Normal Operation

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

The electronic parking brake module communicates with the diagnostic tool through the standard corporate protocol (SCP) communications network circuits 4-CG16 (GY/RD) and 5-CG16 (BU/RD). If one of the SCP communications network circuits become shorted to ground or voltage, or if some but not all termination resistors are lost, communications can continue. Check circuits 4-CG16 (GY/RD) and 5-CG16 (BU/RD) between the electronic parking brake module C4205b and the data link connector (DLC) C251. The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms, there is either an open in circuit 4-CG16 (GY/RD) and 5-CG16 (BU/RD), damage to the DLC C251, damage to the electronic parking brake module C4205b, or a problem in the interior auxiliary junction box (AJB) C283b, interior AJB C283d, joint connector No. 5 C427 or joint connector No. 4 C223.