User manual BENDIX EC-60 ABS-ATC ESP CONTROLLERS ADV

[. . . ] ® Bendix® EC-60TM ABS / ATC / ESP Controllers (Advanced Models) See SD-13-4863 for Standard and Premium Controllers TABLE OF CONTENTS PAGE General System Information Introduction . 44-47 FIGURE 1 - EC-60TM ADVANCED CONTROLLER INTRODUCTION The Bendix® EC-60TM advanced controller is a member of a family of electronic Antilock Braking System (ABS) devices designed to help improve the braking characteristics of air braked vehicles - including heavy and medium duty buses, trucks, and tractors. Bendix® ABS uses wheel speed sensors, ABS pressure modulator valves, and an ECU to control either four or six wheels of a vehicle. The EC-60TM controller monitors individual wheel turning motion during braking and adjusts or modulates the brake pressure at the wheel end. [. . . ] Make sure the sensor, its mounting screws, and the interface between the hub and the steering column are not damaged. Diagnostics: The steering angle sensor is only operational in conjunction with an Advanced ABS ECU. Depending upon manufacturer, the steering angle sensor could be located either near the steering wheel, necessitating the removal of the steering wheel, or near the joint to the vehicle steering mechanism, necessitating the disconnection of this linkage. Squeeze the mounting tabs and pull gently on connector until it disengages. Unscrew all three of the mounting screws that hold the body of the sensor to the steering column body. Take note if the sensor label is facing upward or downward. 14 REMOVAL OF THE YAW RATE/LATERAL ACCELERATION SENSOR Service Checks: 1. Make sure the sensor, its mounting bolts, and the mounting bracket are not damaged. Vent hold should remain free from paint and debris at all times. Diagnostics: The yaw rate sensor is only operational in conjunction with an Advanced ABS ECU. In some mounting configurations, the sensor can be removed independently from its mounting bracket. WARNING: Only Bendix-approved replacement sensors must be used to prevent negatively affecting antilock system reliability and braking performance issues. The bracket must be the same design as used on the original vehicle configuration. Using three M8 size bolts, the fixing torque should be between 18 and 22N. The connector should be facing in the same direction as the removed sensor. The unit must not be installed upside-down where there is a pressure-balancing hole. The sensor should be as level as possible and parallel to the road surface when installed on the vehicle. Ensure that there will be no force applied to the sensor because the connector is pulling on the sensor body. CAUTION: When removing or installing the sensor, care must be used to prevent damage. Do not use an impact tool to install the mounting hardware. BRAKE DEMAND SENSOR CALIBRATION Calibration must be performed under the following conditions: · After servicing any pressure sensor related DTCs · Replacement of any sensor The calibration procedure is performed using Bendix® AComTM Diagnostics V4. 0 or newer versions. See "Troubleshooting Diagnostic Trouble Codes: Brake Demand Sensor/Load Sensor" for the calibration procedure. Service Checks: 1. Make sure the sensor and its interface to the pressure location are not damaged. Diagnostics: The pressure sensor can be independently diagnosed when supplied with a five volt voltage supply to the B location and ground to the A location. Signal output on the C location should read approximately 0. 5V if there is no pressure applied. [. . . ] The tester can initiate test sequences, and can also read system parameters. Differential Braking -- Application of brake force to a spinning wheel so that torque can be applied to wheels which are not slipping. Diagnostic Trouble Code -- A condition that interferes with the generation or transmission of response or control signals in the vehicle's ABS system that could lead to the functionality of the ABS system becoming inoperable in whole or in part. FMVSS-121 -- Federal Motor Vehicle Safety Standard which regulates air brake systems. [. . . ]