Mountaineer 2WD V8-4.6L SOHC VIN W (2003)
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 PCM C175 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 in circuit 914 (TN/OG) or 915 (PK/LB), damage to the DLC C251,
damage to the PCM C175, or a problem in the in-line connector C1026.
The UBP communications network will not function if the wire is shorted to ground or voltage. The UBP is different from the ISO communication
network in that it allows intermodule communication.