User manual BENDIX EC-17 ANTILOCK TRACTION CONTROL

[. . . ] ® Bendix® EC-17TM AntiLock - Traction Controller MOUNTING HOLES (4) EC-17NTM CONTROLLER WITHOUT LED DIAGNOSTICS 18 PIN CONNECTOR 30 PIN CONNECTOR DIAGNOSTIC DISPLAY EC-17TM CONTROLLER WITH LED DIAGNOSTICS FIGURE 1 - EC-17TM & EC-17NTM ANTILOCK TRACTION CONTROLLERS DESCRIPTION GENERAL The EC-17TM is an electronic antilock controller. It is the base component in a family of full vehicle wheel control antilock systems for buses, trucks and truck tractors. In addition to the antilock function, the EC-17 TM controller can be assembled and programmed to provide an optional traction control feature. Figure 1 shows the basic EC-17TM/EC-17NTM controller configurations. [. . . ] Disconnect the electrical connector(s) from the EC-17TM controller. Note and mark the mounting position of the EC-17TM controller on the vehicle. Loosen, remove and save the nuts on the mounting hardware that attaches the EC-17TM controller bracket to the vehicle. Remove the EC-17TM controller and bracket from the vehicle. Remove and retain the four hex head bolts that secure the EC-17TM controller to the bracket. Separate the EC-17TM controller from the bracket. DIAGNOSING AND LOCATING A SYSTEM DIAGNOSTIC TROUBLE CODE GENERAL The EC-17TM controller contains self test and diagnostic circuitry that continuously checks for proper operation of the entire antilock/traction system, including wiring continuity. The EC-17TM & EC-17NTM controllers are programmed at the factory to accommodate the needs of the vehicle and the customer's desires. Both the EC-17TM & EC-17NTM controller can be reconfigured by the end user to include traction control (See the Important notice concerning the EC-17NTM controller). A vehicle equipped with traction control can generally be identified by noting the presence of a dash mounted condition lamp, a disable switch (for the traction control system) and a traction solenoid located above the relay valve. 10 Separate dash lamps, controlled by the EC-17TM/EC-17NTM controller, advise the driver of the condition of the entire antilock/traction system. When the controller senses an erroneous condition, it stores the condition in memory, illuminates the dash mounted condition lamp and after certain criteria are met it disables the antilock or traction control function. If so equipped, the EC-17TM controller illuminates the appropriate diagnostic LEDs. The diagnostic trouble code condition is truly stored and is not cleared by loss of power to the antilock system. The optional LEDs will illuminate when power is restored and remain illuminated until the failure is corrected. After the actual issue is corrected, maintenance personnel can clear or reset the EC-17TM controller diagnostics through the S. A. E. J1587 diagnostic link or the optional magnetic RESET point in the diagnostics display. To clear or reset an EC-17NTM controller (not equipped with LEDs) the S. A. E. J1587 diagnostic link must be utilized. VEHICLE DIAGNOSTIC CONNECTOR (J1587) IMPORTANT: The balance of this manual deals with diagnostics and controller self-configuration using the optional LED display on the EC-17TM controller (see Figure 1). Antilock systems using the EC-17NTM controller (see Figure 1) must use the Bendix, Diagnostic Communication Interface or DCI for diagnostics or reconfiguration. POWER AND COMMUNICATION INDICATION LAMPS COMPUTER SERIAL PORT CONNECTOR FIGURE 9 VEHICLE DIAGNOSTIC CONNECTOR LOCATION J1587 DIAGNOSTIC CONNECTOR (CONNECTED TO VEHICLE) Used with its Microsoft Windows* based software and a personal computer, the DCI is able to provide the technician with a high level of diagnostic information and antilock diagnostic trouble code history. This is particularly useful when attempting to determine the source of intermittent diagnostic trouble code indication from the antilock dash condition lamp. For field use or when a PC is not available, the DCI's integral LED display and switch provides the EC-17NTM controller user with exactly the same information that is available from the optional LED display on the EC-17TM controller. When using the DCI's LED display for system diagnosis or controller self-configuration the descriptions and procedures presented DIAGNOSTIC LAMPS LAP TOP COMPUTER RESET SWITCH FIGURE 8 DIAGNOSTIC COMMUNICATIONS INTERFACE DIAGNOSTIC COMMUNICATION INTERFACE The DCI (part # 5004893) is a dual level electronic diagnostic tool for either the EC-17TM or EC-17NTM antilock controller. It can either be used as a "stand alone" diagnostic tool or with Bendix's ACom For Windows software (part # 5004892). [. . . ] REPEAT THE INITIAL START UP PROCEDURE. Vehicle Power Here AntiLock Dash Lamp AntiLock Dash Lamp Relay Wiring 27 SECTION IX - TESTING FOR FALSE INDICATION CAUSED BY WHEEL SPEED COMPONENTS WITH IGNITION ON, HOLD A MAGNET ON RESET OF EC-17TM CONTROLLER AND NOTE LEDs START HERE NO ARE ALL LEDs ILLUMINATED? FRT MID RER RHT RESET REPLACE EC-17TM CONTROLLER Magnet here YES All LEDs Illuminated? REMOVE MAGNET LFT TRC MOD SEN ECU VLT EC-17TM CONTROLLER DIAGNOSTIC DISPLAY TURN THE IGNITION OFF AND REMOVE 18 AND 30 PIN CONNECTOR FROM EC-17TM CONTROLLER. SET VOLT/ OHMMETER TO AC SCALE AND GENTLY PROBE THE APPROPRIATE SPEED SENSOR "PIN PAIR" WHILE SPINNING WHEEL BY HAND (REFER TO FIGURE 5 FOR THE SPEED SENSOR PIN PAIR LOCATION IN THE 18 OR 30 PIN CONNECTOR). VOLTAGE OUTPUT FOR BENDIX WS-20TM SENSOR SHOULD BE ABOVE 0. 8 VOLTS AC AT 1 RPS. VOLTAGE OUTPUT FOR BENDIX WS-24TM SENSOR SHOULD BE ABOVE 0. 250 VOLTS AC AT 0. 5 RPS. [. . . ]