Checking Air Conditioning (A/C) System, Performance Test

Checking Air Conditioning (A/C) System, Performance Test







Hint: When a fault has been detected it is necessary to check that its symptom no longer exists. Check as follows:

- Ignition off.
- Connect connectors, reinstall components etc.
- Start the engine and allow to run 1500 - 1600 rpm.
- Turn the passenger compartment temperature selector to maximum cooling.
- Set the Air Conditioning (A/C) switch so that the A/C function is activated.
- Place air distribution selector to "VENT"
- Set the recirculation button to recirculation.
- Set blower fan switch to 70% of maximum speed.
- Close hood.
- Close doors and windows.
- Position a thermometer by one of the central dashboard vents.
- Allow the system to stabilize itself for at least 8 minutes.







- Run the engine at 1500 - 1600 rpm.
Check temperature of expelled air at central dashboard vents.
Check that the read off temperature is within the values specified below.

A is outside temperature, measured in front of the car, and
B is the temperature of expelled air in the central dashboard vents:

- If A is 20 °C (68°F), B should be 5 - 8 °C.
- If A is 30 °C, B should be 5 - 8 °C.
- If A is 40 °C, B should be 8 - 12 °C.