Problem: Cellular Signal Strength Fails Cellular Signal Strength Problems
16-2 80-JB566-1 Rev. G
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
1. Verify that the truck is at a location where there is known to be good cellular coverage.
2. Check to ensure there are no metal obstructions above the antenna.
3. If there are no obstructions, inspect the antenna and antenna cable to ensure there is
no damage.
4. Reseat both antenna connections at the VTM. Allow a few minutes to reacquire a
cellular signal.
5. If there is still a problem, test with known good antenna.
6. If it continues to have problems, test with known good VTM.
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