Workshop Manuals Factory service & repair Fiat
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Axles and driveshafts12 Brakes13 Steering14 Suspension and wheels15 Heating, air conditioning and auxiliary units16 Electrical equipment17 Body fittings18 Body panels and frame19 Wiring diagrams and electrical functions20 Wiring harnesses21 Connectors and pin-outs22 Fault diagnosis23 Special tools
Fiat Grande Punto Factory Service Manual (2005-2012)08 · Engine
08 · Engine

Check engine control unit connections

Make
Fiat
Model
Grande Punto Factory Service Manual
Year
2005–2012
Section
Diesel injection system › Check engine control unit connections
EngineCheck engine control unit connections

CHECK ENGINE CONTROL UNIT CONNECTIONS

Check 1060GN

1.3 Multijet

STEPCHECK TO BE PERFORMEDRESOLUTION IF THE CHECK IS NOT OK
1

Turn the ignition key OFF.

Disconnect the wiring harness connector from the timing sensor.

Turn the ignition key ON.

Select the following system on the diagnostic equipment: Marelli Diesel Injection 6F3 EOBD CAN (EP engine 1.3 JTD).

Check that error PO651 is "Present"

Replace the timing sensor

Op. 1060G22 CAM ANGLE SENSOR - R.R

2

Turn the ignition key OFF.

Disconnect the wiring harness connector from the accelerator pedal potentiometer

Turn the ignition key ON.

Check that error PO651 is "Present"

Replace the accelerator pedal

Op. 1068A20 ACCELERATOR PEDAL WITH BUILT-IN POTENTIOMETER - R.R

3

Turn the ignition key OFF.

Disconnect the cable loom connector from the engine management control unit connector A.

Turn the ignition key ON.

Check that the resistance across pin 35 (wiring side) 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 accelerator pedal potentiometer and the engine control unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

4

Check that the resistance across pin 83 (wiring side) 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 accelerator pedal potentiometer and the engine control unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

5

Turn the ignition OFF. Measure the resistance between pin 83 (wiring side) 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 accelerator pedal potentiometer and the engine control unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

6

Disconnect the wiring harness connector from engine control unit connector A

Disconnect the wiring harness connector from engine control unit connector B

Turn the key ON. Check the voltage across control unit Pin 21 (wiring side)

See M010 ENGINE MANAGEMENT ECU

and the earth is greater than 0.3 V.

Repair or if necessary replace the electrical wiring between the timing sensor and the engine control unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

7

Check that the resistance across pin 25 (wiring side) 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 timing sensor and the engine control unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

8

Turn the ignition key OFF.

Check that the resistance between pin 25 (wiring side) 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 timing sensor and the engine control unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

9

Replace the engine management control unit

Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R

Parts & tools for this job For 2005 Fiat Grande Punto

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