Bendix Commercial Vehicle Systems VORAD VS-400 INSTALLATION NOTES - Manual (Page 14)

12
Pretest Procedures
Step Procedure
D 1. Vehicle Ignition: Key-ON, Engine-OFF.
2 . Measure for J1939 data voltage on pins 7 and 5 of the DIU harness connector .
(J1939 High to Ground)
a . If the voltage is fluctuating between 2 to 5 volts .
i .
Proceed to Step E .
b . If the voltage is a constant at 0 volts .
i. Test Failed. Check for open/loose connections in the vehicle’s J1939 data link harness.
(See Note)
Note: Refer to vehicle OEM repair manual or contact the OEM for more information on the J1939 data link harness .
Pin # Description
J1-5 Chassis Ground
J1-7 J1939+
7
Chassis
Ground
5
J1939-
J1939+