Compressor Current Input

Compressor Current > 20 Fault High

Compressor Current < 5 Fault Low

Compressor Pressure Input

Compressor Pressure < 150 Fault Low

Heater Temperature Input

Heater Temp > 85 Fault High

Heater Current > 15 Fault High

Relay Voltage Input

Relay Voltage < 10 Fault Low

Refrigerant Temperature Input

Refrigerant Temp < 2 Fault Low

Refrigerant Pressure Input

Refrigerant Pressure < 25 Fault Low

Fault Code Output

Calibrated Time Passed? Counter

Clear DTC

Code Legend: 0 - No Fault 1 - P060A Compressor Fault 2 - P0AA6 HV Heater Fault 3 - P0645 HVAC Clutch Relay Control Circuit Fault 4 - P0536 Refrigerant Freezing Fault 5 - P0537 Refrigerant Low Fault

Compressor Current Input

Fault if Current > 20 or < 5

Heater Temperature Input

Fault if Temp > 85 or Current > 15

Relay Voltage Input

Fault if Voltage < 10

Refrigerant Temp Input

Fault if Temp < 2

Fault Code Output

Clear DTC