BENDIX VORAD VS-400 - Page 17

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Pretest Procedures
Step Procedure
G 1. VehicleIgnition:Key-OFF.
2. Measure the resistance across pins 7 and 5 (J1939 High to Ground.)
3. Measure the resistance across pins 6 and 5 (J1939 Low to Ground.)
   a. Ifbothresistancesaregreaterthan100Kohmsoropen(InniteResistance).
i. Proceed to Step H.
   b. Ifeitherresistanceisbetween0to100Kohms.
i. Test Failed. Check for shorted connections in the vehicle’s J1939 data link harness.
Unplug all J1939 data link components from the data link to isolate a potential defective
component. (See Note)
Note: Refer to vehicle OEM repair manual or contact the OEM for more information on the J1939 data link harness.
V
COM
A
Pin #Description