Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2016CORVETTE Z06, 2D COUPE, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHEATING, VENTILATION AND AIR CONDITIONINGDIAGNOSTIC INFORMATION AND PROCEDURESA/C DIAGNOSTICS CHART
2016 Chevrolet Corvette Z06, 2D Coupe, Standard Trans
A/C Diagnostics Chart
2016 Chevrolet Corvette Z06, 2D Coupe, Standard TransSECTION A/C Diagnostics Chart
| A/C System Concern | Potential Causes | |
|---|---|---|
| Compressor Inoperative | Electrical Wiring Issue | |
| No or Low Refrigerant Charge | ||
| Compressor Internal Malfunction | ||
| Compressor Clutch Malfunction | ||
| A/C Pressure Sensor Malfunction | ||
| Evaporator Air Temperature (EAT) Malfunction | ||
| HVAC Controls Malfunction | ||
| Low Side Gauge Reading | High Side Gauge Reading | Potential Causes |
| Same as High Side | Same as Low Side | No or Low Refrigerant Charge |
| Compressor Malfunction | ||
| A/C Pressure Sensor Malfunction | ||
| EAT Malfunction | ||
| HVAC Controls Malfunction | ||
| Normal | Normal | Temperature Actuator Malfunction |
| Temperature Door Malfunction | ||
| Low | Low | Low Refrigerant Charge |
| Restriction between the Compressor Outlet and Low Side Port | ||
| Low/Normal | Evaporator Freezing/EAT Malfunction | |
| High | Compressor Stuck at Maximum Displacement/EAT Malfunction | |
| Normal/High | Normal/High | PAG or POE Oil Overcharge |
| High | Low | Restriction between the Low Side Port and Compressor Inlet |
| Expansion Device Stuck Open | ||
| Compressor has Low Displacement or Internal Malfunction | ||
| High | Malfunctioning Cooling Fans | |
| Refrigerant Overcharge | ||
| Restricted Condenser Air Flow | ||
| Air in A/C System | ||
|
NOTE:
Restrictions can occur in any part of an A/C system and may result in various gauge pressure values, depending on the system design and service port locations. The use of a non-contact, infrared thermometer can help diagnose a restricted A/C system with the ability to quickly observe significant, unexpected temperature changes in components and plumbing due to debris, contamination, pinched/damaged hoses, etc.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.