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32

SECTION H: TROUBLESHOOTING THE 

MODULATOR RELAy VALVES

Reset active DTCs by using any of 
the following methods:

•  

TABS-6 Blink Code Diagnostics.

   Go to Section C, page 27.

•  

Trailer Remote Diagnostic Unit.

   Go to Section D, page 28.

•  Hand-held or PC-diagnostic tools.

Then rerun the power-up sequence.

Go to Section A, page 25.

Bendix

®

 TABS-6

 (MOD1) Diagnostic 

Trouble Codes (DTCs)
Reset active DTCs, by depressing/
releasing the brake pedal five (5) 
times within 15 seconds of applying 
ignition power to the trailer.
Then rerun the power-up sequence.

Go to Section A, page 25.

If MOD1 DTCs continue after the 
power-up, replace the module.
Continue if, after a power-up, the 
trailer-mounted ABS indicator lamp 
turns “OFF”. 

The wiring to the modulator may be 
reversed or the WSS connections 
may be incorrect.

Pin 10 is MOD3 release
Pin 4 is MOD3 Common
Pin 16 is MOD3 Hold

Looking into Modulator 

Connector Pins:

 Pin 1 (Release)

Pin 2 (Common)

Pin 3 (Hold)

Looking into Wire Harness 

Connector:

Premium Bendix

®

 TABS-6

 Module Wire Harness for 

Bendix

®

 BR9235

 Modulator Valve Connector

(Optional)

Pin 9 is MOD2 release
Pin 3 is MOD2 Common
Pin 15 is MOD2 Hold

Содержание TABS-6 TRAILER ABS MODULE

Страница 1: ...filter to help prevent foreign material from entering the control port TABLE OF CONTENTS PAGE Introduction 1 General Safety Guidelines 2 Components 2 Mounting Configurations 3 PLC Communications 3 Wi...

Страница 2: ...th care and verify that no pressure is present Never remove a component or plug unless you are certain all system pressure has been depleted Use only genuine Bendix brand replacement parts components...

Страница 3: ...S indicator lamp Diagnostic tools are available that detect the presence of a PLC signal and perform further system diagnostics directly on the power line For more information on these diagnostic tool...

Страница 4: ...L SAR 4 Pin Diagnostic 5 Pin Power and Indicator Lamp POWER WL 3 Pin Modulator 3 MOD3 Optional 3 Pin Modulator 2 MOD2 Auxiliary Optional 5XXX To ECU or Pigtail To Bendix TABS 6 Module Pigtail To Diagn...

Страница 5: ...r leads to jounce lines 3 Gently push DO NOT STRIKE the sensor into the mounting block hole until it bottoms out on the face of the tone ring Secure the cable lead wire to the knuckle axle housing thr...

Страница 6: ...modulator relay valves are available with nominal crack pressure of 4 5 0 5 psi Previous models of Bendix TABS 6 modulator relay valves came with a nominal crack pressure of 3 0 0 5 psi Installation...

Страница 7: ...tch Pad feature which allows the customer or end user to store up to 756 bytes of information This information can then be read using the Bendix ACom Diagnostic Software version 6 5 and higher If addi...

Страница 8: ...ngle modulator relay valve to control one or more wheels on a given vehicle side In the case of an unbalanced braking surface the side control will individually control wheels on each side just under...

Страница 9: ...gned However repeated occurrences of a given trouble code can cause the code to latch that is be retained as active even if the condition is only intermittent Once the code is latched a manual reset w...

Страница 10: ...ink code diagnostics can also be used to reset active DTC codes With Ignition Power Applied Cycle Brake Light Power Blink Code Action 3 times Display Active DTCs 4 times Display Inactive DTCs 5 times...

Страница 11: ...nic Control Unit ECU has the proper tire size settings 3 5 SR Tire diameter out of range 2 13 4 5 SAL Tire diameter out of range 3 13 5 5 SAR Tire diameter out of range 4 13 1st Digit Sensors 2 2 Sens...

Страница 12: ...3 MOD3 ABS modulator dynamic error 9 8 4 MOD2 Valve configuration error 8 13 Verify correct ABS configuration using blink codes or other diagnostic tools If needed reset to the defaultABS configuratio...

Страница 13: ...wiring or components as required TRAILER MOUNTED ABS INDICATOR LAMP 13 1 ABS lamp shorted or open 81 3 4 5 6 or 12 Check for corroded damaged wiring or connectors between the ECU and ABS Indicator La...

Страница 14: ...USB Cable Noregon Adapter J2497 PLC or J1939 Lap Top Computer FIGURE 10 THE BEndIx TRAILER REmOTE dIAGnOSTIC UnIT TRdU LED lights illuminate Diagnostic Trouble Codes 10 LEDs FIGURE 10 LAP TOP COmPUTER...

Страница 15: ...eld over the switch for more than six 6 seconds but less than 11 seconds the Bendix ABS self configuration command is sent Additionally it is recommended at the end of any inspection that the user swi...

Страница 16: ...f any troubleshooting where the service brakes are slow to apply and other possible causes have been ruled out SERVICE REPLACEMENT OF OTHER ABS CONTROLLERS The Bendix TABS 6 module is designed to be u...

Страница 17: ...E tape is not approved and will void the Bendix ABS TRSP valve warranty 1 Before performing leak tests block the wheels 2 Fully charge the air brake system and verify proper brake adjustment 3 Make se...

Страница 18: ...very 18 inches 9 Apply a moderate amount of non conductive electrical grease to each connector pin before reconnecting MISCELLANEOUS MAINTENANCE GLAD HAND MAINTENANCE NEVER POUR ANy LIQUIDS alcohol an...

Страница 19: ...E MOD1 2 COMMON MOD2 HOLD MOD3 RELEASE MOD3 COMMON MOD3 HOLD SENSOR ADD LEFT SAL SENSOR ADD LEFT SAL J1587 B J1587 A J1587 GROUND J1587 VOLTAGE AUx6 2 13 1 7 14 8 16 4 10 15 3 9 17 11 5 12 6 18 2 1 2...

Страница 20: ...C NC D Warning Lamp E Ground TABS 6 2S 1M DOLLY AXLE CONTROL Trailer Chassis Harness Trailer ABS Pigtail Harness 5 PIN CONNECTOR Ignition Power Brake Light Power Ground 7 PIN CONNECTOR SUPPLY LINE CON...

Страница 21: ...b Side Left Road Side Bendix TABS 6 MOD1 Trailer ABS Module Bendix SR 5 Trailer Spring Brake Valve Bendix WS 24 Wheel Speed Sensor SR Bendix WS 24 Wheel Speed Sensor SL Bendix BR9235 MOD2 Trailer ABS...

Страница 22: ...ule Bendix SR 5 Trailer Spring Brake Valve Troubleshooting System Schematics continued Installation Guidelines for the Bendix TABS 6 4S 2M Axle ABS Configuration MOD1 Bendix TABS 6 ABS Unit controls t...

Страница 23: ...tem Schematics continued Installation Guidelines for the Bendix TABS 6 4S 3M Side Axle ABS Configuration MOD1 Bendix TABS 6 ABS Unit controls the left road side wheel s of a primary axle s MOD2 Bendix...

Страница 24: ...ircuit DTC is found isolate the area needing repair by repeating the measurements at all connections in the affected circuit towards the modulator wheel speed sensor etc No voltage or resistance measu...

Страница 25: ...AMP Troubleshoot the trailer mounted ABS indicator lamp circuitry Go to Section E page 29 Troubleshoot the trailer mounted ABS indicator lamp circuitry Go to Section E page 29 The Bendix TABS 6 module...

Страница 26: ...trailer ABS indicator lamp remains ON with no trailer connected troubleshoot the dash mounted trailer lamp circuit on the tractor If the trailer ABS lamp remains ON with a trailer connected rerun the...

Страница 27: ...he default ABS con guration and power up to initiate auto configuration 6 Power 1 Over voltage Go to Section F Power Supply 2 Low voltage Go to Section F Power Supply 3 Excessive power line resistance...

Страница 28: ...s Dynamic modulator DTCs The red M1 M2 and or M3 LED is on to indicate a DTC with an ABS modulator The example above shows the LEDs illuminated when there is a DTC for a second ABS modulator MOD2 The...

Страница 29: ...U Go to Section F page 30 Go to Section A page 25 Go to Section A page 25 Go to Section A page 25 Go to Section A page 25 27 28 5 or 18 pin ECU Looking into Standard Bendix TABS 6 Module Wire Harness...

Страница 30: ...und pin of the ECU connector 5 or 18 pin ECU Go to Section A page 25 Measure the loaded voltage across a type 1157 brake light bulb Looking into Premium Bendix TABS 6 Module Wire Harness ECU Connector...

Страница 31: ...agnostics Go to Section C page 27 Trailer Remote Diagnostic Unit Go to Section D page 28 Hand held or PC diagnostic tools Then check for Dynamic WSS DTCs see left colum Then rerun the power up sequenc...

Страница 32: ...applying ignition power to the trailer Then rerun the power up sequence Go to Section A page 25 If MOD1 DTCs continue after the power up replace the module Continue if after a power up the trailer mou...

Страница 33: ...on the production line or in the field 5 Pin ECU Pin Out Bendix Part Number 18 Pin ECU Pin Out 2 Pin Sensor Pin Out and Routing Info Bendix Part Number 2 Pin Sensor Pin Out and Routing Info Bendix Pa...

Страница 34: ...34 NOTES...

Страница 35: ...35 NOTES...

Страница 36: ...15 Bendix Commercial Vehicle Systems LLC a member of the Knorr Bremse Group All Rights Reserved 05 15 Log on and Learn from the Best On line training that s available when you are 24 7 365 Visit www b...

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