JLG E450A Service And Maintenance Manual page 400

SECTION 6 - JLG CONTROL SYSTEM
DTC Cat DTC Num
99 234 REAR LEFT MODULE - EEPROM FAILURE
99 235 REAR LEFT MODULE - PROTECTION FAILURE
99 236 REAR LEFT MODULE - CHECK POWER CIRCUITS
OR MOSFET SHORT CIRCUITC
99 237 REAR LEFT MODULE - WATCHDOG RESET
99 238 REAR LEFT MODULE - WATCHDOG2 RESET
99 239 REAR LEFT MODULE - RAM FAILURE
99 240 REAR LEFT MODULE - INTERNAL ERROR
99 241 REAR LEFT MODULE - INTERNAL ERROR
99 242 REAR LEFT MODULE - INTERNAL ERROR
99 243 REAR LEFT MODULE - INTERNAL ERROR
99 244 REAR LEFT MODULE - INTERNAL ERROR
99 245 REAR LEFT MODULE - INTERNAL ERROR
99 246 REAR LEFT MODULE - CAPACITOR BANK FAULT
99 247 REAR LEFT MODULE - A/D FAILURE
99 248 REAR RIGHT MODULE - EEPROM FAILURE
99 249 REAR RIGHT MODULE - PROTECTION FAILURE
99 250 REAR RIGHT MODULE - CHECK POWER CIRCUITS
OR MOSFET SHORT CIRCUIT
99 251 REAR RIGHT MODULE - WATCHDOG RESET
6-84
Table 6-17. Diagnostic Trouble Codes
DTC Text
Applicable Power Module determines at Startup
that an internal EEPROM error exists or UGM fails to
successfully verify or write to/read back Indirect
Table three times
Applicable Power Module determines that an
internal failure exists in the hardware protection
circuit
Applicable Power Module determines at Startup
that a short circuit exists on the power MOSFET out-
puts
Applicable Power Module determines that Watch-
dog failure/reset has occurred to one if two, or both
Applicable Power Module determines that
Watchdog2 failure/reset has occurred
Applicable Power Module determines that a RAM
checksum error has occurred
Applicable Power Module determines at Startup
that the current gain is incorrect and may cause
incorrect data acquisition values
Applicable Power Module determines that the data
acquisition is in error
Applicable Power Module determines that the
Pump current is being measured is not zero when
expected to be zero at Startup or during standby
Applicable Power Module determines that the Slip
Profile is in error
Applicable Power Module determines that the cur-
rent feedbacks are out of range at Startup or when
in standby
Applicable Power Module determines at Startup
that there is a problem with overvoltage/under-
voltage detection
The power capacitor bank of the Power Module is
not charging properly (increasing voltage) at
Startup
Applicable Power Module determines that an
internal Analog Input error exists
Applicable Power Module determines at Startup
that an internal EEPROM error exists or UGM fails to
successfully verify or write to/read back Indirect
Table three times
Applicable Power Module determines that an
internal failure exists in the hardware protection
circuit
Applicable Power Module determines at Startup
that a short circuit exists on the power MOSFET out-
puts
Applicable Power Module determines that Watch-
dog failure/reset has occurred to one if two, or both
Fault Description
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Solution
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