Control Module Communication Bus K Off

Where it lives

For U007D, the part to look at first is the module named here.

Check these first

• Loss of power or ground to a module on bus K
• An open in the bus K wiring feeding that module
• A corroded or backed out pin at the module connector on bus K
• An internal failure in the module that is off bus K

What to do next

1. Read stored codes on every module that shares bus K
2. Check power and ground at the module that is off bus K
3. Test the bus K wiring to that module for an open
4. Check the module connector pins on bus K for corrosion
5. Replace the module that stays off bus K and program it
6. Clear the code and retest

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