Check timing sensor operation
- Make
- Alfa Romeo
- Model
- 159 Factory Service Manual
- Year
- 2005–2011
- Section
- Engine ignition › Check timing sensor operation
CHECK TIMING SENSOR OPERATION
| 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 timing sensor. Press the START/STOP button. Check that the voltage across pin 1 of the control unit and earth is between 4.8 and 5.2 V | Repair or if necessary replace the electrical wiring between the timing sensor and the engine control unit |
| 2 | Check that the voltage across pin 1 and 3 of the sensor is between 4.8 and 5.2 V Move on to Step 4 | Move on to Step 3 |
| 3 | Repair any faults in the wiring between the engine control unit and the timing sensor See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT The test can be considered over | Replace the engine management control unit |
| 4 | Check that the voltage across pin 2 of the control unit and earth is between 4.8 and 5.2 V | Move on to Step 3 |
| 5 | Check for faults in the timing sensor, such as intermittent contacts, missing teeth, reference point or incorrect gap | Restore correct operation. Replace the timing sensor if necessary Op. 5510CG CHECK ON OPERATION OF TIMING SENSOR |
| 6 | Replace the timing sensor Op. 5510CG CHECK ON OPERATION OF TIMING SENSOR and check the fault has disappeared. The test can be considered over | Repair the original timing sensor and replace the engine management control unit. |
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