Turbocharger Boost Pressure (TCBP) Sensor
The TCBP sensor is located in the intake air tube between the CAC and the throttle body. The TCBP sensor measures the throttle inlet pressure. The PCM uses the information from the TCBP sensor to refine the estimate of the airflow rate through the throttle and to determine the desired boost pressure. The TCBP sensor for a speed density system is integrated with the CACT sensor.