Schematic Reference: HVAC Schematics

Connector End View Reference: HVAC Connector End Views

DEFINITION: Air recirculation is inoperative or is always ON.

Did you perform the HVAC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - HVAC Systems - Automatic

1. Turn ON the ignition, with the engine OFF.
2. With a scan tool observe the Recirculate Switch Parameter.
3. Activate the recirculation switch.

Does the scan tool indicate that the Recirculate Switch Parameter changes state?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Inspect for poor connections at the harness connector of the HVAC control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 5

Go to Step 4

Replace the HVAC control module. Refer to HVAC Control Module Replacement .

Did you complete the replacement?

Go to Step 5

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2