Taylor-Dunn SS5-34, Operation, Troubleshooting Manual

Page: 98 / 200

ELECTRICAL TROUBLESHOOTING
SECTION 4 Main Sequence PAGE 20
Main Battery Negative
B-
M-
A2
B+
#2
KSI
_
+
The voltage shown is for illustration
only. The actual voltage may vary.
Solenoids are shown for reference only.
The type and position of the forward
solenoid in your truck may be different
ISO
_
+
The voltage shown is for illustration
only. The actual voltage may vary.
FWD/REV
Solenoids are shown for reference only.
The type and position of the forward
solenoid in your truck may be different
FWD/REV
Reverse (does not run in forward)
Connect a voltmeter across the PMC KSI
terminal and battery negative.
Close all interlock switches, turn the Key
Switch ON, and place the F&R Switch in
forward.
•
If the voltage is not at battery volts then
go to the
Key Switch sequence.
Connect a voltmeter across the Forward Solenoid
coil terminals. Refer to your vehicles wiring
diagram to identify the position of the forward
solenoid.
Close all interlock switches, turn the Key
Switch ON, and place the F&R Switch in
forward.
Depress the accelerator pedal fully.
•
If the voltage is not at battery volts then
go to the
F/R Switch sequence.
Set the test light voltage to the same voltage as
the battery volts.
Connect the test light across the Normally Open
contacts of the Forward solenoid. Refer to your
vehicles wiring diagram to identify the position
of the forward solenoid.
Close all interlock switches, turn the Key
Switch ON, and place the F&R Switch in
forward.
Depress the accelerator pedal fully.
•
If the light comes on then the Forward
solenoid has failed. Stop trouble shooting
here and repair the problem. When the
repair is completed, completely retest the
vehicle before lowering the drive wheels
to the ground.