Rear Audio/Climate Control Module
WARNING: This page is about a different car, the 2004 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
The rear audio/climate control module is equipped on limousine (long wheel base) vehicles. The rear audio/climate control module converts an input from the rear audio/climate control switch, then signals the audio control module (ACM) via the audio corporate protocol (ACP) bus. The ACM then signals the DATC module over the J1850 communications network (standard corporate protocol [SCP] bus).