Test Description
WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 3. Tests for the proper operation of the 12 V sensor power circuit, sensor ground circuit, and Passlock™ data circuit. Troubleshoot the appropriate DTC prior to diagnosing DTC B3031.