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Fault Isolation Procedures

2-1

Electrical Pr

etest

Electrical Pretest

Overview

The  pretest  verifi es  the  basic  electrical  inputs  before  testing 
individual circuits.

Detection

There  is  no  detection  process  specifi cally  for  the  basic  electrical 
supply. However, failures of this type are generally detected by the 
Bendix

 VORAD

®

 system or the driver as some other type of fault 

code or symptom.

Fallback

There is no fallback for the electrical pretest, however, it may affect 
other systems.

Required Tools

• 

Basic Hand Tools

• 

Digital Volt/Ohm Meter

• 

Troubleshooting Guide

Possible Causes

This pretest can be used for any of the following:

• 

Corroded Power Contacts

• 

Blown Fuse

• 

Wiring Harness

• 

Low Batteries

Harness

P2 SOD

Operator 

Display Unit

(ODU) 

Sensor

Summary of Contents for BlindSpotter BW2860

Page 1: ...Bendix BlindSpotter Collision Warning System Troubleshooting Guide Bendix BlindSpotter Collision Warning System BW2860 Formerly VOTS0032 September 2011...

Page 2: ...vehicle in neutral 2 Set the parking brake 3 Block the wheels Do not operate the vehicle if the alternator lamp is lit or if the gauges indicate low voltage Related Publications Related documents are...

Page 3: ...ion Procedures Electrical Pretest 2 1 Power Up Sequence Test 2 4 Section 3 Symptom Isolation Procedures Operator Display Unit Audible Indictor Buzzer Not Functioning 3 1 Side Sensor Not Detecting Targ...

Page 4: ...lures Perform the tests and procedures as directed by the flowchart Key On Is the Operator Display Unit lamp lit Is Driver Experiencing System Problems Test Complete Perform Electrical Pretest page 2...

Page 5: ...this type are generally detected by the Bendix VORAD system or the driver as some other type of fault code or symptom Fallback There is no fallback for the electrical pretest however it may affect oth...

Page 6: ...f voltage is outside of range Go to Step B Repair or replace batteries and charging system as required Repeat this step Step B Procedure Condition Action 1 Key off 2 Disconnect negative battery cable...

Page 7: ...y off 2 Connect negative battery cable 3 Key on 4 Measure voltage between sensor harness J2 pin 1 and ground If voltage is within 5 volts of battery voltage If voltage is outside of range Test complet...

Page 8: ...ch time the key is turned on Turn the key on and watch the Operator Display Unit ODU If lights on the ODU remain on after 15 seconds or never come on the self check has failed Fallback If self check f...

Page 9: ...rator Display Unit 1 Key on 2 Disconnect sensor harness J2 3 Key on 4 Measure voltage between sensor harness J2 pins 1 and 2 If both LED lights turn on for 5 seconds followed by the red LED for 5 seco...

Page 10: ...ion Action 1 Key off 2 Disconnect Operator Display Unit from harness J1 3 Key on 4 Measure voltage between sensor harness J2 pins 1 and 2 If voltage is between 10 and 14 volts If voltage is outside of...

Page 11: ...nnect sensor harness J2 3 Disconnect Operator Display Unit from harness J1 4 Measure resistance between J1 pin 3 and J2 pin 3 If resistance is between 0 and 0 3 ohms If resistance is outside of range...

Page 12: ...pins 1 and 2 If voltage is between 10 and 14 volts If voltage is outside of range Replace ODU Go to Step V Replace Sensor Go to Step V Step V Procedure Condition Action 1 Key off 2 Reconnect all conn...

Page 13: ...mptom is observed by the driver when 1 objects closer than ten 10 feet are detected 2 when the turn signal is activated and 3 when no audible sound is heard Fallback There is no fallback mode for this...

Page 14: ...go to the appropriate isolation procedure 1 Key off 2 Disconnect Operator Display Unit from harness J1 3 Measure resistance between sensor harness J1 pin 4 and turn signal source If the Operator Disp...

Page 15: ...ning continued Step C Procedure Condition Action 1 Key off 2 Disconnect Operator Display Unit from harness J1 3 Measure resistance between display harness J1 pins 2 and 4 If resistance is between 0 an...

Page 16: ...vate turn signal 5 Measure voltage between display harness J1 pins 2 and 4 1 Key off 2 Reconnect all connectors 3 Key on 4 Drive vehicle to determine if problem has been corrected If voltage is betwee...

Page 17: ...is observed by the driver when objects at three 3 to ten 10 feet are not detected The yellow light also continuously illuminates when the sensor has failed Fallback There is no fallback mode for this...

Page 18: ...If both LED lights turn on for 5 seconds followed by red LED for 5 seconds followed by a continuous yellow light If only the yellow LED light turns on for 5 seconds followed by a continuous yellow lig...

Page 19: ...continuously detects objects Detection The symptom is observed by the driver when sensor continuously detects targets Fallback There is no fallback mode for this symptom The Sensor will not operate p...

Page 20: ...t to go through self test and shows no targets yellow LED light should be on If both LED lights turn on for 5 seconds followed by a red LED for five 5 seconds followed by a continuous yellow light If...

Page 21: ...nuously Detecting Targets continued Step V Procedure Condition Action 1 Key off 2 Reconnect all connectors 3 Drive vehicle to determine if problem has been corrected If complaint has been repaired If...

Page 22: ...Symptom Isolation Procedures 3 10 Side Sensor Continuously Detecting Targets continued This page left blank intentionally...

Page 23: ...DU PWR ODU GND COMM PWR GND SIDE OBJECT DETECTION SENSOR P2 SOD J1 ODU ODU PWR ODU GND ODU COMM TURN SIGNAL OPERATOR DISPLAY UNIT ODU P1 INTERCONNECT HARNESS TURN SGNL IGNITION GROUND 1 2 3 4 5 6 1 2...

Page 24: ...1 2 3 4 5 6 3 4 2 1 PWR GND COMM ODU PWR ODU GND RED BLACK WHITE DK GREEN BROWN RED BLACK IGNITION GROUND DK GREEN BROWN WHITE ORANGE TURN SIGNAL ODU PWR ODU GND ODU COMM TURN SIG SIDE SENSOR OPERATO...

Page 25: ...A 3 Appendix Appendix ODU P1 2 0 70 2 3 2 1 1 0 2 0 2 8 BRACKET CAN BE BENT 15 10 FOUR 4 METAL SCREWS 4 X 0 125 THRU MTG HOLES ADHESIVE BACKING 1 6 1 2 39 3...

Page 26: ...UE TO 22 IN LBS MADE IN USA PART NUMBER 86989492 NO SERIAL 000003 FCC ID OXZSTDPREVIEW This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This de...

Page 27: ...Appendix Appendix This page left blank intentionally...

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Page 30: ...901 Cleveland Street Elyria OH 44035 1 800 AIR BRAKE www bendix com BW2860 2011 Bendix Commercial Vehicle Systems LLC a member of the Knorr Bremse Group All Rights Reserved 09 11...

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