Audio Control Protocol (ACP) Module

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The ACP module is used as an interface between the instrument cluster, which is on the medium speed CAN, and the navigation system, which is on the ACP. The ACP module converts a specified set of Escape Hybrid-related medium speed CAN messages (gatewayed by the cluster) to the navigation system module. The navigation system uses the data contained in the ACP messages to display Escape Hybrid information on the navigation display screen. If 1 of the 2 bus wires becomes shorted to ground or voltage, communications on the CAN may not be possible. If there is an open in the network, communications may continue between some modules depending upon the location of the open circuit. Check the medium speed CAN circuits 1847 (WH/OG) and 1848 (PK/OG) between the ACP module C2294a and the DLC C251. Total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms, there is an open circuit in the medium speed CAN, damage to the DLC C251, damage to the ACP module C2294a, or a problem in the in-line connector. For additional ACP module information, refer to INFORMATION AND ENTERTAINMENT SYSTEMS .