CHASSIS ELECTRICAL ± Multi-center Display <Middle Grade>
54A-75
INSPECTION PROCEDURE 2
TAPE/CD, UML switches do not work.
NO
NG
OK
Check the audio unit connected in sys-
tem on service mode.
Is it available to check?
OK
OK
Replace the audio unit
NG
OK
Check the connectors: C-53, C-54
NG
Check the reoccurrence of symptom
when DIN cable is out.
NG
OK
YES
Replace the multi-center display.
Measure at multi center display connec-
tor C-54.
D Ignition switch: ACC
D Voltage between terminal (10), (11)
and body earth
OK: System voltage
Repair the harness.
Replace the multi-center display unit.
Are there any audio set as option?
NG
Check the DIN cable.
OK
Replace the option audio.
NG
Check cassette function with LOAD-
ING/EJECT
OK
Replace the key panel and repair
Replace the audio unit.
Check the detachable key panel.
(dust or broken button etc.)
NG
OK
Check output signals on the connector
in multi-center display unit side.
D Disconnect C-53 connector for
M-BUS
D Monitor output signals on 7, 8, 17
terminal of C-53 connector.
NG
Repair the harness.
OK
Check output signals on the connector
in audio unit side.
D Disconnect C-54 connector for
M-BUS
D Monitor output signals on 21, 22,
29 terminal of C-54 connector.
Replace the audio unit.
OK
Replace the DIN cable.
To Next Page
Loading...
