DTC U0424-81: HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received [02/2019 - ]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK DTC OUTPUT (AIR CONDITIONER)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
- Check if DTCs related to the air conditioning system (A/C) are output.
Body Electrical > Air Conditioner > Trouble Codes
Result
Result Proceed to DTCs related to A/C are not output. A DTCs related to A/C are output. B - Turn the ignition switch off.
Result:
A
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to REMOVAL [11/2018 - ]
Result:
B
GO TO DTC CHART (AIR CONDITIONING SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [02/2019 - 06/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2020 - 08/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2020 - ]