DTC U0424-537: Invalid Data Received from HVAC Control Module: Procedure
- CHECK DTC OUTPUT (AIR CONDITIONER)
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
- Check if DTCs related to the air conditioning system (A/C) are output.
Result
Result Proceed to DTCs related to A/C are not output. A DTCs related to A/C are output. B
B → See step 3
A → See step 2
- REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to COMPONENTS
- GO TO DTC CHART (AIR CONDITIONING SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART