Check on operation of supercharging pressure solenoid valve (pierburg)

Make: Alfa Romeo
Model: 159 Factory Service Manual
Year: 2005–2011
Section: Engine supercharging system › Check on operation of supercharging pressure solenoid valve (pierburg)

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EngineCheck on operation of supercharging pressure solenoid valve (pierburg)

CHECK ON OPERATION OF SUPERCHARGING PRESSURE SOLENOID VALVE (PIERBURG)

Check 1064BB

1.9 JTD 8V, 1.9 JTD 16V, 2.4 JTD 20V

	CHECK TO BE PERFORMED	RESOLUTION IF THE CHECK IS NOT OK
1	Press the START/STOP button and turn off the engine. Disconnect the wiring harness connector from the turbine variable geometry solenoid. See L036 TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE Press the START/STOP button. Measure the voltage between Pin 1 of the solenoid wiring side connector and Earth. Ensure it is greater than 11V. See L036 TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE Press the START/STOP button. Move on to Step 4	Move on to Step 2
2	In the engine compartment junction unit, remove fuse F11 (third from the right in the lower row) See B001 JUNCTION UNIT Press the START/STOP button. Check the voltage between the fuse inlet contact and earth. Ensure it is greater than 11 V.	Replace the junction unit Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
3	If fualts are present, repair or if necessary replace the electrical wiring between the engine compartment junction unit and the solenoid. See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT The test can be considered over	Replace the junction unit Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
4	Disconnect the wiring harness connector from engine control unit connector B See M010 ENGINE MANAGEMENT ECU Press the START/STOP button. Measure the voltage between Pin 2 of the solenoid wiring side connector and Earth. Ensure it is less than 0.3 V. See L036 TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE	Repair or if necessary replace the electrical wiring between the engine control unit and the solenoid See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
5	Press the START/STOP button. Measure the voltage between Pin 2 of the solenoid wiring side connector and Earth. Ensure it is greater than 500 kOhm. See L036 TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE	Repair or if necessary replace the electrical wiring between the engine control unit and the solenoid See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
6	Measure the resistance between Pin 1 of the solenoid wiring side connector and Pin 7 of engine control unit wiring side connector. Ensure it is less than 5 Ohms. See L036 TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE See M010 ENGINE MANAGEMENT ECU	Repair or if necessary replace the electrical wiring between the engine control unit and the solenoid See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
7	Reconnect the wiring harness connector to the engine control unit See M010 ENGINE MANAGEMENT ECU Connect a test bulb between pins 1 and 2 of the solenoid See L036 TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE Press the START/STOP button. Carry out the following active diagnosis: Turbo regulator, check that the bulb comes on. Move on to Step 9	Move on to Step 8
8	Reconnect the wiring harness connector to the solenoid See L036 TURBINE VARIABLE GEOMETRY CONTROL SOLENOID VALVE Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R The test can be considered over
9	Replace the solenoid valve Op. 1064B42 SOLENOID CONTROLLING TURBOCHARGER VANE POSITION ACTUATOR - R.R

Visually inspect that during start-up, the turbocharger actuator connecting rod (turbine stator vanes adjustment device) moves by around 10 mm in the direction of the actuator.

With the engine switched off, connect connector EX09 and transducer EX06 in the section of pipe between the actuator and the solenoid valve.

Select intake pressure measuring gauge in instrument mode.

Start up the engine and let it idle, then wait until pressure pressure stabilizes.

The reading should not exceed 450-550 mmHg.

The graphic acquisition of the pressure trend can be carried out by selecting either the 2000 or 4000 mmHg scale.

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