BENDIX EC-30 ABS-ATC CONTROLLER Manual
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BENDIX EC-30 ABS-ATC CONTROLLER Manual

BENDIX EC-30 ABS-ATC CONTROLLER Manual

Abs / atc controller
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®
®
™
Bendix
EC-30
18-pin
Connector
30-pin
Connector
™
FIGURE 1 - EC-30
CONTROLLER

INTRODUCTION

®
™
The Bendix
EC-30
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-30
optimize slip on all vehicle wheels. The EC-30
provides the vehicle with improved stability and steerability
during braking. The EC-30
stopping distance on most surfaces.
In addition to the ABS function, the EC-30
be configured to provide an ATC (automatic traction control)
feature. Bendix ATC can improve vehicle traction during
acceleration on adverse road conditions. ATC can utilize
engine torque limiting and/or differential braking to improve
vehicle traction.
ABS / ATC Controller
™
controller is designed to
™
controller
™
controller will also reduce vehicle
™
controller can
Mounting Inserts
(4 Places)
Part Number
Label
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . PAGE
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
™
™
Controller With PLC . . . . . . . . . . . . . . . . . . . . . . 3
™
Controller Inputs . . . . . . . . . . . . . . . . . . . . . . . . 4
™
Controller Outputs . . . . . . . . . . . . . . . . . . . . . . . 4
Power-Up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ABS Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ATC Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Auto-Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
™
™
Controller Self-Configuration . . . . . . . . . . . . . . 8
Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
ABS Partial Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
™
Controller Diagnostic Display . . . . . . . . . . . . . . 9
Blink Code Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 10
Bendix DCI Diagnostic Tool . . . . . . . . . . . . . . . . . . . . . 14
Bendix ABS Diagnostic Software . . . . . . . . . . . . . . . . . 15
NEXIQ (MPSI) Bendix Cartridge . . . . . . . . . . . . . . . . . . 15
Contacting Bendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Safe Maintenance Practices . . . . . . . . . . . . . . . . . . . . . 15
ABS and ATC Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
LED Diagnostic
Display
™
Controller Assembly . . . . . . . . 16
™
Controller . . . . . . . . . . . . . . . 16
1

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Summary of Contents for BENDIX EC-30 ABS-ATC CONTROLLER

  • Page 1: Table Of Contents

    NEXIQ (MPSI) Bendix Cartridge ....15 Contacting Bendix ......15 Safe Maintenance Practices .

  • Page 2: Components

    The EC-30 controller has been designed to replace the EC-17 ™ and the EC-16 ™ controllers as the standard Bendix ABS controller for OEM and aftermarket installations. The ™ EC-30 controller has a black plastic enclosure similar to ™ ™...

  • Page 3: Controller Hardware Configurations

    (blue wire of the J560 connector) to the tractor using PLC communications. The PLC signal is usually broadcasted by the trailer ABS ECU. The application of PLC technology for the heavy vehicle industry is known as PLC4Trucks. The Bendix ® EC-30 ™...

  • Page 4: Controller Inputs

    ™ WS-20 The modulator hold and exhaust solenoids are activated to Sensor precisely modify the brake pressure during ABS. The hold FIGURE 5 - BENDIX ® WS-20 ™ AND WS-24 ™...
  • Page 5 ™ communications is lost between the EC-30 controller and ® ® as Bendix ABS Diagnostic Software, the Bendix DCI hand the vehicle dash controller, the dash controller will activate ™ held tool and the MPSI ProLink. The EC-30 controller the ABS warning lamp.

  • Page 6: Power-Up Sequence

    POWER-UP SEQUENCE Diagnostic LEDs at Power-Up At power-up, the diagnostic LEDs all turn on, then display ABS Warning Lamp at Power-Up the configuration for sensors and the ATC. After showing At power-up without detected faults, the ABS warning lamp the configuration, only the green VLT LED will stay on. However, if a fault is detected, the faulted component will be turns on for 2.5 seconds and then turns off.

  • Page 7: Abs Operation

    ATC active/warning lamp to advise the driver that drive-wheel Bendix ABS uses wheel speed sensors, ABS modulators spin is occurring. When ATC is no longer active, the ATC and an ECU to control either four or six wheels. By monitoring active/warning lamp turns off.

  • Page 8: Auto-Calibration

    Tire size (rolling radius) setting information can be retrieved EC-30 ™ Controller Self-Configuration Procedure or adjusted by using Bendix ABS Diagnostics Software or Verify that all ECU, communication, sensor, ABS modulator MPSI. and ATC modulator connectors are in place and then turn If issues occur with the ATC function following a tire size the ignition power on.

  • Page 9: Abs Partial Shutdown

    ABS PARTIAL SHUTDOWN Reading a Fault Depending which component the fault is detected on, the When a fault is detected, the EC-30 ™ controller identifies the faulted component with the diagnostic LEDs. When a ABS and ATC functions may be fully or partially disabled. ™...

  • Page 10: Blink Code Diagnostics

    BLINK CODE DIAGNOSTICS Display Fault Code History To display history fault codes, press the blink code switch The EC-30 ™ controller provides diagnostic and configuration two times. Following activation, there will be a three second functions using blink code diagnostics. When the blink code delay, followed by a blink code display of all history fault ™...
  • Page 11 ™ CHART 7 - EC-30 CONTROLLER BLINK CODE DEFINITIONS (1 of 3)
  • Page 12 Sensor output low or missing during vehicle operation above 10 mph. Verify condition of tone ring mounting. Adjust speed sensor to contact tone ring. Rotate wheel and verify: (a) for WS-20 speed sensor that output is minimally 0.8 VAC @ 1 RPS or (b) for WS-24 speed sensor that output is minimally 0.250 VAC @ 0.5 RPS .
  • Page 13 Check for corroded or damaged modulator wiring and connections. Verify for M-21, M-22, or M-30 that resistance between pins: Hold to Common is 3.5 to 5.0 Ohms, Exhaust to Common is 3.5 to 5.0 Ohms, Exhaust to Hold is 7.0 to 10 Ohms. For M-32 and M-32QR, Verify that resistance between pins: Hold to Common is 4.9 to 5.5 Ohms, Exhaust to Common is 4.9 to 5.5 Ohms, Exhaust to Hold is 9.8 to 11 Ohms.

  • Page 14: Bendix Dci Diagnostic Tool

    ™ controller. See LEDs. An example is FRT-RHT-SEN. When these three figure 10 for illustration. The Bendix DCI has the same 10 LEDs are on, this is an indication of a fault on the front diagnostic LEDs as the EC-30 ™...

  • Page 15: Bendix Abs Diagnostic Software

    Data contained in the OEM scratchpad area is protected by a special password and can not be revised in The Bendix on-line contacts guide will make it easy for you to find the Bendix contacts you need. From this page, you can navigate to technical support contacts, service engineers, Bendix account managers, international contacts and more.

  • Page 16: Safe Maintenance Practices

    However, most configuration all reservoirs before beginning ANY work on the settings can be altered using the Bendix ABS Diagnostic vehicle. If the vehicle is equipped with an AD-IS ™...

  • Page 17: Controller Component Connectors

    ABS Component Connector Wire Wire Seal/ Terminal Terminal Terminal Plug Lock Crimp Tool ™ EC-30 Controller 12034398 12103881 Plug 12094429 (18-16 GA) 12065266 Harness 30-pin Packard Metri-Pack 150 Series ™ EC-30 Controller 12040921 Harness 12155975 18-pin Packard Metri-Pack 150 Series ABS Modulator 12040977 12077411...

  • Page 18: Controller System Schematic

    FIGURE 13 - EC-30 ™ CONTROLLER SYSTEM SCHEMATIC...

  • Page 19: Abs And Atc Wiring

    Section B - Power-up sequence - Trailer ABS warning lamp harnesses is specific to the circuit function, but 16 gauge GXL is most common. Refer to BW-106-A, Bendix ABS Section C - ABS warning lamp Application Guideline, for specific wire harness application Section D - ATC active/warning lamp information.
  • Page 20 ™ SECTION A - EC-30 CONTROLLER POWER-UP SEQUENCE - ABS WARNING LAMP AND ATC ACTIVE/WARNING LAMP Turn ignition on and observe the ABS ABS Warning Lamp at Power-Up warning lamp. The ABS warning lamp should ABS warning lamp immediately illuminate when ignition does not come on.
  • Page 21 ABS unit and follow off. recommended steps for diagnosis and ® ™ repair. For Bendix MC-30 trailer ABS controller assembly, see SD-13-4834. If the trailer ABS lamp stays on with no trailer connected, go to Section E.
  • Page 22 SECTION C - TROUBLESHOOTING THE ABS WARNING LAMP ABS Warning lamp did not ABS Warning lamp stays on with no ™ illuminate during the EC-30 red LEDs on. controller power-up sequence. See Note this page Turn the ignition off and disconnect ™...
  • Page 23 SECTION D - TROUBLESHOOTING THE ATC ACTIVE/WARNING LAMP ATC Active/Warning lamp did not ATC active/warning lamp stays on ™ illuminate during the EC-30 with no red LEDs on. controller power-up sequence. ™ Verify that the EC-30 controller is Verify that the ATC enable/disable configured for ATC by observing the switch is in the enable position.
  • Page 24 SECTION E - TROUBLESHOOTING THE TRAILER ABS WARNING LAMP Trailer ABS Warning lamp did not Trailer ABS lamp stays on with no ™ illuminate during the EC-30 trailer connected to towing vehicle. controller power-up sequence. See Note this page With ignition off, remove the 30-pin ™...
  • Page 25 SECTION F - DIAGNOSTIC LED QUICK REFERENCE ™ Comparing your EC-30 controller to the following images, identify the fault indicated by the diagnostic LEDs and follow the instructions in the related troubleshooting section. Wheel Speed Sensor Fault Power The red SEN LED is on to indicate a System OK - A solid green VLT LED fault condition with a wheel speed indicates proper voltage is reaching the...
  • Page 26 ™ SECTION G - TROUBLESHOOTING POWER TO THE EC-30 CONTROLLER Turn the ignition off and disconnect the ABS Warning lamp is on and green 30-pin connector from the EC-30 ™ VLT LED is off or flashing. controller. Due to corrosion, damage or poor Turn the ignition on and measure voltage termination, the wiring and/or between ignition power (pins B1, K2, K3)
  • Page 27 SECTION H - TROUBLESHOOTING WHEEL SPEED SENSORS Turn ignition off and remove the 30-pin or SEN LED and ABS warning lamp ™ 18-pin connector from the EC-30 controller. are on. Static Wheel Speed Sensor Faults - Using a volt/ohm meter to measure the connector pins of the faulted sensor, verify 1500-2500 OHMS across sensor connector pins.
  • Page 28 SECTION I - TROUBLESHOOTING ABS MODULATORS MOD LED and ABS warning lamp Turn the ignition off and remove the are on. 30-pin or 18-pin connector from the ™ EC-30 controller. Static ABS Modulator Faults. For (a) M-30 modulator verify 3.5 to 5.0 OHMS across Hold to Common connector pins, 3.5 to 5.0 OHMS across Exhaust to Common connector pins, and 7.0 to 10.0 OHMS across Exhaust to Hold connector pins, or for...
  • Page 29 SECTION J - TROUBLESHOOTING THE ATC MODULATOR TRC and MOD LEDs and ATC Turn the ignition off and remove the ™ active/warning lamp are on. 18-pin connector from the EC-30 controller. Verify 10.0 to 12.0 OHMS across the ATC modulator leads. Verify no continuity from ATC modulator connector pins to ground.

  • Page 30: Serial Communication

    EC-30 ™ controller. appropriate serial communications Also remove the 2- or 3-pin connector link. The Bendix ABS Diagnostic at engine controller. Software program will be needed to verify this level of configuration. If the ™ EC-30...
  • Page 31 NOTES...
  • Page 32 BW2160 © 2004 Bendix Commercial Vehicle Systems LLC All rights reserved. 3/2004. Printed in U.S.A.

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