
59
MicroController Control System
Troubleshooting
PROBLEM 6
Display = “A3” and “ accelerator symbols”,
no lift truck operation.
POSSIBLE CAUSE
The truck goes into Quick Diagnostic.
Check voltage from logic DE-3 to battery
negative.
No voltage
Battery voltage
CHECKS
Release the accelerator pedal and move direction switch to
neutral. Key switch off and on.
Still problem
Normal
Check voltage from logic DC-1 to battery
negative.
Above 4volts
Replace accelerator.
Replace direction switch.
Содержание B20S-3
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