Bendix-commercial-vehicle-systems EC-30 ABS/ATC CONTROLLER 2/08 User Manual

1 SD-13-4815 TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . PAGE Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10BLINK CODE DIAGNOSTICSThe EC-30™ controller provides diagnostic and confi guration functions using blink code diagnostics. When the blink code mode i

11CHART 7 - EC-30™ CONTROLLER BLINK CODE DEFINITIONS (1 of 3)

12CHART 7 - EC-30™ CONTROLLER BLINK CODE DEFINITIONS (2 of 3)Sensor output low or missing during vehicle operation above 10 mph. Verify condition of t

13CHART 7 - EC-30™ CONTROLLER BLINK CODE DEFINITIONS (3 of 3)Check for corroded or damaged modulator wiring and connections. Verify for M-21, M-22, o

14BENDIX DCI DIAGNOSTIC TOOLThe Bendix Diagnostic Communication Interface (DCI) is a hand held diagnostic tool that was designed for use with the Bend

15BENDIX ABS DIAGNOSTIC SOFTWAREBendix ABS Diagnostic Software is a RP-1210 compliant PC-based program that provides technicians with the highest leve

16SAFE MAINTENANCE PRACTICESWARNING! PLEASE READ AND FOLLOW THESE INSTRUCTIONS TO AVOID PERSONAL INJURY OR DEATH:When working on or around a vehicle,

17CHART 8 - EC-30™ CONTROLLER COMPONENT CONNECTORS ABS Component Connector Wire Wire Seal/ Terminal Terminal Terminal Plug Lock Crim

18FIGURE 13 - EC-30™ CONTROLLER SYSTEM SCHEMATIC

191. Position and secure the EC-30™ controller in the original mounting orientation using the four hex head bolts. Torque the hex head EC-30™ contro

2 ECU Enclosure ABS Warning Lamp Model Power-Up Sequence EC-30™ Plastic with Plastic 2.5 seconds on, then off Controller Mounting Inserts

20SECTION A - EC-30™ CONTROLLER POWER-UP SEQUENCE - ABS WARNING LAMP AND ATC ACTIVE/WARNING LAMPVerify that the ATC active/warning lamp turns off afte

21SECTION B - EC-30™ CONTROLLER POWER-UP SEQUENCE -TRAILER ABS WARNING LAMPTrailer ABS Warning Lamp at Power-UpVerify that a PLC trailer is connected

22SECTION C - TROUBLESHOOTING THE ABS WARNING LAMPABS Warning lamp did not illuminate during the EC-30™ controller power-up sequence.With a volt/ohm m

23SECTION D - TROUBLESHOOTING THE ATC ACTIVE/WARNING LAMPATC Active/Warning lamp did not illuminate during the EC-30™ controller power-up sequence.Wit

24SECTION E - TROUBLESHOOTING THE TRAILER ABS WARNING LAMPTrailer ABS Warning lamp did not illuminate during the EC-30™ controller power-up sequence.W

25SECTION F - DIAGNOSTIC LED QUICK REFERENCEComparing your EC-30™ controller to the following images, identify the fault indicated by the diagnostic L

26SECTION G - TROUBLESHOOTING POWER TO THE EC-30™ CONTROLLERDue to corrosion, damage or poor termination, the wiring and/or connectors may be limiting

27SECTION H - TROUBLESHOOTING WHEEL SPEED SENSORS123H3 Right Front WS -H2 Right Front WS +J2 Left Front WS -J1 Left Front

28SECTION I - TROUBLESHOOTING ABS MODULATORSK J H G F E D C B AH1 Left Front Mod CommonF1 Left Front Mod ExhaustG1 Left Front Mod HoldC1 Right F

29SECTION J - TROUBLESHOOTING THE ATC MODULATORVerify 10.0 to 12.0 OHMS across the ATC modulator leads. Verify no continuity from ATC modulator connec

3EC-30™ CONTROLLER HARDWARE CONFIGURATIONSThe EC-30™ controller ABS ECU is available in different hardware confi gurations in order to support various

30SECTION K - TROUBLESHOOTING EC-30™ CONTROLLERSERIAL COMMUNICATIONFor vehicles using J1939, verify continuity between the 30-pin connector (pins C3,

31NOTES

32BW2160 © 2008 Bendix Commercial Vehicle Systems LLC All rights reserved. 2/2008. Printed in U.S.A.

4FIGURE 5 - BENDIX® WS-20™ AND WS-24™ WHEEL SPEED SENSORSEC-30™ CONTROLLER INPUTSPower and GroundPower is supplied to the EC-30™ controller from the i

5Trailer ABS Warning LampEC-30™ controller models with PLC can be confi gured to control a trailer ABS warning lamp (located in the dash) that indicate

6CHART 4 - LED POWER-UP DISPLAY OF EC-30™ CONTROLLER CONFIGURATION LED Power-Up Sequence LEDs 1st When power is applied All LEDs Illuminate

7ABS OPERATIONBendix ABS uses wheel speed sensors, ABS modulators and an ECU to control either four or six wheels. By monitoring the wheel slip during

8AUTO-CALIBRATIONAuto-calibration is a feature that allows the EC-30™ controller to compensate for tire size changes throughout the life of the vehicl

9ABS PARTIAL SHUTDOWNDepending which component the fault is detected on, the ABS and ATC functions may be fully or partially disabled. Even with the