DTC U0424-81: HVAC Control Module To Hybrid Powertrain Control Module Invalid Serial Data Received: Notes
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1. -
Outline of diagnosis:
A/C control module failure
Hybrid vehicle control ECU assembly receives communication malfunction from A/C control module
(1 trip detection logic)
Trouble symptom:
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CAUTION:
Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION
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- CHECK DTC
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Read the DTC of [Air Conditioner] using the Subaru Select Monitor. Ref. to AIR CONDITIONER (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .
Are any DTCs displayed?
Yes : Perform the diagnosis for the displayed DTCs. Ref. to AIR CONDITIONER (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .
No : Replace A/C control module. Ref. to AIR CONDITIONER (HEV)>CONTROL PANEL .