conjunction with lighting switch operations.

Check connector: C-52

NG

Repair

OK

Carry out a vehicle signal check (service function).
Does LIGHT SW: ON appear when the lighting switch is ON,
and LIGHT SW: OFF appear when the lighting switch is off?

YES

End

NO

Measure at the C-52 multi-center display unit connector.

D

Connector connected

D

Voltage between terminal (24) and body ground
OK:Hi: 10 V or higher, Lo: 0 – 1 V

OK

Replace the multi-center display unit.

NG

Check the harnesses between the multi-center display unit and
the ETACS-ECU <vehicles with DRL> or front-ECU (tail lamp
relay) <vehicles without DRL >, and replace if necessary.