BENDIX M-21-M-22 ANTILOCK MOD ASSY Guía de instalación

MBS-2Installation GuideAUGUST 2002Heavy Duty Trailer ABSby Wabash National ®

®6MBS-2 InstallationABSKey DatesMarch 1, 1997 Tractors must be equipped to provide full time power totrailers.March 1, 1998 Newly manufactured trailer

®7MBS-2 InstallationPower Requirements for ABSFor trailers built after March 1 of 1998, the trailer wiring system must providetwo sources of power for

®8MBS-2 InstallationColor and LabelingThe malfunction indicator lamp must be yellow in color and identified with theletters “ABS” to distinguish the l

®9MBS-2 InstallationApplicationsThe performance of the Wabash MBS-2 ABS depends upon proper installationof all components. Trailer suspension, axle co

®10MBS-2 InstallationFigure 5, Wabash MBS-2 Application ChartMBS-2 MBS-2MBS-2MBS-2MBS-2MBS-2MBS-2MBS-2MBS-2CONTROLLED AXLESCONTROLLED AXLESENSED AXLES

®11MBS-2 InstallationFigure 6, Wabash MBS-2 Application Chart281UX012SPRING SUSPENSION AIR SUSPENSIONSPRING SUSPENSION AIR SUSPENSIONSPRING SUSPENSION

®12MBS-2 InstallationElectrical SystemThe Antilock Control Module (ACM) consists of an Electronic Control Module(ECM) and a Pneumatic Control Module (

®13MBS-2 InstallationPneumatic SystemThe PCM contains the pneumatic solenoids that physically control pressure inthe service line to the relay valve.

®14MBS-2 InstallationInstallation of Electrical SystemPower and Sensor CablesOne power cable, one or two sensor cables, and one accessory cable areint

®15MBS-2 InstallationFigure 9, MBS-2 Components and ConnectorsPCMECMAccessoryPowerWheelSensor281UX025

Notes, Cautions, and WarningsThis manual contains Notes, Cautions, and Warnings in addition to theassembly instructions.Notes: Provide additional comm

®16MBS-2 Installation281UX011RSCSCSMBS-2MBS-2 2S-1MIn-Axle SensorCable RoutingRS10800283RoadsideLeft10800282CurbsideRightWaveWasherBoltCurbsideIn-Axle

®17MBS-2 InstallationFigure 11, MBS-2 In-Axle Sensor Cable Routing for 2S-2M SystemsMBS-2AccessoryCableABS CablePlugs Intothe ABS Power CableFrontFron

®18MBS-2 Installation281UX010RSCSCSMBS-2RS10800283RoadsideLeftFront10800282CurbsideRightCurbsideIn-AxleSensorGrommetAxle PlugCurbsideSensorCableBlackC

®19MBS-2 Installation281UX005RSCSCSAccessoryCableMBS-2ABS CablePlugs Intothe ABS Power CableRS10800283RoadsideLeft10800282CurbsideRightCurbsideIn-Axle

®20MBS-2 InstallationCircuit RequirementsThe solenoid valves used in the Wabash MBS products allow higher airflowand require less voltage and current

®21MBS-2 InstallationPneumatic SystemMBS-2 Location and MountingThe MBS-2 can be located some distance from the relay valve. The air lineconnecting th

®22MBS-2 InstallationPlumbing InstructionsInstall the MBS-2 as follows:1. Select a suitable mounting location near the front of the bogie.2. Install t

®23MBS-2 InstallationFigure 16, MBS-2 “Downstream” Air Supply Configurations (Preferred Plumbing)Preferred Plumbing2M Axle ControlSpring Suspension w/

®24MBS-2 InstallationNOTE: If the plumbing cannot be accomplished within the five footmaximum length, the relay valve can be fed directly with a 3/8&q

®25MBS-2 InstallationFigure 17, MBS-2 “Upstream” Air Supply Configurations (Alternate Plumbing)Note: Actual Component Locations May VaryAlternate Plum

®iMBS-2 Installation281UX040Top of ECM+++MBS-1MBS-1PMBS-2No MarkingorOne of the Following:Numbers "1", "2", "3", "4

®26MBS-2 InstallationActive Wheel Speed SensorsThe new Wabash National wheel speed sensor incorporates an ApplicationSpecific Integrated Circuit (ASIC

®27MBS-2 InstallationABS System DiagnosticsInitial System CheckoutWhen the system is first powered up the ABS malfunction lamp will come ONfor two sec

®28MBS-2 InstallationTroubleshooting The SystemFigure 19, MBS-2 Flash Code DecalDIAGNOSTIC SWITCH INPUT FLASH CODE QUICK REFERENCETO READ CURRENT FAUL

®29MBS-2 InstallationEntering the flash code diagnostic modeFault identification is provided via flashes of the ABS malfunction lamp. Toenter the flas

®30MBS-2 InstallationCurrent FaultsTo access the flash code identification for a current fault, turn all power OFF tothe ABS and perform the following

®31MBS-2 InstallationAccessing Current Fault CodesTurn all power OFFYESRepeatProcedureNOPower the stop lamp circuit (red).Does the malfunction lamp li

®32MBS-2 InstallationStored FaultsTo access the flash code identification for a stored fault, turn all power OFF tothe ABS and perform the following s

®33MBS-2 InstallationFigure 22, Accessing Stored Fault CodesAccessing Stored Fault CodesTurn all power OFFPower the stop lamp circuit (red).The malfun

®34MBS-2 InstallationClearing Stored FaultsTo clear a stored fault, turn all power OFF to the ABS and perform thefollowing steps:1. Power the stop lam

®35MBS-2 InstallationFigure 23, Clearing Stored Fault CodesClearing Stored Fault CodesTurn all power OFFPower the stop lamp circuit (red).Malfunction

®iiMBS-2 InstallationContentsWabash MBS-2 ABS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1MBS-2 System Components .

®36MBS-2 InstallationMalfunction Lamp Diagnostic SwitchAll MBS-2 units have a malfunction lamp diagnostic switch. This diagnosticswitch is located in

®37MBS-2 InstallationFigure 24, Flash Code Identification TableFlash Code Fault Comments3 Curbside front sensor signal fault. Check hubcap and sensor

®38MBS-2 InstallationIn-Axle Wheel Speed Sensor and Reverse Detect FeatureThe MBS-2 system incorporates an active Hall effect in-axle wheel speedsenso

®39MBS-2 Installation2. Check for auxiliary power at the J560 connector from the tractor (centerpin). If a light tester is used, be sure to supply vol

®40MBS-2 Installation5. The following troubleshooting scheme should only be performed after allthe above troubleshooting steps have been completed. I

®41MBS-2 InstallationSensor Signal Faults (Trace)While the trailer is moving, the MBS-2 continually compares the wheel speedsignals from each sensor.

®42MBS-2 InstallationUnlike a regular fault, on the next stationary power up after the fault isrepaired, the lamp will remain ON because the fault tra

®43MBS-2 InstallationABS Malfunction and Trailer Warning Lamp TroubleshootingNOTE: Refer to the schematic on page 46 when troubleshooting the ABSMalfu

®44MBS-2 InstallationTrailer Warning LampNormal OperationLike the ABS Malfunction Lamp, the Trailer Warning Lamp will come ON fortwo seconds then go O

®45MBS-2 Installation2Continuous brake apply Check air system on service brakes or electrical wiring to stop lamp circuit. 4Roadside front b

®1MBS-2 InstallationThe Wabash National Modular Brake System –2 (MBS-2) is Wabash’s secondgeneration Trailer Antilock Brake System. All MBS-2 controll

®46MBS-2 Installation281UX004MBS-2ECMECMFront Axle Sensor Harness Rear Axle Sensor Harness Accessory CablePower Diagnostic Cable 3-Pin MicropackInside

®47MBS-2 InstallationGlossary2S-1M Two sensor, one modulator system.2S-2M Two sensor, two modulator system.4S-1M Four sensor, one modulator system.4S-

®48MBS-2 InstallationStored Faults Faults that were current faults at one time, but are nolonger present and allow the malfunction lamp to goout at po

®49MBS-2 InstallationNotes____________________________________________________________________________________________________________________________

®50MBS-2 InstallationNotes____________________________________________________________________________________________________________________________

© 2002 Wabash Technology Corp. PGI57281-0802®

®2MBS-2 InstallationFigure 1, Wabash MBS-2 Antilock Brake SystemMBS-2 System ComponentsWabash’s MBS-2 system includes unique ABS components as well as

®3MBS-2 InstallationFigure 2, MBS-2 System Components10600482 ABS Hub Cap for In-Axle Sensor with 2 or 4 yesTP Spindle (6-hole)14401905 MBS-2 Accessor

®4MBS-2 InstallationComponent Item DescriptionQuantityRequired14401359 ABS Wiring Harness 1 yes14401744 ABS Malfunction Lamp 1 yesHarness w/Di

®5MBS-2 InstallationGeneral Air Brake RequirementsFMVSS-121 identifies minimum requirements for air brake systems oncommercial vehicles built in the U