Volvo Penta D1-13 Workshop Manual page 29

a
VO
1
R
2
W
3
SB
4
Y
5
6
MDI
d
P0008425
a Connector, button panel
b Switch
c Neutral switch
d Buzzer
e Button panel
47704383 06-2013 © AB VOLVO PENTA
e
b
1 A
2
B
3
C
4
D
5
E
c
Button panel fault
Tachometer
None.
Alarm display
None.
Symptom
No system response when a button is pushed.
Circuit description
The button panel contains of four buttons: stop button,
on/off button, acknowledge/dimmer button, start/ pre-
heat button. The buttons functions like switches and
closes to battery negative when activated. The power
switch must be closed before the system can be acti-
vated. The neutral switch must be closed before the
engine can be started.
A Stop
B On/off
C Ack./dimmer
D Battery negative
E Start/preheat
Fault tracing
Fault condition
The button panel does not function properly.
Possible reason
• The power switch is disconnected.
• The multilink connector and the button panel con-
nector at the MDI have been switched.
Open circuit in the wiring between the button panel
•
and the MDI.
Short circuit in the wiring between the button panel
•
and the MDI.
• Defective button panel.
30-2 Fault Tracing
27