Yaw Rate And Lateral Acceleration Sensor

Courtesy of JAGUAR CARS, INC.

Located under the center console, the yaw rate and lateral acceleration sensor provides two inputs to the anti-lock brake system (ABS) module, lateral acceleration and yaw rate, for DSC regulation. The sensor is isolated from body/chassis vibrations through its rubber mounting and secured to the transmission tunnel with 2 bolts.

When the ignition switch is in position II, the yaw rate and lateral acceleration sensor receives an ignition power feed from the central junction box (CJB). For yaw rate, the sensor produces a reference signal of 2.5 volts and a linear yaw rate signal from 0.7 to 4.3 volts. For lateral acceleration, the sensor produces a linear signal from 0.5 to 4.5 volts. In addition to using the inputs for DSC regulation, the anti-lock brake system (ABS) module also broadcasts yaw rate and lateral acceleration values, on the high speed controller area network (CAN) bus, for use by other systems.

The anti-lock brake system (ABS) module monitors the yaw rate and lateral acceleration sensor for faults and can be interrogated using T4. If a fault is detected the anti-lock brake system (ABS) module stores a related fault code and sends a controller area network (CAN) signal to the instrument cluster to illuminate the DSC, HDC and brake warning indicators. The instrument cluster also sounds a warning chime and displays a DSC fault message in the message center. Refer to Information and Message Center .