Dash Display
Controller LED
Handset or PC
No LEDs or LCDs
illuminated
LED OFF
Handset does not operate
CONDITION
LOGIC
Occurs when there is no power to the controller or
the controller is defective.
Dash display, controller LED, and truck inoperative
with key switch in ON position.
TRUCK RESPONSE
Travel and hydraulic functions disabled.
POSSIBLE CAUSES AND TEST PROCEDURES
• B+ and/or B- missing at controller.
Confirm battery is connected and of
proper voltage.
Verify key switch is ON.
Verify brake override circuit is
connected in run position.
Verify continuity between batteries
negative (at battery) and -B power wire
connection (at controller).
If no continuity, check:
Power wiring between battery and
controller.
Verify continuity between battery
positive (at battery) and B-12 connection
(at controller).
If no continuity, check:
Fuse 3 for open.
Key switch continuity in ON position.
Wiring b to main contactor to
fuse 3 to key switch, to controller B-12
connection.
• Defective motor controller.
Check for battery voltage between B-12
and B- power wire connection at
controller.
If correct battery voltage, replace
controller.
Refer to the section Electrical System
2200SRM1026 or Electrical System 2200SRM1007
for more information on troubleshooting electrical
system circuits and components.
2200 SRM 1064
Troubleshooting
15