Dash Display
Controller LED
Handset or PC
AL01
1 Flash
SERIAL ERROR #1
CONDITION
LOGIC
No information or incorrect information has been
sent from the control card to controller.
Connection/communication error between control
card and traction controller.
TRUCK RESPONSE
Traction and hoist functions disabled.
POSSIBLE CAUSES AND TEST PROCEDURES
• Loose or damaged electrical connection
between control card and controller.
Verify connection at controller.
Verify wire harness connection at base
of steer handle.
Verify connection at control card.
• Damaged or defective control card.
Measure voltage at pin 5, connector C,
on the controller. With control card
disconnected, this should be about 12V;
with the card connected, it should be
about 5V. 0V or 12V with the card
connected means that the card may be
damaged.
Test the control card. Refer to Control
Card Functional Test in this section.
2200 SRM 1064
Troubleshooting
21