Service manual

Electrical Service Manual V4.0
4
4-4
CURTIS 1227 CONTROLLER
CHECK VOLTAGE TO THE CONTROLLER
Machine will not
turn o
n
Attach a DC Volt
meter to t
he B+
and B
- terminals
on t
he controller
Was there
at least 23.5 v
olts
between
B+ and B-
Measure the
voltage at the
batter
y pack
Was there
at least 23.5 volt
s
at the battery
pack
Repair battery cables
or mail breaker
Charge or replace
batteries
Attach the (-) lead of a DC voltmeter to
the B(-) t
erminal. With the (+) lead back
probe Pin #15 at the 16 pin con
nector
on the Cur
tis control with the key switch
“ON”
Was there
within 0.2 V
olts of
batter
y voltage?
Replace the
con
troller
Attach the (-) lead of a DC voltmeter
to the B(-) terminal. With the (+) lead
measure the voltage at the RED wire
wire o
n the key switch with the switch
“ON
”
Was there
within 0.2 V
olts of
batter
y voltage?
Repair the red wire
between the switch and
controller
Attach the (-) lead of a DC voltmeter
to the B(-) t
erminal. With the (+) lead
measure t
he voltage at the YELLOW
wir
e on the key switch.
Was there
within 0.2 V
olts of
batter
y voltage?
Replace the key
sw
itch
Attach the (-) lead of a DC
voltmeter to the B(-) terminal.
With the (+) lead measure the
voltage at the YELLOW wire on
the (+) b
uss bar.
Was there
w
ithin 0.2 Volts of
battery voltage?
Call the factory
Check the power
connection
s to the Main
breaker