DTC C1623-08: CAN Time-Out Steering Angle Sensor: General Description

The Controller Area Network (CAN) High Speed Bus is used where data needs to be exchanged between modules at a high rate, to minimize the delay between the occurrence of a change in sensor value and the reception of this information by a control device using the information to adjust vehicle system performance. The CAN network consists of two twisted wires: one signal circuit is identified as CAN-high and the other signal circuit is identified as CAN-low. At each end of the data bus there is a 120Ω termination resistor between the CAN-high and CAN-low circuits. When the CAN-high signal circuit is driven higher, to about 3.5V, and the CAN-low circuit is driven lower, to about 1.5V, the differential voltage becomes approximately 2.0 (±0.5)V.