Lost Communication With All Terrain Control Module

Where it lives

For U0138, the part to look at first is the module named here.

Check these first

• A wiring or connector fault between the network and the All Terrain Control Module
• A failed All Terrain Control Module
• A power supply fault at the module
• A software fault in the module
• Corrosion or water in the module connectors

What to do next

1. Scan all modules for communication codes
2. Inspect the wiring and connector at the All Terrain Control Module
3. Check the module power supply and ground
4. Update the module software if the bus and feeds test good
5. Replace the All Terrain Control Module if the fault returns
6. Clear the code and retest

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