199002698 - 5040BD LINEAR SENSOR OPERATION CHECK
| STEP | CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK |
|---|---|---|
| 1 | Turn the ignition key OFF.Disconnect the cable loom connector from the linear sensor (for the cliamte control). Turn the ignition key ON.Measure the voltage between sensor Pin 2 (wiring side) See K120 LINEAR SENSOR FOR FANS and the earth, checking that it is in a range between 4.8 and 5.2 VMove on to Step 7 | Move on to Step 2 |
| 2 | Turn the ignition key OFF. Disconnect the cable loom connector from the accelerator pedal potentiometer. Turn the ignition key ON. Measure the voltage between pin 2 (wiring side) of the sensor See K120 LINEAR SENSOR FOR FANS and the earth, checking that it is in a range between 4.8 and 5.2 V. Move on to Step 5 | Move on to Step 6 |
| 3 | Disconnect the wiring harness connector from the air flow meter and repeat the measurement, checking the voltage is in the range between 4.8 and 5.2 V | Move on to Step 6 |
| 4 | If faults are present, repair or if necessary replace the electrical wiring between the debimeter and the engine control unit. See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT The test can be considered over | Replace the debimeter Op. 1060G10 AIR FLOW METER - R.R. |
| 5 | If faults are present, repair or if necessary replace the electrical wiring between the accelerator pedal potentiometer and the engine control unit. See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT The test can be considered over | Replace the accelerator pedal Op. 1068A20 ACCELERATOR PEDAL WITH BUILT-IN POTENTIOMETER - R.R |
| 6 | If faults are present, repair or if necessary replace the electrical wiring between the linear sensor and the engine control unit. See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT The test can be considered over | Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 7 | Measure the voltage between sensor (wiring side) Pins 1 and 2 See K120 LINEAR SENSOR FOR FANS checking that it is in a range between 4.8 and 5.2 V. Move on to Step 10 | Move on to Step 8 |
| 8 | Turn the ignition key OFF. Disconnect from the air flow meter. Turn the ignition key ON. Measure the voltage between pins 1 and 2 (wiring side) of the sensor See K120 LINEAR SENSOR FOR FANS checking it is in a range between 4.8 and 5.2 V | Move on to Step 6 |
| 9 | If faults are present, repair or if necessary replace the electrical wiring between the linear sensor and the engine control unit. See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT The test can be considered over | Replace the pressure transducer Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - R.R. |
| 10 | Display the A/C Pressure parameter (conditioned air) and check it is less than 0.3 V | Move on to Step 6 |
| 11 | Connect a shunt connection cable with a fuse between Pins 2 and 3 of the sensor (wiring side) See K120 LINEAR SENSOR FOR FANS Display the A/C Pressure parameter (conditioned air) and check it is less than 4.8 V. Move on to Step 6 | Replace the pressure transducer Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - R.R. |