Bendix Commercial Vehicle Systems VORAD VS-400 INSTALLATION NOTES User Manual
Page 12
Product Safety Information
10
Pretest Procedures
Step
Procedure
B
1. Vehicle Ignition: Key-OFF, Engine-OFF.
2 . Disconnect the 8-way connector from the back of the VS-400 Driver Interface Unit (DIU) .
3 . Measure for zero voltage on pins 4 and 5 on the harness connector .
a .
If the voltage is 0 .5 volts or less .
i .
Proceed to Step C .
b .
If the voltage is greater than 0 .5 volts, but less than battery voltage .
i .
Test Failed . Check DIU power supply wiring for sources of stray voltage or shorts to voltage .
c .
If the voltage is within 0 .6 volts of the battery voltage measured in Step A .
i .
Test Failed . The DIU is improperly wired to battery power . Correct the wiring by connecting the FLR
to ignition power and repeat Step .