RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 7 (2001)
Fig.6 Bus Biasing
Fig.7 Bus Termination
The power supplied to the data bus is known as bus biasing. Bus bias is provided through a series circuit. To properly bias the data bus circuits, a 5
volt supply is provided through a 13 kiloohm resistor to the Bus (-) circuit. Voltage from the Bus (-) circuit flows through a 120 ohm termination
resistor to the Bus (+) circuit. The Bus (+) circuit is grounded through another 13 kiloohm resistor. While at least one termination resistor is
required for the system to operate, most Chrysler systems use two. The second termination resistor serves as a backup. The termination resistor
provides a path for the bus bias voltage. Without a termination point, voltage biasing would not occur. Voltage would go to 5 volts on one bus
