DTC U0424-81: HVAC Control Module to Hybrid Powertrain Control Module Invalid Serial Data Received [10/2018 - ]: Procedure
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- 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.
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 power switch off.
Result:
A
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]
Result:
B
GO TO DTC CHART (AIR CONDITIONING SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2018 - 10/2019] Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 10/2020] Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2020 - 07/2022] Refer to DIAGNOSTIC TROUBLE CODE CHART [07/2022 - ]