Get Injection -> Checks: Turbo Pressure Guide for Citroen C6 4 Door First Generation (2005-2012)

CHECKS: TURBO PRESSURE

Engine: DT17BTED4

Tools.

[1] Pressure gauge for checking the pressure

: 7073-T.A

: (-).0171.G3

: 4171-T

[2] Tool for checking the inlet air pressure/vacuum

[3] LEXIA diagnostic tool

[4] PROXIA diagnostic 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).

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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.

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96

CHECKS: TURBO PRESSURE

Engine: DT17BTED4

Significant difference in pressure between the two turbochargers:

- Stop the engine.

- Remove the air filter with the two flowmeters.

- Mark the flowmeters "d" and "c".

- Remove both flowmeters.

Refit:

- Flowmeter "d" in place of flowmeter "c".

- Flowmeter "c" in place of flowmeter "d".

Start the engine.

Accelerate to 2500 rpm.

Compare the air flows (mg/stroke) from the two turbochargers:

- If the difference in air flow has changed turbochargers, replace the flowmeter that is faulty.

- If the difference in air flow is coming from the same turbocharger, check the condition of the air inlet

and outlet pipes of this turbocharger: replace or repair the parts that are faulty.

- If no anomaly is detected on the air inlet and outlet pipes of the turbocharger: replace the turbocharger.

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Injection -> Checks: Turbo Pressure for Your Citroen C6 4 Door First Generation (2005-2012)

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