EA4-x NTC 0x0A4(0-2) Absolute Temperature Thermal Limit
NTC Overview
NTC 0x0A4.(0-2) Absolute Temperature Thermal Limit
Description:
•This diagnostic logs a fault when either the controller temperature or copper temperature estimate exceed calibrated values.
Diagnostic Overview:
•The system components are designed to operated below specific temperature thresholds. If these threshold values are exceeded, a limit is applied to the system via limit tables to protect the components, and a diagnostic flag is set.
•This is a recoverable fault that clears once the controller temperature or copper temperature fall below the calibrated thresholds.
Typical Fault Response:
•Response for this diagnostic is F3.
•This fault is recoverable once the temperature values fall below the threshold within an ignition cycle.
Probable Sources
(Most to Least Probable):
•Excessive system usage
•System is exposed to high ambient temperature.
Initialization | |
Periodic | X |
Event |
Bit | Cause |
0 | Limiting due to Controller Temperature |
1 | Limiting due to Copper Temperature |
2 | Limiting due to Both Temperatures |
Date | Revision | Initials |
08FE16 | Initial Release | JK |
10Au16 | Update the bits table with 3 bits used in the NTC | PP |
Description of Unusual Event setting NTC | Root Cause / Explanation |
Date | FDD & Rev | Modifications to Diagnostic Function |
Algorithm Changes / Lessons Learned / Revision Log