Air intake mode does not work after repair of rain sensor, FBCM, IC, PCM, or TCM. After performing any one of the following repairs, the air intake link at the blower unit may disengage and result in the HVAC systemnot switching between recirculation and fresh air modes. * Replacing rain sensor * Replacing front body control module (FBCM) * Replacing instrument cluster (IC) * Reprogramming any control unit (PCM, TCM, etc) - manual A/C only. This is caused by the air intake link in the blower unit not being sturdy enough for the actuator torque under fail safe fmode. Fail safe mode occurs when a communication error occurs between the A/C control unit and the humidity sensor. To c orrect this problem, the blower unit has been modified.
