EA4-x NTC 0x0A3(0) Duty Cycle Exceeded

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NTC Overview
NTC 0x0A3.0 Duty Cycle Exceeded
(Reduced Performance)

Description:

• •This diagnostic logs a fault when the thermal duty cycle  filters exceed a calibrated threshold relative to thermal duty cycle performance.   

Diagnostic Overview:

• •Thermal duty cycle performance is customer specific and the duty cycle filter calibrations are designed to meet the specification while thermally protecting system components. 

• •The duty cycle filters monitor the current load supplied to the components (which is directly related to power loss and hence temperature rise) . If the current level and duration is above a specified performance, a limit is applied via a thermal limit table and a flag is set when the filter max output exceeds a calibrated limit. 

Typical Fault Response:  

• •Response for this diagnostic is F3 

• •This is a recoverable fault that clears once the max filter output falls below the threshold within an ignition cycle.
  
   

Probable Sources
(Most to Least Probable):

• •High current input for extended period of time. 

• •Excessive steering usage by the driver.