Driver Information Center (DIC) or Message Center Circuit Description for Chevrolet Astro - 4WD 1999

The compass and temperature display module contains the entire compass display circuitry. Refer to Instrument Panel, Gauges and Console for the Compass Self-Calibrating Function or to set the variance. The speed signal CKT 389 (DK GRN) must be present in order to accurately diagnose the compass and temperature display module.