160 OPERATION operators manuals so that the vehicle operator has a clear understanding as to which ABS options are installed on the vehicle.
Location of the yaw rate/lateral acceleration sensor must not be altered. When servicing is required, the sensors must be replaced with identical components using the original equipment mounting brackets and tightening torque specifications (20 N.m [15 lb-ft]). The following additional changes MUST NOT be made to an "as-built" vehicle:
• Changes to maximum steering angle (to the left or right) • Changes to steer axle and/or drive axle track width • Changing the front and/or rear brake drums to drums having a different flange thickness Tire Size Calibration The ECU requires a precise rolling circumference ratio between the front steer axle and the rear drive axles for optimum performance of the system. For this reason, the system continuously calculates the precise ratio and stores the information in the ECU memory.
CAUTION Effectiveness of the RSA system relies on the accuracy of the reported vehicle speed. If major changes to tire sizes are made, such that changes to the vehicle speedometer/odometer settings are required, the Advanced EC-60™ ECU must be reprogrammed with the new values by a qualified technician.
Precautions When Installing Electrical Equipment Connecting electrically powered or electrically controlled equipment to the vehicle may cause interference with other vehicle components (e.g., the ABS system). The amount of interference will depend on the operating frequency of any new signals and the degree to which transient signals are coupled into the vehicle system. Note: Whenever new electrical equipment is installed, it is the obligation of the installer to ensure that the new equipment does not interfere with the proper operation of all other electrical systems on the vehicle.
