Pcm Code E032, Open Map Sensor Circuit: Description
WARNING: This page is about a different car, the 1992 Cadillac Seville and 1992 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
MAP sensor changes resistance based upon manifold vacuum. PCM provides a 5-volt reference and ground. MAP signal varies between zero and 5 volts as manifold vacuum varies. PCM Code E032 sets when PCM detects MAP sensor signal is too low.