80-JB566-1 Rev. G
11-1
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
11
Troubleshooting Best Practices
Troubleshooting Guidelines
Keep Known Good MCP50 Component Spares in Shop
Spare parts should include:
•
Vehicle Telematics Module (VTM50)
•
Antenna
•
Display Interface Unit (DIU50)
•
Power/IO cable
Use a Test Cart to Perform Bad Part Verification/Double Checking
If an Omnitracs MCP50 part is diagnosed bad on a truck, insert the failed part on the test cart.
•
If it continues to fail, part should be RMAd.
•
If the suspect part does not fail on the test cart, further troubleshooting of the MCP50 will
be necessary.
Perform a Visual Inspection of the Installed MCP50
•
Check for damaged cables, improper electrical connections, loose connections, and the
integrity of the installation, particularly the antenna.
•
Bad mounts can contribute to system problems.
•
Loose connections or parts not installed properly can allow excessive vibration which can
affect system performance.
Reseat All Cables
•
Always inspect and reseat cable connectors prior to replacing any components.
•
Inspect for corrosion and bent, broken, pushed, missing pins, and/or sockets.
Verify VTM50 LED Indicator Is in a Normal State
•
When booting up, the Red LED should blink slowly at first then more quickly.
•
Once boot up is completed, the Red LED should be off.
•
During normal operations, the Red LED should be off.
•
See section
Chapter 22: VTM LED Indicator
for more information.
