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.

Right window switch provides input to Right Door Control Module (RDCM) when right window switch is depressed to UP or DOWN position. This input allows RDCM to detect a right window up or down request. RDCM provides both power and ground to right window switch. When right window switch is depressed to UP or DOWN position, ground is supplied through right window switch and right window up or down input is pulled low. When RDCM detects low voltage on right window up or down switch input circuit, RDCM will command right window up or down. When switch is released, RDCM will command right window to stop (window express down feature not activated). RDCM monitors right window input circuit and determines how long ground had been applied. If ground is applied for longer than expected, a malfunction is present and a DTC will set.

DTC B2203 will set if RDCM detects a low voltage level (short to ground) at right window up switch input circuit. This condition must exist for more than 20 seconds. DTC B2203 will store as a history code in RDCM memory. No driver warning will be displayed.

Under all fault conditions, DTC B2203 will clear automatically when RDCM no longer detects a low voltage level (short to ground) at right window up switch input circuit for longer than 20 seconds. Current and history DTCs can be cleared using scan tool or on-board diagnostics.