User manual BENDIX EC-30 ABS-ATC CONTROLLER

[. . . ] ® Bendix® EC-30TM ABS / ATC Controller Mounting Inserts (4 Places) 18-pin Connector 30-pin Connector FIGURE 1 - EC-30TM CONTROLLER Part Number Label LED Diagnostic Display INTRODUCTION The Bendix® EC-30TM is an electronic ABS (antilock braking system) controller. It is the base component in a family of ABS assemblies for heavy and medium duty buses, trucks and tractors utilizing pneumatic braking systems. The ABS function of the EC-30TM controller is designed to optimize slip on all vehicle wheels. The EC-30TM controller provides the vehicle with improved stability and steerability during braking. [. . . ] A reset button on the DCI duplicates the function of the magnetic reset on the EC-30TM controller. There are also two DCI status indicators to indicate power and active communication to the DCI. To perform diagnostics using the Bendix DCI, plug the DCI into the vehicle's J1587 diagnostic link connector. This connector is generally located on the lower, driver-side portion of the vehicle dash or under the dash panel. Note: The DCI is not RP-1210 compliant and can not be used as the communication link to any diagnostic software intended for use with the EC-30TM controller. An RP-1210 compliant communication link from the computer to the vehicle diagnostic connector will be needed. For further information on the Bendix DCI, or RP-1210 compliant tools, contact Bendix or refer to your local authorized Bendix dealer. Reading a Fault with DCI When a fault is detected, the DCI identifies the faulted component with the diagnostic LEDs. When a wheel speed sensor fault, or an ABS modulator fault, is detected, the SEN or MOD LEDs will be accompanied by two location LEDs. When these three LEDs are on, this is an indication of a fault on the front axle(FRT), right side(RHT), wheel speed sensor(SEN). For a complete explanation of faults displayed by the DCI LEDs, see section F, Troubleshooting. The DCI will only indicate active system faults. When a fault self-heals or is manually reset, the fault code remains in fault history. Fault history can be retrieved by using blink code diagnostics or a capable diagnostic tool. If faults occur on multiple components, the DCI will display one fault at a time. When the first fault is fixed and the EC-30TM controller is reset, the next fault will be displayed on the DCI. A fault displayed on the DCI will always be accompanied by the illumination of the ABS warning lamp and/or the ATC active/warning lamp. Fault Reset with DCI After the fault is corrected, the active fault code and LEDs can be reset by briefly pressing the reset button on the DCI. All of the DCI diagnostic LEDs will be on while the reset button is pressed. When the reset button is released, only the green VLT diagnostic LED should be on. If red LEDs remain on, active faults are still present in the system. The EC-30TM controller self-configuration will occur when the reset button is pressed for greater than 20 seconds. Located on Dash Panel Or FIGURE 10 - BENDIX DCI - DIAGNOSTIC COMMUNICATIONS INTERFACE Located Under Dash Panel FIGURE 11 - VEHICLE DIAGNOSTIC CONNECTOR LOCATION (J1708/J1587, J1939) 14 BENDIX ABS DIAGNOSTIC SOFTWARE Bendix ABS Diagnostic Software is a RP-1210 compliant PC-based program that provides technicians with the highest level of diagnostic information and control of the EC-30TM controller. It can also be used to diagnose the EC-15TM, EC-16TM, EC-17TM and MC-30TM controllers (Trailer) ABS units. With Bendix ABS Diagnostic Software, the technician can perform the following: - Full ABS / ATC diagnostics - Configuration (ABS, ATC, and more) - Transfer data - Perform system and component tests - Update EC-30TM controller software versions (new features) - Save and print information When diagnosing the EC-30TM controller using a personal computer and the Bendix ABS Diagnostic Software, the computer's serial or parallel port can be connected to the vehicle's diagnostic connector (J1708/J1587 or J1939) through an RP-1210 compliant communication link. the field. [. . . ] Go to Section A. Dynamic ABS Modulator Faults Verify proper modulator activation with brake pressure applied at power-up (chuff test) and/or using diagnostic tool. Check for dragging brakes, dry bearings, faulty return springs, parking brake system faults, restricted brake air lines, over adjusted slacks, out-of-round drums or damaged/loose tone rings. 18-Pin Connector 1 2 3 FED F1 D1 E1 CBA 30-Pin Connector 1 2 3 KJHGF EDCBA Electrical connector on the M-30TM, M-22TM or M-22TM Modulator Left Rear Mod Common Left Rear Mod Exhaust Left Rear Mod Hold H1 Left Front Mod Common F1 Left Front Mod Exhaust G1 Left Front Mod Hold C1 E1 D1 Right Front Mod Common Right Front Mod Exhaust Right Front Mod Hold Ground Power A1 Right Rear Mod Common C1 Right Rear Mod Exhaust B1 Right Rear Mod Hold Exhaust A Common B Hold C A1, A2, A3 B1, K2, K3 28 SECTION J - TROUBLESHOOTING THE ATC MODULATOR TRC and MOD LEDs and ATC active/warning lamp are on. Turn the ignition off and remove the 18-pin connector from the EC-30TM controller. Make repairs to wiring or replace ATC modulator. Reconnect all connectors to the EC-30TM controller and ATC modulator. Reset fault codes by briefly holding a magnet in place at the RESET location of the diagnostic display. [. . . ]