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Test Description

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The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  This step determines if the air temperature door position is within the specified range of the commanded value.
  2. 4:  Tests for the proper operation of the circuit in the low voltage range.
  3. 5:  Tests for the proper operation of the circuit in the high voltage range. If the jumper fuse opens when you perform this test, then the signal circuit contains a short to ground.
  4. 6:  Tests for a short to voltage in the 5-volt reference circuit.
DTC B0229

Step Action Values Yes No
Schematic Reference:  HVAC Schematics  
1 Did you perform the HVAC Diagnostic System Check? - Go to Step 2  Go to Diagnostic System Check - HVAC Systems - Automatic 
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, observe the recirculation door max. position parameter and the recirculation door min. position parameter in the Primary ECC Data List.
  4. Subtract the recirculation door min. position from the recirculation max. position.
Does the result of the calculation indicate that the actual travel of the recirculation actuator is within the specified range?		 64-216 counts Go to Step 3  Go to Step 8 
3
  1. Install the scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, command the recirculation actuator from to REC (ON) to OSA (OFF).
  4. With the scan tool, observe the recirculation actuator actual position.
Does the scan tool indicate that the recirculationactuator actual parameter changes within the specified range when it is commanded from OSA to REC?		 5-250 counts Go to Diagnostic Aids Go to Step 4 
4  Test the recirculation actuator ground circuit for an open. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 5 
5  Test the 5-volt reference circuit of the recirculation actuator for a short to ground or short to voltage. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 6 
6  Test the recirculation valve position sensor signal circuit for an open, short to ground or short to voltage. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 7 
7
IMPORTANT: The recirculation actuator connector and the HVAC control module connector must be connected to correctly perform this test.
  1. Turn on the ignition, with the engine off.
  2. With the scan tool, observe the recirculation actuator actual parameter in the Primary ECC Data List.
  3. Connect a 3-amp fused jumper wire between the recirculation door motor control circuit of the recirculation actuator and the 5 volt reference circuit of the recirculation actuator (drives the door to REC).
  4. Remove and reconnect the jumper wire between the recirculation door control circuit of the recirculation actuator to the ground circuit of the recirculation actuator (drives the door to OSA).
Does the drive shaft of the recirculation actuator rotate and do the counts change?		 - Go to Step 10  Go to Step 9 
8 Inspect the recirculation door and the recirculation actuator for the following.
  • Incorrectly installed recirculationactuator.
  • Broken or binding linkages or recirculation door.
  • Obstruction that prevents the recirculation actuator from operating within it's full range of motion.

Did you find and correct the condition?		 - Go to Step 13  Go to Diagnostic Aids
9 Inspect for poor connections at the harness connector of the recirculation actuator. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 11 
10 Inspect for poor connections at the harness connector of the HVAC control module. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 12 
11
IMPORTANT: Perform the recalibration procedure for the recirculation actuator.
Replace the recirculation actuator. Refer to RECIRCULATION ACTUATOR .Did you complete the replacement?		 - Go to Step 13  -
12
IMPORTANT: Perform the recalibration procedure for the HVAC control module.
Replace the HVAC control module. Refer to HVAC Control Module Replacement .Did you complete the replacement?		 - Go to Step 13  -
13
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 - Go to Step 2  System OK
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