Category Archives for Sensors

Siemens-Common Rail System – Fuel pressure sensor

The illustration shows the fuel pressure sensor on the fuel rail of the of the 2.0L Duratorq-TDCi (DW) diesel engine. 1 Fuel pressure sensor NOTE: The fuel pressure sensor must on no account be removed from the fuel rail during … Continue reading

28. August 2018 by sam
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Siemens-Common Rail System – Vacuum-operated intake manifold flap position sensor

Figure depicts version of 1.8L Duratorq-TDCi (Kent) diesel in S-MAX/Galaxy 2006.5 (02/2006-) 1 Intake manifold flap vacuum unit 2 Intake manifold flap 3 Intake manifold flap position sensor NOTE: The intake manifold flap position sensor is only installed for certain … Continue reading

27. August 2018 by sam
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Siemens-Common Rail System – Vehicle speed signal

1 Wheel speed sensors 2 ABS module 3 PCM There are two methods available for detecting the vehicle speed: • Use of a VSS on vehicles with no ABS, • Via the wheel speed sensors for vehicles with ABS. The … Continue reading

27. August 2018 by sam
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Siemens-Common Rail System – Combined IAT sensor and MAF sensor

1 MAF sensor 2 Mark showing installation direction Depending on the version, two different MAF sensors are used: • analog MAF sensor – transmits an analog voltage signal to the PCM, where an analog/digital converter converts the signal for further … Continue reading

27. August 2018 by sam
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Siemens-Common Rail System – CHT sensor (1.8L Duratorq-TDCi (Kent) diesel only)

NOTE: A CHT sensor that has already been removed may no longer be used. The CHT sensor is screwed into the cylinder head and measures the material temperature. It replaces the familiar ECT sensor. By measuring the material temperature, engine … Continue reading

27. August 2018 by sam
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Siemens-Common Rail System – ECT sensor

Function The ECT sensor is located in the small coolant circuit of the engine and measures the coolant temperature. The voltage value supplied by the ECT sensor is assigned to a corresponding temperature value by the PCM. The ECT is … Continue reading

27. August 2018 by sam
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Siemens-Common Rail System – Turbocharger position sensor

1 Turbocharger position sensor 2 Turbocharger vacuum unit 3 Variable geometry turbocharger On some versions with variable geometry turbochargers, a turbocharger position sensor is located at the end of the vacuum unit. This position sensor further optimizes the boost pressure … Continue reading

27. August 2018 by sam
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Siemens-Common Rail System – BARO sensor

Function The BARO sensor is located in the PCM and measures the ambient air pressure. The further functioning is similar to that for the Bosch common rail system. Note: some versions (with fixed-geometry turbocharger) are not equipped with a MAP … Continue reading

27. August 2018 by sam
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Siemens-Common Rail System – IAT sensor

Note: not all versions are equipped with an IAT sensor. For these versions the intake air temperature (downstream of the turbocharger) is calculated by the IAT sensor integrated in the MAF sensor. Function The IAT sensor is designed as an … Continue reading

27. August 2018 by sam
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Siemens-Common Rail System – MAP sensor

1 MAP sensor 2 IAT sensor NOTE: Not all versions are equipped with a MAP sensor. In these versions, the boost pressure is calculated from the engine speed, intake air mass and BARO parameters. These versions are equipped with a … Continue reading

27. August 2018 by sam
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