Aviator 2WD V8-4.6L DOHC (2003)
Test N2-N4
Normal Operation
The navigation module communicates with the diagnostic tool through the SCP communications network circuits 914 (TN/OG) and 915 (PK/LB). If
one of the bus wires becomes shorted to ground or voltage, or if some but not all termination resistors are lost, communications can continue. Check
circuits 914 (TN/OG) and 915 (PK/LB) between the navigation module C4209 and the data link connector (DLC) C251. Total resistance values must
not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in circuit 914 (TN/OG) or 915 (PK/LB), damage to the DLC C251 or
damage to the navigation module C4209.
Possible Causes
-
circuit 914 (TN/OG) open or shorted to ground
-
circuit 915 (PK/LB) open or shorted to ground
