sensor CITROEN C6 2005 User Guide

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INJECTION
CHECKS: TURBO PRESSURE
Engine: DT17BTED4
Tools.
[1]Pressure gauge for checking the pressure: 7073-T.A
[2]Tool for checking the inlet air pressure/vacuum: (-).0171.G3
[3] LEXIAdiagnostic tool: 4171-T
[4] PROXIAdiagnostic tool: 4165-T
Checks.
IMPERATIVE: Respect the safety and cleanliness specific to high pressure diesel injection
engines.
Preliminary operations.
WARNING: Prior to any intervention, check the connections of the turbocharger pressure
regulation actuators.
NOTE:If an air flow fault is memorised by the diagnostic tool, refer to the chapter "Air flow from
the turbochargers".
Turbo pressure sensor.
Remove the engine cover.
Disconnect the connector "a".
Remove the turbo pressure sensor (1).
B1BP3CZC
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INJECTION
CHECKS: TURBO PRESSURE
Engine: DT17BTED4
Connect:
- The tool [2a]in place of the turbo pressure sensor (1).
- The turbo pressure sensor (1)on the tool [2b].
- Tool [1]on tool [2], at "b".
Connect the diagnostic tool [3]or [4]to the vehicle's diagnostic socket:
- Put the diagnostic tool [3]or [4]in parameter measures.
Start the engine.
Accelerate to 2500 rpm.
Compare the pressure values read on the diagnostic tool and on the pressure gauge [1].
NOTE:If there is a significant difference in pressure, replace the turbo pressure sensor.
Air/air exhanger.
Check the condition of the following components:
- Air inlet pipe.
- Airoutlet pipe.
- Air /air exchanger.
Air flow from the turbochargers.
NOTE: If an air flow fault is memorised by the diagnostic tool, check the air flow from the turbocharger
incriminated.
Connect the diagnostic tool [3]or [4]to the vehicle's diagnostic socket:
- Put the diagnostic tool [3]or [4]in parameter measures.
Start the engine.
Accelerate to 2500 rpm.
Compare the air flows (mg/stroke)from the two turbochargers.
B1BP3D0C
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CLUTCH
GEARBOX
TRANSMISSION
Engines: ES9A - DT17BTED4
1 Automatic gearbox heat exchanger 4,2 ± 0,42 Hydraulic valve block casing 1,5 ± 0,23 Filler plug 4 ± 0,4
Torque converter screw [(ES9 3 screw) (DT17 6 screw)]
4Pre-tightening2 ± 0,2
Slackening100°
Tightening6 ± 0,6
5 Sleeve stop 3,5 ± 0,36 Gearbox support 5,5 ± 0,57 Engine speed sensor (ES9J4) 0,8 ± 0,18 Fixing of gearbox on cylinder block 6 ± 0,69 Closing panel fixing 2 ± 0,2
B2CP42XD
AM6 GEARBOX: TIGHTENING TORQUES
B2CP42WD
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CLUTCH
GEARBOX
TRANSMISSION
Engines: ES9A - DT17BTED4
12 Oil induction cover 1 ± 0,111 Hydraulic valve block (in the order indicated) 1 ± 0,112 Oil temperature sensor tightening plate 1 ± 0,113 ECU screws 2,5 ± 0,214 Oil drain and overflow plug 1 ± 0,115 Oil level plug 4,8 ± 0,5
B2CP42ZD
AM6 GEARBOX: TIGHTENING TORQUES
B2CP42YD
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CLUTCH
GEARBOX
TRANSMISSION
AM6 GEARBOX CONTROLSThe gear selector is guided by the shape of the stepped gate and by a retaining spring which
pulls it to the left hand side.
The gear control has 5 positions:
- Position "P": parking (locking and immobilisation of the vehicle).
- Position "R": reverse gear.
- Position "N": neutral.
- Position "D": drive (for use of the 6 gearsin autoadaptive automatic operation).
- Position "M": manual (this position allows the driver to select his gears in one-touch mode by
pulling "M -"or pushing "M +"on the gear selector).
NOTE:Only positions "P"or "N"authorise starting of the engine.
In position "M", the selection is enabled by an electronic sensor located close to the gear
selector:
- The variation of flux necessary to affect the sensor cells is obtained by a magnet on the lever
opposite the cells, provoking the changes of status.
- The information on this is transmitted to the gearbox ECU.
B2CP430D
Engines: ES9A - DT17BTED4
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CLUTCH
GEARBOX
TRANSMISSION
PROCEDURE FOR INITIALISATION OF THE AUTOMATIC GEARBOX ECU
NOTE:For all these operations, follow the procedure in the diagnostic tool.
Replacement of the automatic gearbox without replacement of the ECU.
Carry out the following operations:
- Initialisation of the neutral position of the gear selection lever position sensor.
- Initialisation of the adaptation of the oil pressure regulators and electrovalves.
- Initialisation of the autoadaptatives.
- Resetting the oil usage counter to zero.
Replacement of the automatic gearbox ECU.
Carry out the following operations:
- Read the value of the gearbox oil usage counter from the old ECU.
- Write the value of the oil usage counter into the new ECU.
- Initialisation of the neutral position of the gear selection lever position sensor.
- Initialisation of the adaptation of the oil pressure regulators and electrovalves.
- Initialisation of the autoadaptatives.
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AXLES
SUSPENSION
STEERING
A:Front suspension
B:Rear suspension
NOTE:The rear stiffness regulator is equipped with two accumulators.
(1)Variable damping suspension actuator
(2)Front suspension accumulator
(3)LDS fluid reservoir
(4)Front suspension cylinder
(5)Built-in Hydro-electronic Interface (BHI)
(6)Front stiffness regulator
(7)Suspension pressure sensor
(8)Front stiffness regulator accumulator
(9)Wheel travel sensor
B3BP1ASDB3CP09AD
ACTIVE SUSPENSION WITH VARIABLE DAMPING
Location of components
Front axle
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AXLES
SUSPENSION
STEERING
(10)Rear suspension cylinder
(11)Rear suspension accumulator
(12)Variable damping suspension actuator
(13)Suspension pressure sensor
(14)Rear stiffness regulator accumulator
(15)Rear stiffness regulator
(16)Wheel travel sensor
Source of pressure.
Features.
Hydraulic fluid : LDS TOTAL H50126.
The LDS fluid orangein colour is 100% synthetic.
Capacity of the hydraulic circuit: 6.3 litres.
NOTE: LDS:Liquide Direction Suspension(steering/suspension fluid).
«a» LDSfluid reservoir filler (cap)
«b»Suction (BHI)(power steering pump)
«c»Return (stiffness regulators)
«d»Return (power steering pump)
«e»Return (filter)
«f»Suction (filter)
The level of the LDSfluid must be checked with the vehicle in the low position (refer to the
procedure «Depressurisation: suspension circuit»).
B3DP0BSDB4BP01SD
ACTIVE SUSPENSION WITH VARIABLE DAMPING
Rear axle
LDS fluid reservoir
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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)
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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
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