Model 8210/8250 Maintenance Manual Section 5. Troubleshooting
Symptom Table: Electrical System
Publication:1146945/001, Revised: 25 Sep 2018 5-17
Green/Red LED on Keypad Not
Illuminated When Key Pressed.
Possible Cause Action
No power supplied to the vehicle
manager
Check the control wires in the control handle arm harness.
Faulty Connectors Repair and replace the faulty connectors (check connector J11 at
the control handle arm base, the connector into the vehicle
manager (JPX3), and connector J1 to the motor controller).
FU3 Make sure the control fuse has not opened.
Key switch jumper not connected Connect the key switch jumper.
Faulty LED(s) Check the LED(s) if the truck functions normally but the LED(s)
are not lighting correctly.
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