Procedure 3 - Ambient Temperature Above 38 °C (100 °F)
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
- 3.
Set the Air Conditioning (A/C) system temperature to the lowest possible temperature setting with the dual function disabled (if equipped). Manually set the blower on HI. If the vehicle has a fresh air/recirc button, set it to FRESH. If the vehicle has an A/C switch or compressor on switch, set it to A/C ON.
- 4.
Open all vehicle windows and leave the hood open for the test. Open the rear hatch and/or rear doors (if equipped).
- 5.
Confirm the compressor is operating and the engine cooling fan(s) are operating or engaged. Allow the vehicle to idle until the suction (low-side) and discharge (high-side) pressures are stable or fluctuate in a range that repeats.
- 8.
Determine if the discharge pressure falls within the normal operating limits using the Normal Refrigerant Discharge Pressures chart.
- 10.
Determine if the suction pressure falls between normal operating limits using the Normal Refrigerant Suction Pressures chart.