Test Description

WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

5

This step tests the MAP sensors ability to correctly indicate barometric pressure.

7

This step tests the MAP sensor's ability to respond to an increase in engine vacuum.

9

This step tests for a proper MAP sensor voltage with an applied vacuum.