Service Manual

Pro Sweep
Page 4 -- 8
Electrical System
Component Testing
For accurate resistance and/or continuity checks, elec-
trically disconnect the component being tested from the
circuit (e.g. unplug the relay wire harness c onnector be-
fore doing a continuity check on relay).
CAUTION
When testing electrical components for continu -
ity with a multimeter (ohms setting), make sure
that power to the circuit has been disconnected.
Fuse
The Pro Sweep uses a single 20 amp fuse for circuit
protection.Thefuseholderislocated inthewireharness
(Fig. 4). If the fuse is faulty or missing, no electrical pow-
er will be available for sweeper operation.
Testing
Remove fuse from the fuse holder for testing. Fuse
should have continuity between fuse terminals.
1. Fuse holder
Figure 4
1
Diode Assemblies
Three (3) diode assemblies are used in the Pro Sweep
to provide logic for the control module functions. D iode
D1provides logiccontrolforthesweeper downfunction.
Diodes D2 and D3 provide logic control for the sweeper
up function. All of these diodes plug into the wire har-
ness and are located near the offset cylinder.
Diode Testing
The diode (Fig. 5) can be tested using a digital multime-
ter (diode test setting) and the table to the right.
Figure 5
1. Diode
2. Male terminal
3. Female terminal
1
3
2
Multimeter
Red Lead (+)
on Terminal
Multimeter
Black Lead (--)
on Terminal
Continuity
Female Male YES
Male Female NO