Pinpoint Test DN: Pressure And Temperature Sensors: Introduction

This pinpoint test is intended to diagnose the following:

• intake air temperature 2 (IAT2) sensor (12A697)
• manifold absolute pressure (MAP)/charge air cooler temperature (CACT) sensor (9F479)
• manifold absolute pressure (MAP)/intake air temperature 2 (IAT2) sensor (9F479)
• turbocharger boost pressure (TCBP)/charge air cooler temperature (CACT) sensor (9F479)
• harness circuits: IAT2, CACT, SIGRTN and VREF
• PCM (12A650)

Voltage values calculated for VREF equals 5 volts. These values can vary by 15% due to sensor and VREF variations.

Fig 1: Pressure And Temperature Sensors Voltage Graph

Courtesy of FORD MOTOR CO.

Fig 2: Intake Air Temperature 2 (IAT2) Sensor Connector

Courtesy of FORD MOTOR CO.

Fig 3: Manifold Absolute Pressure/Charge Air Cooler Temperature (MAP/CACT) Sensor Connector

Courtesy of FORD MOTOR CO.

Fig 4: Manifold Absolute Pressure/Intake Air Temperature 2 (MAP/IAT2) Sensor Connector

Courtesy of FORD MOTOR CO.

Fig 5: Turbocharger Boost Pressure/Charge Air Cooler Temperature (TCBP/CACT) Sensor Connector

Courtesy of FORD MOTOR CO.

Powertrain Control Module (PCM) Connector 

For PCM connector views or reference values, refer to REFERENCE VALUES .