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MicroController Control System Troubleshooting
PROBLEM 22
Display = “EL”. No hydraulic (lift and tilt).
Steering normal.
Battery discharge indicator (BDI) circuit defect.
POSSIBLE CAUSE
Battery discharged or has a defect; Logics defect.
CHECKS
Connect battery, turn on key switch, close seat switch
and measure voltage from BATT+ to BATT- on
controller. Voltage must be greater than 45 volts.
Voltage OK Voltage low
With key ON, seat switch and line contactor
closed, measure voltage at BATT+ on
controller.
Battery voltage Less than battery
Replace logics.
Check battery connections;
Charge or replace battery.
Repair shorted wire or high resistance
connection causing the improper voltage.
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