Failure Conditions
WARNING: This page is about a different car, the 1992 Saturn SL2, 1992 Saturn SL1, 1992 Saturn SL, and 1992 Saturn SC. However, it is still accessible from the selected car via links, so may be relevant.
Code 31 will set if the voltage at the SENSE LOW input, DERM terminal A6, is within a specific range of IGN 1 voltage for 700 milliseconds and Code 42 is not set.