08 · Engine

Injector operation check

Make: Fiat
Model: Croma Factory Service Manual
Year: 2005–2010
Section: Diesel injection system › Injector operation check

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EngineInjector operation check

INJECTOR OPERATION CHECK

Check 1060FA

1.9 JTD 8v, 1.9 JTD 16v

Proceed as follows on the injector presumed to be faulty.

STEP	CHECK TO BE PERFORMED	RESOLUTION IF THE CHECK IS NOT OK
1	Turn the ignition key OFF. Disconnect the wiring harness connector from engine control unit connector B Turn the ignition key ON. Check that the resistance between Earth and: Pin 16 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT is less than 0.3 V	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
2	Turn the ignition key OFF. Check that the resistance between Earth and: Pin 16 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT is greater than 500 kOhm Move on to Step 6	Move on to Step 3
3	Disconnect the cable loom connector from the injector. Check that the resistance between Earth and: Pin 16 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT is greater than 500 kOhm	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
4	Check that the resistance between Earth and: Pin 47 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 31 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 46 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 33 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT is greater than 500 kOhm	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
5	Replace the injector The test can be considered over
6	Disconnect the cable loom connector from the injector. Check that the resistance between: Pin 16 and 47 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 and 31 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 and 46 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 and 33 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT is greater than 500 kOhm	Repair or, if necessary, replace the electrical wiring of the engine control unit See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
7	Check that the resistance between pin 1 of the injector See N070 INJECTOR and: Pin 16 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT is less than 5 Ohm	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
8	Check that the resistance between pin 2 of the injector See N070 INJECTOR and: Pin 47 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 31 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 46 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 33 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT is less than 5 Ohm	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
9	Check that the resistance between pin 1 and 2 of the injector See N070 INJECTOR is between 0.3 and 0.7 Ohm	Replace the injector
10	Carry out a visual check on the condition of the injector and connector pipes to ensure it is okay	Replace the faulty component
11	Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R

2.4 JTD 20v

Proceed as follows on the injector presumed to be faulty.

STEP	CHECK TO BE PERFORMED	RESOLUTION IF THE CHECK IS NOT OK
1	Turn the ignition key OFF. Disconnect the wiring harness connector from engine control unit connector B Turn the ignition key ON. Check that the resistance between Earth and: Pin 16 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 18 of the control unit for injector 5 See M010 ENGINE MANAGEMENT CONTROL UNIT is less than 0.3 V	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
2	Turn the ignition key OFF. Check that the resistance between Earth and: Pin 16 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 18 of the control unit for injector 5 See M010 ENGINE MANAGEMENT CONTROL UNIT is greater than 500 kOhm Move on to Step 6	Move on to Step 3
3	Disconnect the cable loom connector from the injector. Check that the resistance between Earth and: Pin 16 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 18 of the control unit for injector 5 See M010 ENGINE MANAGEMENT CONTROL UNIT is greater than 500 kOhm	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
4	Check that the resistance between Earth and: Pin 47 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 31 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 46 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 33 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 48 of the control unit for injector 5 See M010 ENGINE MANAGEMENT CONTROL UNIT is greater than 500 kOhm	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
5	Replace the injector The test can be considered over
6	Disconnect the cable loom connector from the injector. Check that the resistance between: Pin 16 and 47 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 and 31 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 and 46 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 and 33 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 18 and 48 of the control unit for injector 5 See M010 ENGINE MANAGEMENT CONTROL UNIT is greater than 500 kOhm	Repair or, if necessary, replace the electrical wiring of the engine control unit See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
7	Check that the resistance between pin 1 of the injector See N070 INJECTOR and: Pin 16 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 2 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 1 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 17 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 18 of the control unit for injector 5 See M010 ENGINE MANAGEMENT CONTROL UNIT is less than 5 Ohm	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
8	Check that the resistance between pin 2 of the injector See N070 INJECTOR and: Pin 47 of the control unit for injector 1 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 31 of the control unit for injector 2 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 46 of the control unit for injector 3 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 33 of the control unit for injector 4 See M010 ENGINE MANAGEMENT CONTROL UNIT Pin 48 of the control unit for injector 5 See M010 ENGINE MANAGEMENT CONTROL UNIT is less than 5 Ohm	Repair or, if necessary, replace the electrical wiring between the engine management control unit and the injector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
9	Check that the resistance between pin 1 and 2 of the injector See N070 INJECTOR is between 0.3 and 0.7 Ohm	Replace the injector
10	Carry out a visual check on the condition of the injector and connector pipes to ensure it is okay	Replace the faulty component
11	Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R

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