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
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 linear sensor. Turn the ignition key ON. Select the following system on the diagnostic equipment: Diesel electronic injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9) Check that error P0697 – Power supply to sensors 3 is “Present”. | Replace the linear sensor Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - R.R. |
| 2 | Turn the ignition key ON. Check that the resistance across pin 12 (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 linear sensor and the engine control unit |
| 3 | Turn the ignition key OFF. Check that the resistance between pin 12 (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 linear sensor and the engine control unit |
| 4 | Replace the engine management control unit |
| 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 accelerator pedal potentiometer 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 PO697 is "Present" | Replace the accelerator pedal Op. 1060A20 INJECTION PUMP - CHECK TIMING AND ADJUST |
| 2 | Turn the ignition key OFF. Disconnect the wiring harness connector from the linear sensor. Turn the ignition key ON. Check that error PO697 is "Present" | Replace the linear sensor Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - 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 32 (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 |
| 4 | Check that the resistance across pin 15 (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 |
| 5 | Turn the ignition key OFF. Check that the resistance between pin 15 (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 |
| 6 | Turn the ignition key ON. Check that the resistance across pin 10 (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 linear sensor and the engine control unit |
| 7 | Check that the resistance across pin 37 (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 linear sensor and the engine control unit |
| 8 | Turn the ignition key OFF. Check that the resistance between pin 37 (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 linear sensor and the engine control unit |
| 9 | Replace the engine management control unit |
| 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 accelerator pedal potentiometer 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 PO697 is "Present" | Replace the accelerator pedal Op. 1068A20 ACCELERATOR PEDAL WITH BUILT-IN POTENTIOMETER - R.R |
| 2 | 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 32 (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 |
| 3 | Check that the resistance across pin 15 (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 |
| 4 | Turn the ignition key OFF. Check that the resistance between pin 15 (wiring side) of the control unit See M010 ENGINE MANAGEMENT ECU and Earth is more than 500 kOhm. | Repair or if necessary replace the electrical wiring between the accelerator pedal potentiometer and the engine control unit |
| 5 | Replace the engine management control unit |
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