Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- This diagnostic is designed to detect an unexpected abrupt voltage signal change from the FTP.
- Scan tool output controls, snapshot, and plot functions can help detect erratic sensor response. To look at the sensor signal under vacuum conditions, use snapshot and the purge/seal function to capture data while commanding purge to 30 percent, and then plot the data to look for erratic sensor operation. A similar inspection can be done for the pressure side of the sensor range by applying pressure with the J 41413-200 while taking a snapshot.
- Ensure that the reference port on the FTP sensor is unobstructed.