2004 Citroen XSARA Exhaust

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INJECTION
CHECKS: EXHAUST GASES RECYCLING CIRCUIT
Engines: 8HX 8HW
Engines: 8HV 8HY
Tools.
[1]
Manual pressurevacuum pump: FACOM DA 16
IMPERATIVE: Respect the safety and cleanliness specific to high pressure diesel
injection (HDi) engines.
EGR v
alve.Connect tool [1]on the capsule takeoff (2).
Apply a vacuum of approx.0,6 barseveral times to activate the rod «a».
In abruptly suppressing the vacuum, the valve should click and lock itself back on its seating.
Regulation electrovalve (EGR).(Engine:8HX8HW).Check to be performed between the electrovalve (1)and the EGR valve (2).
Link the tool [1]in series, between the electrovalve (1)and the capsule (2).
Compare the values noted with those in the table below.
Regulation electrovalve (EGR).(Engine:8HV8HY).Check to be performed between the electrovalve (2)and the EGR valve (1).
Link the tool [1] in series, between the electrovalve (2)and the capsule (1).
Compare the values noted with those in the table below.
Engine speed (rpm) Vacuum value
780 0,5
2500 0
B1HP15GD
B1HP1K6D
C2 C3

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INJECTION
CHECKS: EXHAUST GASES RECYCLING CIRCUIT
Engines: 9HZ 9HY
B1HP1UPC
B1HP1UQC
XSARA PICASSO
Exhaust gas recycling (EGR) valve.
(1)
Exhaust gas recycling (EGR) electrovalve
NOTE:The engine ECU pilots the EGR valve.
Perform the check with the aid of a diagnostic tool.
Carry out the following operations with the diagnostic tool:
«INJECTION» menu.
Actuator tests.
EGE electrovalve.
Check that you can hear the click from the EGR regulation electrovalve.
Double butterfly housing (vehicle with particle filter).
(2)
Double butterfly housing.
Perform the check with the aid of a diagnostic tool.
Carry out the following operations with the diagnostic tool:
«INJECTION» menu.
Actuator tests.
Butterfly.
EGR exchanger butterfly.
Check that you can hear the click from the double butterfly housing.

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INJECTION
CHECKS: EXHAUST GASES RECYCLING CIRCUIT
Engines: RHY RHZ
XSARA PICASSO
Tools.
[1]
Manual vacuum pump : FACOM DA 16
IMPERATIVE: Respect the safety and cleanliness requirements.
EGR valve.
Connect the tool [1]to the capsule union (1).
Apply several times in succession a vacuum of approx.0.6 barto activate the rod "a".
In abrupt reaction to the vacuum, the valve should close on its seating with a clicking
noise.
Exhaust gas reycling (EGR) electrovalve. Check, not under load, between the electrovalve (2)and the EGR valve (1).
Connect the tool [1]between the electrovalve (2)and the capsule (1).
Compare readings with the values in the table below.
Engine speed (rpm) Vacuum value
7800,5
25000
B1HP12GD

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INJECTION
PARTICLE FILTER SAFETY AND CLEANLINESS REQUIREMENTS
General.
ESSENTIAL: Given the very high pressures prevailing in the fuel high pressure circuit (1600 Bars), respect the following regulations.
It is forbidden to smoke in the immediate proximity of the high pressure circuit during a repair.
Avoid working close to flames or sparks.When the engine is running:
Do touch the fuel high pressure circuit.
Always keep out of range of possible projections of fuel, which could cause serious injuries.
Do not place your hand near to any leak on the fuel high pressure circuit. After the engine has stopped, wait 30 seconds before starting any operation.
NOTE:The waiting time is necessary to allow the fuel high pressure circuit to return to atmospheric pressure.
Safety rules.
IMPERATIVE:Wait at least an hour before starting any repair on the exhaust line.
Forced regeneration of the particle filter:
Check that there are no aerosols or inflammable products inside the vehicle’s boot.
Wear high temperature gloves.
Connect the vehicle to a gas extractor approved for this type of operation.
IMPERATIVE: In the absence of the required installations, carry out the forced regeneration of the particle filter outside the workshop,
in a concreted area well away from any inflammable materials. Place the vehicle in the high position.
ALL TYPES

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INJECTION
SPECIAL FEATURES: FORCED REGENERATION OF THE PARTICLE FILTER
Tools.
Diagnostic stations: LEXIA or PROXIA
Imperative: Respect the safety and cleanliness requirements.
Forced regeneration of the particle filter.
IMPERATIVE: Respect the safety and cleanliness requirements specific to HDi engines.
ESSENTIAL: Connect the vehicle to a gas extractor approved for this type of operation.In the absence of the required installations,carry out the forced regeneration of the particle filter outside the workshop, in a concreted
area well away from any inflammable materials. Place the vehicle in the high position.
WARNING:
Check that the fuel level is sufficient (at least 20 litres).
Start the engine and allow it to warm up (60°C minimum).
Connect the diagnostic tool to the vehicle’s central socket.
Trigger the regeneration cycle, with the diagnostic tool.
Automatic running of the regeneration cycle of the particle filter:
Autocheck by the engine ECU. Stabilisation of engine speed at
4000 rpm, operating with post injection.
Change to idling speed (for 30 seconds).
Stabilisation of engine speed at 3000 rpm, checking of the efficiency of the regeneration of the particle filter.
Change to idling speed.
NOTE:Let the engine run at idling speed for the benefit of cooling.
Stop the engine.
IMPERATIVE: Wait for at least an hour before any operation on the exhaust line.
ALL TYPES