Electrical pretest – Bendix Commercial Vehicle Systems VORAD EVT-300 TROUBLESHOOTING User Manual
Page 12

Fault Isolation Procedures
2-1
Electrical Pretest
Overview
The pretest does not relate to any specifi c fault code, but must
be completed before performing Fault Code Isolation Table
procedures. 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
- TU-FLO 400 AIR COMPRESSOR (40 pages)
- TU-FLO 400 AIR COMPRESSOR (16 pages)
- TU-FLO 501 AIR COMPRESSOR 9/04 (36 pages)
- TU-FLO 700 COMPRESSOR 10/04 (36 pages)
- BX2150 AIR COMP (36 pages)
- D-2 GOVERNOR 5/10 (4 pages)
- BRAKE CHAMBERS (4 pages)
- E-6 DUAL BRAKE VALVES 6/10 (8 pages)
- E-6 DUAL BRAKE VALVES 6/10 (6 pages)
- E-7 DUAL BRAKE VALVE (8 pages)
- TC-2 TRAILER CONTROL BRAKE VALVE (4 pages)
- R-12 RELAY VALVES 3/4 (6 pages)
- R-6 RELAY VALVE (6 pages)
- RE-4 RELAY EMERGENCY VALVE (4 pages)
- SR-2 TRAILER SPRING BRAKE VALVE (6 pages)
- TP-2 TRACTOR PROTECTION VALVE 3/04 (4 pages)
- PP-3 TRAILER SUPPLY VALVE 3/04 (4 pages)
- TP-4 TRACTOR PROTECTION VALVE 6/07 (6 pages)
- LQ-2 QUICK RELEASE VALVES 3/04 (4 pages)
- PRESSURE PROTECTION VALVES (4 pages)
- QRV QR-1 QUICK RELEASE VALVES 7/06 (4 pages)
- MV-1 MODUTROL (6 pages)
- TW-N TWO WAY CONTROL VALVE (3 pages)
- R-7 MODULATING VALVE (6 pages)
- LP-2 LOW PRESSURE INDICATORS (4 pages)
- AD-4 AIR DRYER 10/04 (24 pages)
- MANUAL SLACK ADJUSTERS (6 pages)
- AH-4 AIR HYD INTENSIFIER 4/04 (6 pages)
- DV-2 AUTO RESERVOIR DRAIN VLV 10/11 (4 pages)
- BEPA (FORD) 15X4 CAM BRAKE 5/09 (8 pages)
- DOUBLE ANCHOR PIN CAM BRAKE 5/04 (12 pages)
- COMPACT 500 9/87 (27 pages)
- INLET REG VALVE COMP 3/04 (6 pages)
- BP-1 BRAKE PROPORTIONING VALVES (6 pages)
- TU-FLO 600 AIR COMPRESSOR 9/04 (36 pages)
- ROTOCHAMBERS (4 pages)
- DD-3 SAFETY ACTUATORS (6 pages)
- E-2 BRAKE VALVES 10/11 (4 pages)
- E-5 BRAKE VALVE 3/04 (4 pages)
- TC-4 MODULATING CONTROL VALVE (5 pages)
- TC-6 BRAKE VALVE 3/04 (4 pages)
- TC-7 TRAILER CONTROL BRAKE VALVE (4 pages)
- R-8 RELAY VALVE (4 pages)
- RE6 RELAY VALVE 3/05 (12 pages)
- SR-4 SPRING BRAKE CONTROL VLV 7/07 (8 pages)