Schematic Reference: HVAC Schematics

DEFINITION: Air does not flow correctly from the air distribution outlets.

Did you perform the HVAC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - HVAC Systems - Manual

1. Turn ON the ignition, with the engine OFF.
2. Place the blower motor switch in the OFF position.

Is the blower motor OFF?

Go to Step 3

Go to Blower Motor Always On

Place the blower motor switch in each speed position.

Does the blower motor operate in any of the speed positions?

Go to Step 4

Go to Blower Motor Inoperative

Does the blower motor operate in each of the speed positions?

Go to Step 5

Go to Blower Motor Malfunction

1. Start the engine.
2. Place the blower motor switch in the maximum speed position?
3. Place the mode switch in the MAX position.
4. Observe the recirculation door.
5. Place the mode switch in the floor position.

Does the recirculation door move from the recirculation position to the outside air position?

Go to Step 6

Go to Vacuum Control System Diagnostic

Place the mode switch in each mode position.

Is the airflow sufficient from the correct outlets in each mode?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Vacuum Control System Diagnostic