BENDIX BW1982 User's Manual
Contents
1. If the LED s shown below are illuminated Check the vehicle WIRING HARNESS CONNECTOR for the proper resistance with system power off ignition off KJ HGF EDCBA Pins A1 A2 A3 are Grounds A a F RIGHT 1 wor Sone Hes FRONT 2 4500 2500 Ohms RESET SENSOR 3 5 LEFT Ji J2 0000 8 Ront P a EN RESET SENSOR RIGHT 1 C1 D1 3 5 5 0 Ohms FRONT 2 C1 E1 3 5 5 0 Ohms MODULATOR 3 D1 E1 7 0 10 0 Ohms LEFT 1 H1 G1 3 5 5 0 Ohms FRONT 2 H1 F1 3 5 5 0 Ohms MODULATOR 3 G1 F1 7 0 10 0 Ohms aa aa N B2 B3 C3 D3 A A TRACTION 1 O 31922 J1939 ENGINE 2 O00 OODE ENGINE SERIAL NOT RESET SERIAL e COMMUNICATING See Owner s Manual Orient flat side of connector g 2 2 ae 1500 Se Ole RESET SENSOR LEFT 2 REAR 1500 520 ins RESET SENSOR RIGHT A1 B1 3 5 5 0 Ohms REAR A1 C1 3 5 5 0 Ohms MODULATOR B1 C1 7 0 10 0 Ohms LEFT f 3 f REAR pi coo RESET MODULATOR E1 D1 7 0 10 0 Ohms 30000 TRACTION Mo RESET Contacts above should have no continuity to ground except contacts A1 A2 and A3 of 30 pin connector Contacts B1 K2 and K3 supply power to the EC 17 BW1982 Honeywell 2 2000 Printed in U S A 30 Pin Connector KJ HGF EDCBA aA AA 1 OO 2 OOo 3 OO 18 Pin Connector FED CBA 7 Most Commonly Encountered Problems That Result In LEDs Being Illuminated Repair or Replace Components As Necessary Abraded or cut wires in the convoluted tubin2. SERVICE NEEDED When an issue is detected at start up the dash lights will flash and remain illuminated at the completion of the chuff test When a dynamic wheel speed issue is detected the dash lamps will illuminate as early as 10 mph indicating a wheel speed issue The dash lamps notify the driver that all or part of the ABS function has been disengaged and standard air braking is in effect The ECU will automatically reset most intermittent codes self healing In most instances if the intermittent code has occurred more than five times the issue will be latched and require a magnetic reset The area of concern will always be identified in the diagnostic display TRACTION FUNCTION The ECU monitors wheel spin When a spin condition exist the traction dash lamp will blink continuously indicating the traction control system is active IF SERVICING THE VEHICLE DRIVE LINE TRACTION SERVICE ENABLE DISABLE SWITCH MUST BE DISABLED The traction dash lamp will be illuminated RESET The ECU can be magnetically reset by momentarily holding a magnet against the RESET area on the controller SELF CONFIGURING During self configuring the ECU will automatically determine the number of sensors and if electronic engine equipped The ECU will also determine if the vehicle is traction equipped ONLY if the traction switch is toggled prior to magnetically Self Configuring Holding a magnet against the RESET area for 30 seconds completes Self Configuring
3. operation J1587 connector links DCI to vehicle e Bendix ACOM kit 5004892 Ordering e Bendix DCI Kit 5004893 Information Kent Moore PCMCIA card J 38500 2400 e SPX PCMCIA Card ZTSE4455 For Additional Information Call 1 800 AIR BRAKE 1 800 247 2725 Visit www bendix com
4. TROUBLESHOOTING EC 17 ANTILOCK SYSTEMS WITH OPTIONAL TRACTION CONTROL ANTILOCK TRACTION CONTROLLER Ref SD 13 4788 TRACTION SERVICE Enable Disable LOCATED IN DASH AREA i F When Servicing DRIVELINE Disable TRACTION Switch OFF DASH LAMPS WHEEL SPIN RESET EC 17 DIAGNOSTIC DISPLAY Exciter Ty Wrap Ring ANTILOCK MODULATOR ASSEMBLY VEHICLE ENGINE MODULE Ref SD 13 4793 1587 DIAGNOSTIC Angle Mounting ie es aid CONNECTOR E A c TYPICAL Connector WHEEL SPEED REAR AXLE SENSOR CONNECTOR Resistance Across Pins 1500 2500 Ohms Ref SD 13 4754 MODULATOR M 22 view Straight Sensor HOLD TO SOURCE C B READ 23 5T0 5 OHMS TYPICAL EXHAUST TO SOURCE A B READ 3 5 T0 5 OHMS FRONT EXHAUST TO HOLD A C READ7 TO 10 OHMS AXLE SOURCE TO GROUND B NO CONTINUITY INSTRUCTIONS START UP When power is applied the Antilock and Traction dash warning lamps will illuminate while the electronic Control Unit ECU is performing a Self Check and Chuff test The ABS and Traction Control modulators will be energized during the Chuff test At the completion of the Chuff test the ABS and Traction dash lamps will flash and extinguish It is recommended during the initial start up that the brakes be applied to audibly hear the modulators exhaust during the Chuff test
5. g near frame clamps 2 Cut or corroded wires near sharp frame members and frame mounted modulators Wire jacket worn through from overlapping sensor and modulator wires near frame members and frame mounted modulators Corroded connectors and connections not properly sealed or damaged seals Damaged connector latches or connectors not completely seated to mating assemblies Terminals not completely latched or seated into connectors Excessive sensor air gap sensor clip tension or excessive bearing end play gently push sensor against wheel hub or readjust bearings 8 Damage to exposed wires exiting or entering the convoluted tubing 9 Worn chipped or damaged sensor or modulator 10 Non functioning antilock controller w o gt N O If Traction Dash Lamp Only Illuminated Check Repair These Items First 1 Traction enable disable switch in wrong position 2 Loss of traction engine serial communication check service manual 3 Traction solenoid not connected or exceeds resistance range For units without LED s use the Bendix Diagnostic Communications Interface DCI EC 17 Computer Analysis gt Locate and p F ACOM diagnostic diagnose current i computer program f Diagnostic a Communications faults Test components Interface DCI Used alone or with gt Obtain view and store vehicle fault history lt ACOM computer Record JN program performance during vehicle
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