2005 CITROEN C6 ECU

Downloaded from www.Manualslib.com manuals search engine 146
AXLES
SUSPENSION
STEERING
Composition of the Built-in Hydro-electronic Interface:
- An electric motor.
- A pump with 5 pistons.
- 4electrovalves.
- 2non-return valves.
- A pressure limiter.
- An anti-pulse accumulator.
- A filter.
- The suspension ECU.
Features of variable damping suspension.
Variable damping suspension ECU (CSS).
The ECU (CSS)is located in the engine compartment, in the ECU tray.
The ECU (CSS)manages the different damping laws, as a function of the information delivered
by the following components:
- The 4wheel travel sensors.
- The 2suspension pressure sensors.
- The speed of the vehicle.
- The speed of rotation of the steering wheel.
The suspension ECU (CSS)pilots the following components:
- The 4variable damping suspension actuators.
- The Built-in Hydro-electronic Interface (BHI).
B3BP1A1C
ACTIVE SUSPENSION WITH VARIABLE DAMPING
Built-in Hydro-electronic Interface (BHI)
Angl-C6-page121-169-2005 4/02/05 17:31 Page 146

Downloaded from www.Manualslib.com manuals search engine 147
AXLES
SUSPENSION
STEERING
(9)Front RH wheel travel sensor
The wheel travel sensor defines the angular position of the suspension lower arm.
Identification of the sensors:
- Front RH wheel travel sensor: Yellow.
- Front LH wheel travel sensor: Red.
- Rear RH wheel travel sensor: Green.
- Rear LH wheel travel sensor: Blue.
IMPERATIVE: Before operating on a wheel travel sensor, uncouple its rod so as not to
go past the maximum angular travel (see corresponding operation).
The suspension pressure sensors (7)informs the suspension ECU (CSS)of the pressure in
the hydraulic high pressure pipes of the front suspension.
The sensor (13)informs the suspension ECU (CSS)of the pressure in the hydraulic high
pressure pipes of the rear suspension.
B3BP19ZCB3BP19YC
ACTIVE SUSPENSION WITH VARIABLE DAMPING
Wheel travel sensor
Suspension pressure sensor
Angl-C6-page121-169-2005 4/02/05 17:31 Page 147

Downloaded from www.Manualslib.com manuals search engine 172
BRAKES
B3FP7GFC
BRAKING SYSTEM: GENERAL SPECIFICATIONSComponents Supplier Reference Observations
Hydraulic valve blockLocated on the front LH chassis member:
TRWESP 4regulation channels
ECUVSC 440
25-way connector
Integral to the hydraulic valve block
2-way blackconnector
Front wheel sensor The sensors, of inductive type, are fitted on the pivot
SIEMENSAir gap non-adjustable: 0.25 to 1.65 mm
VDO 2-way blackconnector
Rear wheel sensor The sensors, of inductive type, are fitted on the pivot
Air gap non-adjustable: 0.23 to 1.35 mm
Front pivot bearingThe hub has a bearing with integral magnetic wheel
NSK(48 pairs of poles)
Rear hub bearingThe rear hub-bearing has a radial ABS target
(48 pairsof poles)
ABS/ESP hydraulic valve block
Angl-C6-PAGE170-194-2005 4/02/05 17:35 Page 172

Downloaded from www.Manualslib.com manuals search engine SAFETY REQUIREMENTS: ACTIVE SUSPENSION WITH VARIABLE DAMPING
All operations on the hydraulic suspension circuit must be performed in conformity with the following requirements and regulations:
Authorities competent in matters of health:
- Accident prevention.
- Environmental protection.
WARNING: Operations should be carried out by specialised personnel who have had training in the safety requirements and precautions to
be taken.
Safety requirements.
ESSENTIAL: In view of the special features of the hydraulic suspension system, observe the requirements below, before undertaking any
repair.
IMPERATIVE: Depending on the operation to be carried out, respect the requirements for supporting and securing the vehicle.
Wheels hanging Wheels not hanging
Vehicle on the ground Vehicle on 4-column lift
2-column lift or secure the Depressurisation of the circuit Checking and adjusting of Other operations
vehicle on 4 axle stands(see corresponding operation)heights (switch on ignition) (depressurisation of the
hydraulic circuit)
HYDRAULICS
195
Angl-C6-page195-202-2005 4/02/05 17:36 Page 195