312001712 - 5040BA CHECK ON OPERATION OF MULTI-STAGE PRESSURE SWITCH/LINEAR SENSOR
| STEP | CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK |
|---|---|---|
| 1 | Disconnect the cable loom connector from the linear sensor (for the climate control system). See table K120 ELECTRIC POWER ASSISTED STEERING FAULT DISPLAYMeasure 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 2 |
| 2 | Turn the ignition key to STOP.Disconnect the wiring loom connector from the accelerator pedal potentiometerSee table K055 Turn the ignition key to MAR. Measure the voltage between Pin 2 of the sensor and Earth, checking it is within the range of between 4.8 and 5.2 V. See table K120 ELECTRIC POWER ASSISTED STEERING FAULT DISPLAYMove 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 table K041 4WD-LOCK WARNING LIGHT DOES NOT COME ONAirflow Meter. | Move on to Step 6 |
| 4 | If faults are present, repair or if necessary replace the electrical wiring between the airflow meter and the engine control unit. See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT The test can be considered finished. | Replace the air 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 MANAGEMENT The test can be considered finished. | Replace the accelerator pedalOp. 1068A14 |
| 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 finished. | Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.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 table K120 ELECTRIC POWER ASSISTED STEERING FAULT DISPLAY | Move on to Step 8 |
| 8 | Disconnect the air flow meterSee table K041 4WD-LOCK WARNING LIGHT DOES NOT COME ONMeasure the voltage between Pins 1 and 2 of the sensor, checking it is within the range between 4.8 and 5.2 V. See table K120 ELECTRIC POWER ASSISTED STEERING FAULT DISPLAY | 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 finished. | 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 Volt | Move on to Step 6. |
| 11 | Connect a shunt connection cable with a fuse between Pins 2 and 3 of the sensor See table K120 ELECTRIC POWER ASSISTED STEERING FAULT DISPLAYDisplay the A/C Pressure parameter (conditioned air) and check it is less than 4.8 Volt.Move on to Step 6. | Replace the pressure transducer Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - R.R. |