Ford Galaxy / Ford S-MAX. Manual — part 589

Description

DPF gasket

DPF

Pressure differential sensor lines

Pressure differential sensor bracket

Pressure differential sensor

DPF temperature sensor

Exhaust hanger insulators

DPF filter system consists of the following components:

Diesel particulate filter (DPF)
Pressure differential sensor
Temperature sensor

DPF

The DPF reduces the pollution generated by diesel vehicles by filtering soot particles out of
the exhaust gases.

Pressure Differential Sensor

The pressure differential sensor monitors the pressure drop within the DPF.

Temperature Sensors

Item

1

2

3

4

5

6

7

Part Number

-

-

-

-

-

-

-

The exhaust temperature sensor monitors the catalyst temperature. The DPF temperature
sensor monitors the pre-DPF temperature. These signals are sent to the powertrain control
module (PCM).

Regeneration of the DPF

Soot particles can accumulate in the post DPF exhaust tailpipe. The accumulation of the
soot particles should not be considered a concern, as the DPF is not 100% efficient at
filtering the soot particles.

During the regeneration process, it is possible that white smoke may be emitted from the
exhaust tailpipe. This is an inherent by-product of the regeneration process and should not
be considered a concern.

The pressure differential sensor is connected to the DPF by the pressure differential sensor
lines to monitor the pre-pressure and post-pressure of the DPF. The pressure differential
sensor converts these measurements to a signal voltage, which is then sent to the PCM to
be used as part of the decision of whether to apply the regeneration process or not.

The PCM will choose the optimum time for the regeneration of the DPF. Under normal
operating conditions the regeneration process occurs when the PCM has calculated that the
DPF requires regeneration and that predetermined vehicle conditions are met (for example
coolant temperature, vehicle speed and engine load).

Manual regeneration of the DPF

If the DPF becomes blocked the pressure differential sensor will register a high pressure
diagnostic trouble code (DTC) with the PCM, the malfunction indicator lamp (MIL) will be
illuminated and the limp home mode activated.

A blocked DPF can be a result of:

Excessive soot particles production
Multiple failed regeneration events

Mechanical or electrical failure of a related system or sub-system (for example EGR valve
stuck open, charge air system leak, fuel injectors)

The manual regeneration of the DPF can be used to clear the soot particles from the DPF.
For additional information, refer to WDS.

Muffler

Description

Muffler

Exhaust hanger insulators

Item

1

2

Part Number

-

-

Exhaust System - 2.0L Duratorq-TDCi
(85kW/115PS) - DW/2.0L Duratorq-TDCi
(100kW/136PS) - DW/2.0L Duratorq-
TDCi (103kW/140PS) - DW, Emission
Requirements: Stage IV - Catalytic
Converter

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

Print

Removal and Installation

Materials

Removal

Vehicles with diesel particulate filter

All vehicles

Name

Specification

Grease KS-PS SA-M1C9107-A / YS5J-M1C9107-AA

1.

2. Refer to:

Air Cleaner

(303-12D Intake Air

Distribution and Filtering - 1.8L Duratorq-TDCi
(74kW/100PS) - Lynx/1.8L Duratorq-TDCi
(92kW/125PS) - Lynx, Removal and Installation).

3.

4. Raise and support the vehicle.

Refer to:

Lifting

(100-02 Jacking and Lifting,

Description and Operation).

5.

6.

CAUTION: Make sure that the exhaust

flexible pipe is not forcibly bent.

7.

NOTE: Note the orientation of the clamp to
aid installation.

8.

9.

NOTE: Make sure that the exhaust flexible
pipe is not twisted.

10.

11.