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69
9
10.
10.15.
15.8
8 Pu
Pump r
mp regul
egulator
ator st
statu
atus in
s indic
dicato
atorr
The pump regulator status lamp flashes
The pump regulator status lamp flashes on and off
on and off
..
7. Look for the break/short circuit in
7. Look for the break/short circuit in
the cables between the pump regulator
the cables between the pump regulator
and the pump motor M2.4 E2 K1.5 and
and the pump motor M2.4 E2 K1.5 and
M2.3 E2 K1.6 and between M2.3 and
M2.3 E2 K1.6 and between M2.3 and
M2.4. Both connectors are pulled out
M2.4. Both connectors are pulled out
of their connections on the motor and
of their connections on the motor and
pump reg
pump regulator
ulator..
8. Is the voltage between the pump
8. Is the voltage between the pump
regulator and the contact points E2
regulator and the contact points E2
K1.3 and E2 K1.4 approx. 12V?
K1.3 and E2 K1.4 approx. 12V?
Y
Yes
es
Check that there is not a break or short
Check that there is not a break or short
circuit in the cables between the motor
circuit in the cables between the motor
contact and the pump regulator
contact and the pump regulator
contact, both connectors are pulled out
contact, both connectors are pulled out
of their connections. Measure between
of their connections. Measure between
E2 K1.3 - E2 K1.4 and between M2.1-
E2 K1.3 - E2 K1.4 and between M2.1-
E2K1.3 and M2.2 - E2 K1.4.
E2K1.3 and M2.2 - E2 K1.4.
No
No
9. Change the pump regulator.
9. Change the pump regulator.
1. The truck must be logged on.
1. The truck must be logged on.
Does the status lamp flash?
Does the status lamp flash?
Y
Yes
es
Look for an error code and go to the
Look for an error code and go to the
related trouble shooting chart.
related trouble shooting chart.
No
No
2. Is there a supply voltage B+ 48V to
2. Is there a supply voltage B+ 48V to
the regulator's connector E2 K1.1
the regulator's connector E2 K1.1
šš
No
No
Go to point 5 below.
Go to point 5 below.
Y
Yes
es
3. Battery voltage low?
3. Battery voltage low?
Y
Yes
es
Charge and check
Charge and check the battery.
the battery.
No
No
4. Change the pump regulator.
4. Change the pump regulator.
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