Failure Conditions
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1991 Oldsmobile Toronado, 1991 Cadillac Seville, 1991 Cadillac Eldorado, 1991 Buick Riviera, and 1991 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.
Code 31 will set if voltage at SENSE LOW input is 28-59 percent of IGNITION 1 output voltage for 700 milliseconds and Code 42 is not set.