Ford Galaxy / Ford S-MAX. Manual — part 472

The CKP sensor uses the Hall effect principle.

CHT sensor

The CHT sensor is screwed directly into the cylinder head and measures the temperature of
the material of the cylinder head, rather than the coolant temperature. This is a more
accurate measurement of the engine temperature and the information is used by the
instrument cluster for the temperature gauge indication. It is also used by the PCM to
calculate fuel injection timing and period of injection which will vary dependant on the
engine temperature.

Fuel metering valve

The fuel metering valve adjusts the quantity of fuel to the high-pressure pump elements as
a function of engine operating conditions. This improves engine efficiency.

The fuel metering valve is controlled by the PCM using pulse-width modulation.

The fuel metering valve is closed when de-energized.

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.

Brake pedal position (BPP) switch and brake light switch

The BPP switch is connected to the instrument cluster through the CAN bus.

The BPP switch is closed when de-energized and sends a ground signal to the PCM.

The brake light switch is connected with the PCM through a conventional electrical
connector.

The brake light switch is open when de-energized. When the brake light switch is closed, it
sends 12 volts to the PCM.

The signals of the BPP switch and the brake light switch are used if the APP sensor should
fail.

In this instance, the PCM compares the signals of the BPP switch and brake light switch.

APP sensor

The APP sensor is a double contactless inductive sensor.

For safety reasons, the APP sensor consists of two sensors.

If the APP sensor malfunctions when the vehicle is in operation, a diagnostic trouble code
(DTC) will be stored in the PCM.

If one of the sensors in the APP sensor should fail, the engine will operate at reduced
power.

If the vehicle is fitted with a driver information system, the fault message "REDUCED
ACCELERATION" will be displayed.

If both sensors of the APP switch fail, after a single operation of the BPP switch and the
brake light switch and then after a plausibility check, the engine is controlled up to a speed
of 1200 RPM. The vehicle can be accelerated to a maximum speed of 56 km/h (35 mph).

When the BPP switch and the brake light switch are actuated again, engine speed will drop
to idle speed. Once the BPP switch and the brake light switch are de-energized again,
engine speed is increased again.

If the vehicle is fitted with an information and message system, the fault message
"REDUCED TOP SPEED" will be displayed.

If the vehicle is not fitted with an information and message system, the malfunction
indicator lamp (MIL) will be illuminated to indicate a system fault.

Electronic Engine Controls - 1.8L
Duratorq-TDCi (74kW/100PS) -
Lynx/1.8L Duratorq-TDCi (92kW/125PS)
- Lynx - Camshaft Position (CMP) Sensor

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

Print

Removal and Installation

Removal

NOTE: Removal steps in this procedure may contain installation details.

Installation

1.

2. Torque: 10 Nm

1.

NOTE: Make sure that the sensor housing is
clean and free of foreign material.

To install, reverse the removal procedure.