BENDIX VORAD VS-400 User Manual

General Information
43
Appendix 4A
4. Component Power Supply Test
Overview
The base Bendix
™
VORAD
®
VS-400 system consists of two components, the FLR and DIU. Both should be powered by the main ignition
power supply (12 Vdc). If one of these components is incorrectly connected to constant battery power or a secondary ignition source other
than the main ignition power supply bus, there is the potential for J1939 communication Diagnostic Trouble Code (DTC) between the FLR
and the DIU. These include, but are not limited to, Diagnostic Trouble Codes (DTCs) 32 and 33. If these Diagnostic Trouble Codes (DTCs)
appear after the installation of a new VS-400 system or if the system is suspected of having this problem, perform this test to verify proper
ignition power source to the FLR and the DIU.
Verifying Ignition Power to the DIU
Step Procedure
A 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 B.
b. If 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 or shorted to a battery power source. Correct the
wiring by connecting the DIU to the main ignition power supply bus and repeat Step.

BENDIX VORAD VS-400 Specifications

General

Brand	BENDIX
Model	VORAD VS-400
Category	Automobile Accessories
Language	English