Chapter 3 — Troubleshooting Information
34 Vehicle Power Supply Installation Guide
Voltage not
present
No input power
to the power
supply
Replace in-line fuse if voltage is not
present at connector
Voltage still
not present
Still no input
power to the
power supply
Replace input power cable if input
voltage is still not present at
connector
Fuse blowing,
but no LED lit
Power system is
drawing too
much current
Have the forklift vendor
recommend in-line filter, alternate
connection point, and check cables
for nicks, and shorts.
Power Supply Pinouts
Connector Negative Positive Case
Input Power Connector Pin 1
Pin 2
Pin 3
Pin 4
Shield
Secondary Output Power Connector
(Heater)
Pin 1 Pin 2
Main Output Power Connector Pin 3 Pin 2 Pin 1
Advanced Troubleshooting Steps (continued)
LED/Voltage Meaning Test or Remedy