4-118 4222983 Second Edition
ELECTRICAL
4
Generator Control Unit Diagnostic Trouble Codes (DTC)
DTC: Generator Fault 14
Pack voltage too high, greater than 64 volts for 5 seconds.
DTC: Generator Fault 15
Pack voltage too low, less than 38 volts for 10 seconds.
DTC: Generator Fault 21
Generator temperature greater than 266° F (130° C).
DTC: Generator Fault 22
Generator temperature greater than 212° F (100° C) or rectifier temperature greater than 176° F (80° C).
Probable Cause Remedy
48V battery pack charged over 64 volts. Remove battery charger.
Stuck throttle. Check throttle linkage; adjust and repair.
Faulty throttle actuator. Test actuator. (See “Throttle Actuator Test (Diesel)” on page 4-134.) (See “Throttle
Actuator Test (Gas)” on page 4-135.)
Probable Cause Remedy
48V battery pack is low. Charge battery.
Extended use of whisper mode. Place machine in normal mode and allow the genset to charge the 48V battery pack.
For a severely depleted 48V battery pack, charge the battery pack with a battery charger.
Probable Cause Remedy
Running on high load (150A continuous). Remove load.
Debris in or around genset fan. Remove debris and clean the genset fan.
Faulty connections. Check 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
Running on high load (150A continuous). Remove load.
Debris in 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.
To Next Page
Loading...
Need help?
General
