Mitsubishi Pajero Pinin 1999 - Page 827

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