TCM FB30-8 - Page 205

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3. TROUBLESHOOTING GUIDE
(2) Load-handling system (including trucks with an Orbitrol steering system) (1/3)
Error code
on display
Error description Problem Resetting Error code conditions
LED
code
Page
blinks.
Load-handling system neutral interlock
The load handling system won’t work. Lift lock solenoid OFF.
Turn the key switch ON when: • the load-handling levers are
in neutral.
When the key switch is turned ON: • A load-handling signal is present (i.e., the
seat switch is ON).
01 58
402
Pump motor inverter unit temp. abnormal
The load handling system won’t work.
The temp. drops to less than 109°C [228°F].
The temp. rises above 109°C [228°F]. 34 58
403
Pump motor inverter unit temp. too high
The load handling system works (but the output current is limited).
The temp. drops to 90°C [194°F] or below.
The temp. rises above 94°C [201°F]. 33 58
404
Pump motor inverter unit thermosensor 1 (TMD1) AD input range abnormal
The load-handling output is limited.
Automatically resets when the input returns to normal.
The thermosensor voltage drops below 0.2 V or rises above 4.92 V.
31
58
Pump motor inverter unit thermosensor 2 (TMD2) AD input range abnormal
32
405 Pump motor temp. abnormal The load handling system won’t work.
The temp. drops to less than 115°C [311°F].
The temp. rises above 155°C [311°F]. 37 58
406 Pump motor temp. too high
The load handling system works (but the output current is limited).
The temp. drops to 135°C [275°F] or below.
The temp. rises above 145°C [293°F]. 36 58
407
Pump motor thermosensor defective AD input range abnormal
The load-handling output is limited.
Automatically resets when the input returns to normal.
The thermosensor voltage drops below 0.15 V or rises above 4.92 V.
35 59
410
Rotation sensor defective • The A or B phase pulse is missing. • The A and B phase pulses are missing.
The load handling system won’t work.
Automatically resets when the input returns to normal.
A load-handling signal (including operation of the steering wheel during OBT) is present and speed pulse inputs (both A and B phases) are absent. The current equivalent to the maximum torque (i.e., the torque command is for more than 60% of full current) continues for 15 seconds or longer.
73 59
Rotation sensor defective Bearing defective (Stall signals detected continuously)
The load-handling output is limited.
Automatically resets when the input returns to normal.
74 59
412
Lift potentiometer defective
The load handling system won’t work.
Automatically resets when the input returns to normal.
The lift potentiometer output voltage drops below 0.2 V or rises above 4.8 V.
06 59