| STEP | CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK |
|---|
| 1 | Earth voltage checkTurn the key to the MAR positionUsing the voltmeter connect the negative probe at pin 2 of the sensor and the positive probe to the battery positive and check for a voltage of around 5 VoltsMove on to Step 2 | Restore the electrical continuity of the cable between the engine control unit and the sensor. If OkReplace the engine control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 2 | Power supply checkTurn the key to the MAR position and, using the voltmeter, check for a voltage of around 5 Volts between pin 1 and the earthMove on to Step 3 | Restore the electrical continuity of the cable between the engine control unit and the sensor. If OkReplace the engine control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 3 | Pressure signal checkConnect the wiring to the sensorCheck between pin 3 and the earth for a voltage signal dependent on the pressure, as illustrated in the attached graph | Replace the pressure sensor Op. 1060G16 EXCESS PRESSURE SENSOR - R.R. Restore the electrical continuity of the cable coming from the engine control unit See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT If the check is OKReplace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
