312003190 - 1060GN CHECK ENGINE CONTROL UNIT CONNECTIONS
| STEP | CHECK TO BE PERFORMED | RESOLUTION 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 potentiometerTurn 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 ADisconnect the wiring harness connector from engine control unit connector BTurn 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.R |