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Air Recirculation Malfunction

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Air Recirculation Malfunction

Step Action Values Yes No
Schematic Reference: HVAC Schematics 
Connector End View Reference:  HVAC Connector End Views  
DEFINITION: Air recirculation is inoperative or is always ON.
1 Did you perform the HVAC Diagnostic System Check? - Go to Step 2  Go to Diagnostic System Check - HVAC Systems - Automatic 
2
  1. Turn ON the ignition, with the engine OFF.
  2. With a scan tool observe the Recirculate Mode Parameter.
  3. Place the recirculation switch in the recirculate position.
Does the scan tool indicate that the recirculation switch changes state?		 - Go to Step 3  Go to Step 11 
3
  1. Turn OFF the ignition.
  2. Disconnect the recirculation actuator.
  3. Turn On the ignition, with the engine OFF.
  4. Probe the ignition 3 voltage circuit of the recirculation actuator with a test lamp that is connected to a good ground.
Does the test lamp illuminate?		 - Go to Step 4  Go to Step 8 
4 Test the low reference circuit of the recirculation actuator for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 5 
5
  1. Measure the voltage from the door control circuit of the recirculation actuator to a good ground.
  2. Place the recirculation switch in the outside air position.
Does the voltage measure near the specified value?		 0 volts outside air Go to Step 6  Go to Step 7 
6
  1. Measure the voltage from the door control circuit of the recirculation actuator to a good ground.
  2. Place the recirculation switch in the recirc position.
Does the voltage measure near the specified value?		 10-12 volts recirc Go to Step 9  Go to Step 7 
7 Test the recirculation door control circuit of the recirculation actuator for an open, a high resistance, a short to ground, or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 10 
8 Repair the ignition 3 voltage circuit of the recirculation actuator. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?		 - Go to Step 14  -
9 Inspect the recirculation door and the recirculation actuator for the following conditions:
  • A misaligned recirculation actuator.
  • Broken or binding linkages
  • A broken or binding recirculation door
  • An obstruction that prevents the recirculation door from operating within its full range of motion
  • Missing seals to the recirculation door
  • Misaligned seals to the recirculation door

Did you find and correct the condition?		 - Go to Step 14  Go to Step 10 
10 Inspect for poor connections at the harness connector of the recirculation actuator. 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 14  Go to Step 12 
11 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 14  Go to Step 13 
12 Replace the recirculation actuator. Refer to Recirculation Actuator Replacement .
Did you complete the replacement?		 - Go to Step 14  -
13 Replace the HVAC control module. Refer to HVAC Module Assembly Replacement .
Did you complete the replacement?		 - Go to Step 14  -
14 Operate the system in order to verify the repair.
Did you correct the condition?		 - System OK Go to Step 3 
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