Navigation Module
The navigation module uses the SCP communications network for diagnostic communications, and a separate audio CAN to communicate with the navigation display unit.
Check the SCP communications network circuits between the navigation module C4209 and the DLC C251. The 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 SCP communications network, damage to the DLC C251, or damage to the navigation module C4209.
For additional navigation system information, refer to ENTERTAINMENT SYSTEM - GENERAL INFORMATION .