HVAC System Fault Detected

Scan for DTCs with Diagnostic Tool

Identify DTC Category

Check HV System Status

HV System OK?

Repair HV System Issues First

Inspect Wiring & Connections

Wiring OK?

Repair/Replace Damaged Wiring

Test Compressor Resistance & Operation

Compressor OK?

Replace Compressor

Compressor Path

Check HV Battery Voltage

Check HV Defective Connections

Voltage >200V?

Check HV Battery SOC & Health

Clear DTCs & Perform Final Test

DTCs Cleared? System Operational?

Repair Complete Document Work

Perform Advanced Diagnosis or Consult Tech Support