Circuit Description

WARNING: This page is about a different car, the 2000 Chevrolet Corvette and 1999 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

RDCM has 2 main power feeds (high and low), and one main ground. Low power feed (battery No. 1) is used to provide power for RDCM logic and internal driver operation. High power feed (battery No. 2) is used to provide power for systems that draw greater amounts of current (motors, light, etc.). For most functions, RDCM will operate properly when vehicle system voltage is 9.0-16.0 volts. RDCM also monitors voltage level at battery No. 1 and battery No. 2 circuits and can determine if voltage level received is out of range. If voltage is out of range in either circuit, a malfunction is present and DTC will set.

DTC B2285 will set if RDCM detects battery No. 1 voltage range less than 8.5 volts or greater than 16.3 volts. This condition must exist for 2 seconds. DTC B2285 will store as a history code in RDCM memory. No driver warning will be displayed.

Under all fault conditions, DTC B2285 will clear automatically when RDCM detects battery No. 2 voltage range is 8.5-16.3 volts for longer than 2 seconds. Current and history DTCs can be cleared using scan tool or on-board diagnostics.