Bendix Commercial Vehicle Systems VORAD VS-400 INSTALLATION NOTES - Manual (Page 47)

General Information
45
Appendix 4D, 4E
Step Procedure
D 1. Vehicle Ignition: Key-ON, Engine-OFF.
2 . Measure for ignition voltage on pins 10 and 9 on the harness connector .
a . If the voltage is within 0 .6 volts of the battery voltage measured in Step A .
i . Proceed to Step E .
b . If voltage is less than 0 .6 volts of the battery voltage measured in Step A or open .
i. Test Failed. Check component fuse. Troubleshoot power supply to the FLR for open / corroded
connections or shorts to ground and repeat Step .
Verifying Component Power Up Timing
Verify the DIU and FLR are wired to the same ignition source . If either component is wired to a secondary ignition source with a delay, one
of the components may set a Diagnostic Trouble Code (DTC) as a result of the other(s) delayed power cycle .
Step Procedure
E 1. Key-OFF. Let the truck sit for two minutes to allow time for the ECU's to completely power down.
2 . Disconnect the 10-way connector from the back of the FLR and add a test lamp to ignition power pin 10 .
If the test lamp requires a ground pin, use pin 9 or chassis ground .
Be careful not to spread pins on the FLR harness connector while performing this test .
3 . Disconnect the 8-way connector from the back of the DIU and add a test lamp to power pin 4 . If the test lamp
requires a ground pin, use pin 5 or ground the lamp to chassis ground .
Be careful not to spread pins on the DIU harness connector while performing this test .
4 . While viewing both test lamps, turn the ignition key on to verify that both lamps light at the same time .
a . If there is a noticeable delay before one lamp lights, the power source for the delayed light could
be a secondary delayed ignition supply .
i . Correct the wiring by connecting the appropriate component to the main ignition power
supply bus .
b . If the lamps light simultaneously .
i . Test Passed .
5 . Test Complete .
CAUTION
CAUTION