JLG Boom Lift Error Codes
JLG Boom Lift Fault Codes list
116
Fault Message: ECT higher than expected stage 1
Description: Engine Coolant Temperature reading or estimate greater than the stage 1 limit when operating at a speed greater than defined in the diagnostic calibration.
Corrective Action: Sound audible warning or illuminate secondary warning lamp, disable adaptive learning fuel correction during active fault.
117
Fault Message: ECT Voltage Low
Description: Sensor voltage less than the limit defined in the diagnostic calibration.
Corrective Action: Sound audible warning or illuminate secondary warning lamp, disable adaptive learning fuel correction during active fault.
118
Fault Message: ECT Voltage High
Description: Sensor voltage higher than the limit defined in the diagnostic calibration.
Corrective Action: Sound audible warning or illuminate secondary warning lamp, disable adaptive learning fuel correction during active fault.
122
Fault Message: TPS 1 Low Voltage
Description: TPS sensor voltage lower than the limit defined in the diagnostic calibration.
Corrective Action: Sound audible warning or illuminate secondary warning lamp, shut down engine
123
Fault Message: TPS 1 High Voltage
Description: TPS sensor voltage higher than the limit defined in the diagnostic calibration.
Corrective Action: Sound audible warning or illuminate secondary warning lamp, shut down engine
217
Fault Message: ECT higher than expected stage 2
Description: Engine coolant temperature reading greater than the stage 2 limit when operating at a speed greater than defined.
Corrective Action: Sound audible warning or illuminate secondary warning lamp, disable adaptive learning fuel correction during active fault.
219
Fault Message: RPM higher than max allowed
Description: Engine speed greater than the max governor override speed as defined.
Corrective Action: Sound audible warning or illuminate secondary warning lamp, reduce throttle to limit speed.
336
Fault Message: Crank signal input noise
Description: Electrical noise or irregular crank pattern detected causing x number of crank resynchronization events
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp and disable fueling correction for remainder of key cycle.
337
Fault Message: Loss of Crank Input Signal
Description: loss of crankshaft position signal while valid camshaft position signals continue for x number of cam pulses.
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp.
521
Fault Message: Oil pressure high
Description: Oil pressure is indicating high when the engine has been stopped for more than x seconds.
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp, possibly configure for power derate 1 or low rev limit.
524
Fault Message: Oil pressure low
Description: Engine oil pressure lower than expected while engine has been running for a minimum amount of time
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp, generally configured to derate the engine and trigger an engine shutdown.
562
Fault Message: Battery voltage low
Description: Battery voltage to ECM less than x volts while the engine is operating at y RPM or greater
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp, disable adaptive fueling correction for remainder of key cycle.
563
Fault Message: Battery voltage high
Description: Battery voltage to ECM greater than x volts while the engine is running.
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp, disable adaptive fueling correction for remainder of key cycle.
642
Fault Message: Sensor supply voltage 1 low
Description: ECM 5 volt output is below the acceptable limit.
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp.
643
Fault Message: Sensor supply voltage 1 high
Description: ECM 5 volt output is above the acceptable limit.
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp.
1612
Fault Message: Microprocessor failure RTI 1
Description: Internal microprocessor error
1613
Fault Message: Microprocessor failure RTI 2
Description: Internal microprocessor error
1614
Fault Message: Microprocessor failure RTI 3
Description: Internal microprocessor error
1615
Fault Message: Microprocessor failure A/D
Description: Internal microprocessor error
1616
Fault Message: Microprocessor failure Interrupt
Description: Internal microprocessor error
1652
Fault Message: TPS1 loss of communications
Description: ECM is expecting to receive throttle position information from the throttle actuator and is not.
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp. Shut down engine.
2111
Fault Message: Unable to reach lower TPS
Description: Throttle command is 20% less than throttle position for 200ms or longer.
Corrective Action: Engine shut down
2112
Fault Message: Unable to reach higher TPS
Description: Throttle command is 20% more than actual throttle position.
Corrective Action: Engine shut down
9999
Fault Message: TPS1 failsafe spring failure
Description: When the key is off, the ECM is expecting the failsafe spring in the actuator to return the throttle position to near 0%.
Corrective Action: Illuminate MIL and/or sound audible warning or illuminate secondary warning lamp. Govern the engine speed to a forced idle speed.