Diagnostic Aids

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A dead zone exists in a range 10 counts above or below the recirculation door max or recirculation door min positions. When the recirculation door actual data parameter is within the dead zone, the DTC will not set. If the recirculation door commanded data parameter differs from the recirculation door actual data parameter by 4 counts or more outside the dead zone, the DTC will set.
A damaged or broken recirculation door and or actuator can cause this DTC to set.

DTC B0268

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	Install the scan tool. Turn ON the ignition, with the engine OFF. With the scan tool, observe the recirculation actuator Commanded data parameter and the recirculation actuator Actual data parameter in the Primary ECC Data list. Does the scan tool indicate that the recirculation actuator Commanded data parameter is within the specified value of the recirculation actuator Actual data parameter?	0-3 counts	Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS	Go to Step 3
3	With the scan tool, command the recirculation actuator REC (ON) from to OSA (OFF). With the scan tool, observe the recirculation actuator actual position. Does the scan tool indicate that the recirculation actuator actual parameter changes within the specified range when it is commanded from REC to OSA?	5-250 counts	Go to Diagnostic Aids	Go to Step 4
4	Test the recirculation actuator ignition 3 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 an open. 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 door motor control 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 test. Turn on the ignition, with the engine off. With the scan tool, observe the recirculation actuator actual parameter in the Primary ECC Data List. Connect a 3-amp fused jumper wire between the recirculation door motor control circuit of the recirculation actuator and 5-volt reference circuit of the recirculation actuator this action drives the door to the recirc position. Remove and reconnect the recirculation door motor control circuit of the recirculation actuator and ground circuit of the recirculation actuator this action drives the door to the outside air position. Does the recirculation actuator drive shaft rotate and do the counts change?	-	Go to Step 10	Go to Step 8
8	Inspect the recirculation actuator and the recirculation actuator for the following: Incorrectly installed recirculation actuator. Broken or binding linkages or recirculation actuator. 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 Step 9
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	Use the scan tool in order to clear the DTCs. 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