EA4 NTC 0x0A7 Handwheel Angle Over Travel

Slide 1

NTC Overview
NTC 0x0A7.0

Description:

    This diagnostic is in place to set fault when Handwheel Angle exceeds specific calibratable value (named EotLrngHwAgOverTrvlEntr) and gets back to another calibratable value (named EotLrngHwAgOverTrvlExit) for calibratable number of times (EotLrngHwAgOverTrvlCnt).

Diagnostic Overview:

 The diagnostic compares the Handwheel Angle with the Clockwise and Counterclockwise  calibratable values. When exceeding Enter value is detected and switch boolean variable is set to FALSE, the counter is incremented by 1. The counter can be incremented again only when the value of Handwheel Angle becomes lesser than the calibratable value. When counter exceeds calibratable count value, the fault is set.

Typical Fault Response:  

 -   Response for this diagnostic is F3

Probable Sources
(Most to Least Probable):

      • Wrong C-factor cal set 

      • Connection to probe housing assembly (no connection) 

      • Sensor fault 

      • Probe housing assembly  interface circuit failure 

      • Software Rack Limiter failure 

 

Initialization

 

Periodic

X

Event

 

Date

Revision

Initials

13Jun2016

Initial Release

SS

   
   
   
   
   
   
   
   
   

Description of Unusual Event setting NTC

Root Cause / Explanation

  
  
  

Date

FDD & Rev

Modifications to Diagnostic Function

13Jun2016

SF011A 2.1.0

Initial version

21Nov2016

SF011A 3.0.0

New logic of triggering added

   
   

Algorithm Changes / Lessons Learned / Revision Log

Last modified October 12, 2025: Initial commit (1fadfc4)