Ford Galaxy / Ford S-MAX. Manual — part 476

All vehicles

2. Tighten the shear bolt until the head is sheared

off.

3.

NOTE: This step is only necessary when
installing a new component.

Upload the PCM configuration information into the
PCM, using the Programmable Modules Installation
routine.

General Equipment:

Ford diagnostic equipment

Electronic Engine Controls - 2.0L
Duratorq-TDCi (85kW/115PS) - DW/2.0L
Duratorq-TDCi (100kW/136PS) -
DW/2.0L Duratorq-TDCi (103kW/140PS)
- DW - Electronic Engine Controls

S-MAX/Galaxy 2006.5 (02/2006-)

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Description and Operation

General overview

Description

Water-in-fuel sensor

Fuel temperature sensor

Manifold absolute pressure (MAP) sensor

Intake air temperature (IAT) sensor

Item

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2

3

4

Part Number

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Mass air flow (MAF) sensor

Powertrain control module (PCM)

Camshaft position (CMP) sensor

Crankshaft position (CKP) sensor

Engine coolant temperature (ECT) sensor

Fuel pressure regulator

Fuel metering valve

Engine oil pressure (EOP) sensor

Fuel rail pressure (FRP) sensor

Components

Water-in-fuel sensor

The water-in-fuel sensor is located in the fuel filter and sends a signal to the PCM if water
has accumulated in the fuel filter.

Fuel temperature sensor

The fuel temperature sensor is designed as a resistor with a negative temperature
coefficient (NTC).

The fuel temperature sensor monitors the temperature of the fuel returning to the fuel tank
from the fuel pump and the fuel injectors and sends a signal to the PCM.

The signal is required by the PCM for making fine adjustments to the fuel injection timing
and the fuel injection quantity.

MAP sensor

5

6

7

8

9

10

11

12

13

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The MAP sensor measures the charging pressure in the intake air shutoff throttle and sends
the PCM an analog voltage signal.

IAT sensor

The IAT sensor is a temperature dependent resistor which has a negative temperature
coefficient, therefore its temperature changes inversely with respect to ambient
temperature. The IAT sensor is supplied with a reference voltage by the PCM. When the
intake air changes temperature, the resistance of the IAT sensor changes therefore
changing the output voltage. The output voltage is assigned to a corresponding intake air
temperature by the PCM.

The signal from the IAT sensor is used as a correction variable for calculating the fuel
injection quantity.

MAF sensor

The MAF sensor measures the mass of air entering the intake system. The measurement is
based on the constant temperature hot wire principle. Suspended in a bypass duct are a hot
wire probe and an air temperature probe. The PCM makes sure that the hot wire probe is
always 200ºC hotter than the air temperature probe. The hot wire probe is cooled by the air
flowing through the intake system and the PCM varies the heating current to maintain the
200ºC temperature difference. The change in heating current is measured as a voltage drop
across a precision resistor and is assigned to a corresponding mass air flow calculation by
the PCM.

PCM