Test Description
WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The number(s) below refer to the step number(s) on the diagnostic table.
Tests for an open, poor connection, or short to ground in the keyless entry serial data circuit. A measurement of B+ indicates good circuit continuity.
Tests for an short to voltage in the keyless entry serial data circuit. Illumination of an INCANDESCENT test lamp indicates a short to voltage. A LED circuit tester may give an incorrect indication.