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.
To Next Page
Loading...
