F 150 4WD V8-4.6L VIN 8 (2010)
The data (+) and data (-) circuits are each regulated to approximately 2.5 volts during neutral or rested network traffic. As messages are sent on the data
(+) circuit, voltage is increased by approximately 1.0 volt. Inversely, the data (-) circuit is reduced by approximately 1.0 volt when a message is sent.
Successful communication of a message can usually be identified by the slight spike at the end of a message transmission. This spike is a "positive
acknowledge" signal from multiple modules confirming receipt of the message sent.
CAN Circuits Shorted Together
In the event the data (+) and data (-) circuits become shorted together, the signal stays at base voltage (2.5V) continuously and all communication
capabilities are lost.
CAN (+) Circuit Shorted To Ground
