Did you perform the HVAC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check

Did the customer concern occur during A/C mode operation?

Go to Step 3

Go to Step 5

IMPORTANT: Outside air temperature must be above 16°C (60°F).

1. Start the engine.
2. Fully open all panel outlets.
3. Adjust temperature to COOL
4. Select MAX A/C mode
5. Set blower speed to maximum.
6. Ensure that the VENT mode indicator is not illuminated.

Are right and left center panel outlet temperatures similar?

System OK

Go to Step 4

Perform the refrigerant system performance test. Refer to System Performance Test .

Are low and high side pressures within specification?

Go to Step 6

Go to VDOT Air Conditioning (A/C) System Diagnosis

1. Ensure that the engine temperature is cool.
2. Check the coolant level in the radiator and the reservoir.

Is the coolant system full?

Go to Step 6

Go to Heating Insufficient

1. turn ON the ignition, with the engine OFF.
2. Use the heater and A/C control to adjust the temperature from COOL to WARM.

Do both driver and passenger air mix doors operate together through the full travel range?

System OK

Go to Step 7

Inspect the air mix actuator and air mix doors for binding or mechanical failure.

Did you find and correct the condition?

Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2