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DTC B0269: RECIRCULATION Door Calibration Error

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The numbers below refer to the step numbers of the diagnostic procedure.
  1. 3  - A total travel range greater than 15 counts indicates a mechanical malfunction with the door or linkage, causing an over travel or under travel condition. A total travel range less than 15 counts indicates an electrical malfunction, binding door, or binding linkage.
  2. 7  - This step uses the fused jumper wire to drive the actuator to its maximum and minimum positions. Use the Scan Tool to determine the total travel range of the Actuator (maximum position-minimum position).
  1. Perform diagnostic system check. See DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing system check, go to next step.
  2. Use scan tool to observe MIN AIR INLET DR. POS and MAX. AIR INLET DR. POS parameters in INSTRUMENT PANEL MODULE data list. Subtract value between MIN AIR INLET DR. POS and MAX. AIR INLET DR. POS parameters. If result of calculation indicates total travel of recirculation door is 149-220 COUNTS (2.9-4.3 volts), inspect wiring and connectors for intermittent loose wires and/or poor connections. Also check recirculation door travel for obstructions or overtravel condition. If result of calculation indicates total travel of recirculation door is not between 149-220 counts (2.9-4.3 volts), but is more than 15 counts (0.3 volts), go to step  9. If result is 15 counts (0.3 volts) or less, go to next step.
  3. Turn ignition off. Disconnect recirculation actuator. Turn ignition on. Connect test light between ground and terminal No. 5 (Brown wire) of recirculation actuator harness connector. See Figure. If test light illuminates, go to next step. If test light does not illuminate, repair open in Brown wire between recirculation actuator and ignition fuse No. 3 (10-amp) of rear fuse box (located under rear seat on driver's side). Go to step  10.
  4. Measure voltage between ground and terminal No. 10 (Gray wire) of recirculation actuator harness connector. If voltage is close to 5 volts, go to next step. If voltage is not close to 5 volts, go to step  8.
  5. Disconnect recirculation actuator harness connector. Turn ignition off and on. Measure voltage between ground and terminal No. 6 (Dark Green wire) of recirculation actuator harness connector. See Figure. If voltage measures between 2.3-2.7 volts, go to step  7. If voltage does not measure between 2.3-2.7 volts, go to next step.
  6. Check for open, short to ground or short to voltage between ground and terminal No. 6 (Dark Green wire) of recirculation control actuator harness connector. See Figure. Repair as needed and go to step  10. If circuit is okay, check for loose wires or poor connections at IPM. If wiring and connectors are okay, replace IPM. See INSTRUMENT PANEL MODULE (IPM)  under REMOVAL & INSTALLATION. Go to step  10.
  7. Turn ignition off. Connect recirculation actuator and IPM harness connectors. Connect recirculation actuator. Turn ignition on. Using scan tool, observe AIR INLET DR ACTUAL parameter in INSTRUMENT PANEL MODULE HVAC DOOR POSITIONS data list. Connect 3-amp. fused jumper wire between terminals No. 6 (Dark Green wire) and No. 10 (Gray wire) of recirculation actuator harness connector. Recirculation actuator should move toward recirculation position. Remove jumper wire. Reconnect jumper wire between terminals No. 6 (Dark Green wire) and No. 7 (Yellow wire) of recirculation actuator harness connector. Recirculation actuator should move toward open air position. If scan tool indicates total travel is more than 15 counts, check for loose wires and poor connections at recirculation actuator. If wiring and connectors are okay, replace recirculation actuator. See RECIRCULATION ACTUATOR  under REMOVAL & INSTALLATION. If scan tool indicates total travel is less than 15 counts, go to step  9.
  8. Check for open in Gray wire between ground and terminal No. 10 of recirculation control actuator harness connector. See Figure. Repair as needed and go to  10. If circuit is okay, check for loose wires or poor connections at IPM. If wiring and connectors are okay, replace IPM. See INSTRUMENT PANEL MODULE (IPM)  under REMOVAL & INSTALLATION. Go to step  10.
  9. Check recirculation actuator for a misaligned recirculation actuator, broken or binding linkages, any obstruction that might prevent recirculation actuator from opening within it's full range of motion, missing or misaligned recirculation door seals or a broken recirculation door. Repair as needed and go to next step. If no problems were found, check for loose wires or poor connections at recirculation actuator. Repair as needed and go to next step. If wiring and connections are okay, replace recirculation actuator. See RECIRCULATION ACTUATOR  under REMOVAL & INSTALLATION. Go to next step.
  10. Use scan tool to clear DTCs. Operate vehicle and verify that DTCs do not reset. If DTCs reset, return to step  2. If DTCs do not reset, system is okay.
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