- 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, 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.
Schematic Reference
Engine Controls Schematics
Connector End View Reference
- «Engine Controls Connector End Views»(ref-241687-S04858055362006081100000)
- «Engine Control Module (ECM) Connector End Views»(ref-241687-S30768695062006081100000)