Volvo Penta D1-13 Workshop Manual page 37

V
BAT-
P0008431
47704383 06-2013 © AB VOLVO PENTA
Check MDI output for preheat function
Tools:
88890074 Multimeter
1
2
3
4
Measurement points
(start/preheat button not
activated)
MDI preheat output - bat-
tery negative
(start/preheat button acti-
vated)
P R E
H E A
T
B A T
T
MDI preheat output - bat-
S T A
R T
tery negative
5
NOTICE! Cut the current with the main switch.
Loosen the rubber protection hood over the pre-
heat output at the MDI to be able to do a meas-
urement.
Use 88890074 Multimeter for voltage measure-
ment.
Turn the main switch on and press the on button
on the button panel. If the coolant temperature is
above 50 °C (122 °F) the prehating is not acti-
vated.
Nominal value
U ≈ 0 V
U ≈ Battery voltage
Also do the above measurement at the glowing
plugs to verify that there is no open circuit to the
glowing plugs.
30-2 Fault Tracing
35