194003948 - 5040BD LINEAR SENSOR OPERATION CHECK
| CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK | |
|---|---|---|
| 1 | Press the START/STOP button and turn off the engine.Disconnect the cable loom connector from the linear sensor (for the climate control system) See K120 LINEAR SENSOR FOR FANSPress the START/STOP button.Measure the voltage between Pin 2 of the wiring side connector and Earth, checking it is within the range between 4.8 and 5.2 V.Move 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 See K055 ACCELERATOR PEDAL POTENTIOMETERTurn the ignition key ON.Measure the voltage between Pin 2 of the sensor and Earth, checking it is within the range between 4.8 and 5.2 V. See K120 LINEAR SENSOR FOR FANSMove on to Step 5 | Move on to Step 6 |
| 3 | Disconnect the cable loom connector from the air flow meter and repeat the measurement, checking the voltage is in the range between 4.8 and 5.2 V See K041 AIR FLOW METER | Move on to Step 6 |
| 4 | If faults are present, repair or if necessary replace the electrical wiring between the flow meter and the engine management control unit. See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENTThe test can be considered over | Replace the flow meter 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 management control unit. See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENTThe 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 MANAGEMENTThe test can be considered over | Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R |
| 7 | Measure the voltage between Pins 1 and 2 of the sensor, checking it is within the range between 4.8 and 5.2 V. See K120 LINEAR SENSOR FOR FANSMove on to Step 10 | Move on to Step 8 |
| 8 | Press the START/STOP button.Disconnect from the air flow meter See K041 AIR FLOW METERPress the START/STOP button.Measure the voltage between Pins 1 and 2 of the sensor, checking it is within the range between 4.8 and 5.2 V. See K120 LINEAR SENSOR FOR FANS | 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 MANAGEMENTThe test can be considered over | Replace the pressure transducer Op. 5040B14 AIR CONDITIONING SYSTEM MULTISTAGE PRESSURE SWITCH - 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 See K120 LINEAR SENSOR FOR FANSDisplay the A/C Pressure parameter (conditioned air) and check it is less than 4.8 VMove on to Step 6 | Replace the pressure transducer Op. 5040B14 AIR CONDITIONING SYSTEM MULTISTAGE PRESSURE SWITCH - R+R |