DTC U0424-537: Invalid Data Received from HVAC Control Module: Procedure

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CHECK DTC OUTPUT (AIR CONDITIONING SYSTEM)
1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the following menu items: Body Electrical / Air Conditioner / Trouble Codes.
4. Check if DTCs are output.
  Result
  
  Air conditioning system DTCs are output.
YES → See step 2

NO → REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY
GO TO AIR CONDITIONING SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART