Ford Galaxy / Ford S-MAX. Manual — part 963

Installation

5.

6.

7.

8.

NOTE: Note the position of the component
before removal.
NOTE: Make sure that this component is
installed to the noted removal position.

2. Torque: 35 Nm
3. Torque: 35 Nm

1. To install, reverse the removal procedure.

Supplemental Restraint System - Air Bag
and Safety Belt Pretensioner
Supplemental Restraint System (SRS)

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

Print

Description and Operation

System overview

Description

Clockspring

Driver air bag module

Passenger air bag module

Passenger air bag deactivation (PAD) switch

Restraints control module (RCM)

Driver lower air bag module

Item

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2

3

4

5

6

Part Number

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Description

Crash sensor

Side air bag module

Side air curtain module

Side impact sensor

System Structure

The following components form part of the supplemental restraint system (SRS):

RCM
Single-stage driver and passenger air bag modules
Driver lower air bag module
Side air bag modules
Side air curtain modules
Crash sensor
Side impact sensors
Clockspring
Front safety belt retractors and pretensioners
Rear safety belt retractors
Air bag warning indicator
Passenger air bag deactivation (PAD) switch (optional)

RCM

The RCM is located under the floor console, near to the gearshift lever. Installation direction

Item

1

2

3

4

Part Number

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on the module are to make sure it is aligned correctly.

Electronic sensors are incorporated into the RCM; these measure the vehicle
acceleration/deceleration in the event of a collision. The calculated value is evaluated by
the RCM to determine the severity of the impact.

The RCM compares the values it receives from the crash sensor, side impact sensors and
the internal electronic sensors. If the deceleration, due to a frontal or side impact, exceeds
the stored value the RCM will trigger the air bag modules and the safety belt pretensioners
as required.

If the vehicle battery is destroyed in the collision, a voltage hold circuit in the RCM will still
enable the air bag modules to be triggered up to 150 ms after the start of the impact.

If a system fault is detected by the RCM, the air bag warning lamp is illuminated. The fault
can be located by carrying out a diagnostics check using the Worldwide Diagnostic System
(WDS).

The RCM can be used again after a collision, provided the RCM is not physically damaged
and it passes a self-test.

Crash Sensor

The crash sensor is installed at the front of the vehicle, behind the radiator grille. Data from
the crash sensor is evaluated by the RCM to assess the severity of a frontal impact. The
crash sensor transmits digitally encoded acceleration information to the RCM.

Power is supplied to the crash sensor by the RCM. If a crash sensor fails, the RCM stores a
Diagnostic Trouble Code (DTC).

Continued use of the crash sensor is permissible provided it has not been physically
damaged and it passes a self-test.

The external shape of the crash sensor prevents it from being installed incorrectly.

Side Impact Sensors

The side impact sensors are located at the bottom of the B-pillars and transmit digitally
encoded acceleration information to the RCM.