ELECTRICAL SYSTEM
10C-6
WIRE CONTINUITY TEST
Set the multimeter to the ohm scale and touch the
meter leads together, the meter should read 00.0 and
the meter alarm should be audible. This validates the
meter and meter battery.
Separate the leads of the meter and note the meter
reading. Different meters will show different types of
readings for an infinity reading.
1. Identify and locate the wire to be checked on the
appropriate wiring diagram (Section 10L).
2. Touch the leads to the end of the wire, there
should be a reading (continuity) on the multimeter
and an alarm (Figure 10C-2).
Figure 10C-2. Continuity/Resistance Test
RESISTANCE TEST
Electrical resistance is the ability of a material to
oppose the flow of current. In some situations resis-
tance is desired, such as in a resistor. In other situa-
tions resistance can mean a failure in a circuit.
Resistance is measured in Ohms
. Using a multim-
eter the resistance in a circuit can be tested
(Figure 10C-2).
1. Set the multimeter to the
(Ohms) scale.
2. Connect the positive (+POS) lead to one terminal
on the wire or switch. Connect the (-NEG) lead to
the other end of the wire or switch terminal.
3. Read the
(Ohms) on the multimeter.
Contacts of a switch or a wire should have less
that 0.5
(Ohms) reading.
If
(Ohms) readings are above 0.5 the switch or
wire is questionable.
TROUBLESHOOTING
The following precautions will reduce electrical prob-
lems:
1. Make sure all terminals and connections are clean
and tight.
2. Check the interlock system, fuses, and circuit
breakers regularly. If the interlock system does not
function properly and the problem cannot be cor-
rected, contact an authorized Jacobsen dealer.
3. Keep the wiring harness and individual wires away
from moving parts to prevent damage.
4. Make sure the seat switch harness is connected
to the main wiring harness.
5. Check the battery and charging circuit.
6. Do not wash or pressure wash around electrical
connections and components.
CAUTION
Always place the ignition switch in the OFF position
and remove the negative battery cable before
inspecting, performing maintenance, or repairing the
electrical system.
NOTICE
Use of Dielectric grease on electrical connections is
recommended.
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