Replace lift/lower potentiometer and calibrate.
Bad lift/lower potentiometer.
Adjust spring set screws so there is no play in the
neutral position. Calibrate the control handle.
Excess “play” in the control handle.
Perform lift potentiometer calibration procedure.
Lift/lower potentiometer out of calibration.
Return control handle to neutral.
The control handle is not in neutral when the
brake pedal is depressed.
PERFORM INPUT TESTS 03 & 04 - TRAVEL & LIFT/LOWER POTENTIOMETER VOLTAGE. Look
for constant repeatable voltage readings in neutral.
Solution
Possible Cause
Programmable reverse-lift interlock is enabled. Lift
potentiometer voltage is in the lift range (more than
0.14V above calibrated center) and travel
potentiometer voltage is in the reverse range (more
than 0.12V below calibrated center) while brake
pedal is depressed.
LIFT system shutdown until condition is cleared.
NOTE: if rE Lf is enabled in programming and
traveling in reverse, this is normal.
Criteria
Resulting Effect
REVERSE LIFT INTERLOCK WARNING
Fault condition
E04
E04
Check working voltage of battery. It must be within
the range listed at left. Replace the battery if the
voltage is above the maximum or below the
minimum listed voltages. After charging, allow the
battery to sit for the time period recommended by
the manufacturer.
Battery voltage outside of normal working range:
Maximum Minimum
41.2 V 29.5 V
A freshly charged battery which has not been
allowed to sit for the recommended time may
exceed the voltage range.
Solution
Possible Cause
Battery voltage is out of the normal operating
range.
TOTAL shutdown.
Criteria
Resulting Effect
BATTERY VOLTAGE OUT OF RANGE
Fault condition
E05
E05
Replace travel potentiometer.
Bad potentiometer.
Inspect and repair wiring as necessary.
Wiring to travel potentiometer broken or shorted.
PERFORM INPUT TEST 03 - TRAVEL POTENTIOMETER VOLTAGE. Look for “dead spots”, sudden
voltage jumps, etc.
Solution
Possible Cause
Travel potentiometer voltage is outside the normal
operating range (0.39V to 4.63V). Note: actual
voltage supplied to potentiometer is 15V.
TRACTION system shutdown.
Criteria
Resulting Effect
TRAVEL POTENTIOMETER VOLTAGE OUT OF RANGE
Fault condition
E06
E06
E
lectric
C
ounterbalance
H
igh
O
utput
Troubleshooting
REV 12/5/99
TS.2
