08 · Engine

Check engine control unit connections

Make: Alfa Romeo
Model: 159 Factory Service Manual
Year: 2005–2011
Section: Diesel injection system › Check engine control unit connections

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EngineCheck engine control unit connections

CHECK ENGINE CONTROL UNIT CONNECTIONS

Check 1060GP

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

STEP	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 FAP differential pressure sensor. Press the START/STOP button. Select the following system on the diagnostic instrument: Electronic diesel injection system EDC16C39. Check that error P0697 – Sensor 3 power supply 3 is “Present”	Replace the differential pressure sensor Op. 1080B82 PARTICULATE FILTER DIFFERENTIAL PRESSURE (D.P.F.) SENSOR - R R
2	Press the START/STOP button. Disconnect the wiring harness connector from the linear sensor. See K120 LINEAR SENSOR FOR FANS Press the START/STOP button. Select the following system on the diagnostic equipment: Diesel EDC16C39 electronic injection system. Check that error P0697 – Power supply to sensors 3 is “Present”.	Replace the linear sensor Op. 5040B20
3	Press the START/STOP button. Disconnect the wiring harness connector from engine control unit connector A Press the START/STOP button. Check that the voltage across pin 44 of the control unit See M010 ENGINE MANAGEMENT ECU and the earth is greater than 0.3 V.	Repair or if necessary replace the electrical wiring between the FAP differential pressure sensor and the engine control unit See E5070 PARTICLE FILTER SYSTEM
4	Press the START/STOP button. Check that the voltage across pin 44 of the control unit See M010 ENGINE MANAGEMENT ECU and the earth is more than 500 kOhm.	Repair or if necessary replace the electrical wiring between the FAP differential pressure sensor and the engine control unit See E5070 PARTICLE FILTER SYSTEM
5	Press the START/STOP button. Check that the voltage across pin 22 of the control unit See M010 ENGINE MANAGEMENT ECU and the earth is greater than 0.3 V.	Repair or if necessary replace the electrical wiring between the linear sensor and the engine control unit See E6021 COMPRESSOR ENGAGEMENT - DESCRIPTION
6	Press the START/STOP button. Check that the voltage across pin 22 of the control unit See M010 ENGINE MANAGEMENT ECU and the earth is more than 500 kOhm.	Repair or if necessary replace the electrical wiring between the linear sensor and the engine control unit See E6021 COMPRESSOR ENGAGEMENT - DESCRIPTION
7	Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R

STEP

CHECK TO BE PERFORMED

RESOLUTION IF THE CHECK IS NOT OK

Press the START/STOP button and turn off the engine.

Disconnect the wiring harness connector from the FAP differential pressure sensor.

Press the START/STOP button. Select the following system on the diagnostic instrument: Electronic diesel injection system EDC16C39. Check that error P0697 – Sensor 3 power supply 3 is “Present”

Replace the differential pressure sensor

Op. 1080B82 PARTICULATE FILTER DIFFERENTIAL PRESSURE (D.P.F.) SENSOR - R R

Press the START/STOP button.

Disconnect the wiring harness connector from the linear sensor.

See K120 LINEAR SENSOR FOR FANS

Press the START/STOP button.

Select the following system on the diagnostic equipment: Diesel EDC16C39 electronic injection system.

Check that error P0697 – Power supply to sensors 3 is “Present”.

Replace the linear sensor

Op. 5040B20

Press the START/STOP button.

Disconnect the wiring harness connector from engine control unit connector A