BUS Testing Overview

This course gives you an introduction about the various bus testing techniques

Testing areas

Flowchart

Rx frame test

Basics

  • if ECU does not receive a frame for more than a predefined time interval(frame timeout) then it should set failure bit and DTC.
  • the test is available for all modes (not required for high bus load mode),though the modes depend on requirements specified.

  • to implement this we set the periodicity (rep rate) more that the actual value for a predefined time interval.

  • Test duration is 2 * timeout duration. In

  1. Positive case: Threshold value is timeout value + 10% of actual timeout value.

  2. Negative case: Threshold value is timeout value – 10% of actual timeout value.

     

Steps to be followed