Supercharging pressure solenoid (pierburg) valve operation check

Make: Fiat
Model: Bravo Factory Service Manual
Year: 2007–2014
Section: Engine supercharging system › Supercharging pressure solenoid (pierburg) valve operation check

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EngineSupercharging pressure solenoid (pierburg) valve operation check

SUPERCHARGING PRESSURE SOLENOID (PIERBURG) VALVE OPERATION CHECK

Check 1064BB

1.4 16v TJet

STEP	CHECK TO BE PERFORMED	REMEDIAL ACTION IF THE CHECK IS NOT OK
1	Solenoid valve resistance check Disconnect the wiring for the solenoid valve. Check that the resistance between the two terminals of the solenoid valve is 30 ohm ±10% at 20 °C (FIG.1).	Replace the turbopressure control solenoid valve Op. 1064B38 WASTE GATE SUPERCHARGING PRESSURE ADJUSTMENT SOLENOID VALVE - R.R.
2	Solenoid valve ducts check Connect to connector 3 of the supercharging pressure solenoid valve using the vacuum pump (FIG.1) n.° 2000015500 Operate the pump at a pressure below 0.50 bar (to prevent damaging the solenoid valve) Check that nothing is preventing the flow of air between connectors 3 and 2	Replace the turbopressure control solenoid valve Op. 1064B38 WASTE GATE SUPERCHARGING PRESSURE ADJUSTMENT SOLENOID VALVE - R.R.
3	Solenoid valve operation check Connect to connector 1 of the supercharging pressure solenoid valve using the vacuum pump (FIG.1) n.° 2000015500 Operate the pump at a pressure below 0.50 bar (to prevent damaging the solenoid valve) Check that nothing is preventing the flow of air between connectors 1 and 2 Connect the terminals of the solenoid valve to a 12 volt battery (using disconnector AD 233 N° 1806387000) Operate the pump at a pressure below 0.50 bar (to prevent damaging the solenoid valve) Check that nothing is preventing the flow of air between connectors 1 and 2 (internal passage closed)	Replace the turbopressure control solenoid valve Op. 1064B38 WASTE GATE SUPERCHARGING PRESSURE ADJUSTMENT SOLENOID VALVE - R.R.
4	Pressure control solenoid valve signal check Connect the Examiner in voltmeter mode: (using disconnector AD 233 N° 1806387000) insert the red probe in pin 2 of the solenoid valve and the black probe in pin 1 Set the Examiner basic time at 2 seconds and 20 V f.s. Start the engine Check for a square wave signal as illustrated in the graph	Restore the continuity of the wiring between the engine management control unit and the solenoid valve If the signal is interrupted at the control unit output. Replace the engine control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

STEP

CHECK TO BE PERFORMED

REMEDIAL ACTION IF THE CHECK IS NOT OK

Solenoid valve resistance check

Disconnect the wiring for the solenoid valve. Check that the resistance between the two terminals of the solenoid valve is 30 ohm ±10% at 20 °C (FIG.1).

Replace the turbopressure control solenoid valve

Op. 1064B38 WASTE GATE SUPERCHARGING PRESSURE ADJUSTMENT SOLENOID VALVE - R.R.

Solenoid valve ducts check

Connect to connector 3 of the supercharging pressure solenoid valve using the vacuum pump (FIG.1) n.° 2000015500

Operate the pump at a pressure below 0.50 bar (to prevent damaging the solenoid valve)

Check that nothing is preventing the flow of air between connectors 3 and 2

Replace the turbopressure control solenoid valve

Op. 1064B38 WASTE GATE SUPERCHARGING PRESSURE ADJUSTMENT SOLENOID VALVE - R.R.

Solenoid valve operation check

Connect to connector 1 of the supercharging pressure solenoid valve using the vacuum pump (FIG.1) n.° 2000015500

Operate the pump at a pressure below 0.50 bar (to prevent damaging the solenoid valve)

Check that nothing is preventing the flow of air between connectors 1 and 2

Connect the terminals of the solenoid valve to a 12 volt battery (using disconnector AD 233 N° 1806387000)

Operate the pump at a pressure below 0.50 bar (to prevent damaging the solenoid valve)

Check that nothing is preventing the flow of air between connectors 1 and 2 (internal passage closed)

Replace the turbopressure control solenoid valve

Op. 1064B38 WASTE GATE SUPERCHARGING PRESSURE ADJUSTMENT SOLENOID VALVE - R.R.

Pressure control solenoid valve signal check

Connect the Examiner in voltmeter mode: (using disconnector AD 233 N° 1806387000) insert the red probe in pin 2 of the solenoid valve and the black probe in pin 1

Set the Examiner basic time at 2 seconds and 20 V f.s.

Start the engine

Check for a square wave signal as illustrated in the graph

Restore the continuity of the wiring between the engine management control unit and the solenoid valve

If the signal is interrupted at the control unit output.

Replace the engine control unit

Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R