Cushman HAULER 800 2012 Technician's Repair And Service Manual page 131

Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
POWER SUPPLY
Tool List
DVOM ......................................................................... 1
1. Check For Loose or Bare Wires
Check for loose wires at each terminal connection
and for worn insulation or bare wires touching the
frame. Bare wires may cause a short circuit.
NOTICE
If any DVOM readings indicate a faulty wire, it is recom-
mended that the condition of the terminals and wire junction
be examined. A faulty wire should be replaced with one of the
same gauge and color and wired between the correct compo-
nents and wire tied to the harness bundle. The faulty wire
should be cut back close to the harness and the ends pro-
tected with vinyl electrical tape.
2. Check Battery Condition
Check for adequate battery volts (nominal 48 VDC)
by setting DVOM to 50 VDC range and place the red
probe (+) on the battery post with the green wire
attached. Place the black probe (-) on the most nega-
tive battery post with the blue wire attached. A read-
ing of 47 VDC or greater indicates adequate battery
condition. No reading indicates (a) a poor connection
between the probes and the battery terminals; (b) a
faulty DVOM. A voltage reading below 47 volts indi-
cates poor battery condition and the vehicle should
be recharged before proceeding with the test.
NOTICE
Due to the resistance of the wires involved within the harness,
voltage readings may be somewhat lower than battery volt-
age. A reading of 1 volt below battery voltage is acceptable.
3. Check Converter Supply
Firmly attach the black probe (-) to the most negative
Qty.
battery post with the blue wire attached and the red
probe (+) to the green terminal at the fuse block. A
reading of 13.5 +/- 0.5 voltage indicates that the
power wire is in good condition.
The green wire supplies power to the entire fuse block.
4. Check Fuse
Place the red probe (+) to each wire terminal con-
nected to the other side of the fuse from the green
wire while keeping the black probe (-) on the most
negative battery post. A reading of battery voltage
indicates that the fuse is in good condition. No read-
ing indicates a faulty fuse; replace with a good 15
amp fuse.
MAIN & ACCESSORY WIRING
After determining that there is power to the fuse panel,
and the fuse is good, continue checking the circuit using
the procedures previously used to check the power sup-
ply, i.e. loose or rusted connections, bare wires, conti-
nuity of the wiring from terminal to terminal, operating
condition of switch, etc.
Use the wiring diagram (Ref. Fig. 2 on Page J-2), (Ref.
Fig. 3 on Page J-3) and (Ref. Fig. 4 on Page J-4) to
check correct wiring and wire routing. If there is power
at the fuse end of the wire, there must also be power at
the other end of the wire at the switch or electrical
accessory, and eventually at the ground connection.
Electricity must flow from the fuse panel through the full
length of the circuit to the ground connection. Any inter-
ruption of electricity flow must be corrected, whether by
repairing or replacing the wire, the switch or accessory.
Repair and Service Manual
ELECTRICAL SYSTEM
NOTICE
B
B
Page J-5