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DIAGNOSIS TSB Revision ACTIVE STABILITY CONTROL SYSTEM (ASC) 35C-95 CAUTION • If there is any problem in the CAN bus lines, an incor- rect diagnostic trouble code may be set. Prior to this − CAN Bus Line Diagnostic Flow • Whenever ECU is replaced, ensure that the CAN bus lines are normal. • When the hydraulic unit (integrated with ASC-ECU) is replaced, always carry out the calibration of the steer- and . OPERATION • The wheel speed sensor is a kind of a pulse generator. It consists of encoders (a plate on which north and south pole • The pulse signals, which the wheel speed sensor creates, are sent to ASC-ECU. ASC-ECU uses the frequency of the . DTC SET CONDITIONS This diagnostic trouble code is set if any malfunction below is • When the brake fluid pressure is decreased for a long time. • When the brake fluid pressure is held for a long time. . PROBABLE CAUSES • Damaged wiring harness and connectors • External noise interference • Malfunction of wheel speed sensor • ASC-ECU malfunction • Excessive gap between the wheel speed sensor and the magnetic encoder for wheel speed detection • Adhesion of foreign materials on the wheel speed sensor • Adhesion of foreign materials on the magnetic encoder for wheel speed detection • Wheel bearing malfunction • Improper installation of the wheel speed sensor • Deformation of the magnetic encoder for wheel speed detection • Disturbance of magnetization pattern for magnetic encoder for wheel speed detection • Missing teeth of the magnetic encoder for wheel speed detection |