Invalid Data Received From Interior Lighting Control Module A

Where it lives

For U054B, the part to look at first is the module named here.

Check these first

• A shorted interior lamp circuit dragging down the control module A supply
• An open or short in the interior lighting control module A wiring to the module that receives its data
• A lost power or ground feed to the interior lighting control module A
• Stale calibration or an outdated software load in the interior lighting control module A

What to do next

1. Scan all modules and record the stored and pending network codes
2. Inspect the interior lighting control module A connector pins for corrosion, water, and looseness
3. Check battery voltage and charging output
4. Repair or replace the interior lighting control module A if the circuit, power, and bus tests pass
5. Clear the code and retest to confirm the interior lighting control module A fault is gone

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