Jacobsen Eclipse 322, Repair Manual

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4-120 4222983 Second Edition
ELECTRICAL
4
DTC: Generator Fault 56
Generator temperature greater than 340° F (171° C).
DTC: Generator Fault 57
Generator temperature less than -20° F (-29° C).
DTC: Generator Fault 58
Rectifier temperature greater than 340° F (171° C).
Probable Cause Remedy
Running on high load (150A continuous). Remove load.
Debris on or around genset fan. Remove debris and clean the genset fan.
Faulty connections. Check steering motor connections; make sure connections are dry, clean of corrosion
and tight.
Faulty wiring harness. Make sure wiring harness is free of nicks and cuts and not pinched to machine frame.
Faulty fan relay. Test relay. (See “Fan Relay Test” on page 4-128.)
Faulty genset fan. Substitute the genset fan with a known good genset fan. If system now works, re-install
old component to verify fault returns.
Faulty generator control unit. Substitute the generator control unit with a known good generator control unit. If system
now works, re-install old component to verify fault returns.
Faulty permanent magnet generator
temperature sensor. Replace generator. If system now works, re-install old component to verify fault returns.
Probable Cause Remedy
Faulty connections. Check steering motor connections; make sure connections are dry, clean of corrosion
and tight.
Faulty wiring harness. Make sure wiring harness is free of nicks and cuts and not pinched to machine frame.
Faulty generator control unit. Substitute the generator control unit with a known good generator control unit. If system
now works, re-install old component to verify fault returns.
Probable Cause Remedy
Running on high load (150A continuous). Remove load.
Debris on or around genset fan. Remove debris and clean the genset fan.
Faulty connections. Check steering motor connections; make sure connections are dry, clean of corrosion
and tight.
Faulty wiring harness. Make sure wiring harness is free of nicks and cuts and not pinched to machine frame.
Faulty fan relay. Test relay. (See “Fan Relay Test” on page 4-128.)
Faulty genset fan. Substitute the genset fan with a known good genset fan. If system now works, re-install
old component to verify fault returns.
Faulty generator control unit. Substitute the generator control unit with a known good generator control unit. If system
now works, re-install old component to verify fault returns.
Faulty rectifier temperature sensor circuit. Replace rectifier wiring. If system now works, re-install old component to verify fault
returns.