| STEP | CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK |
|---|
| 1 | Air temperature sensor checkDisconnect the pressure sensor connectorConnect an ohmmeter between pins 1 and 2 and check that the resistance value is similar to the attached graph | Replace the sensor Op. 1056B54 INTAKE AIR PRESSURE/TEMPERATURE SENSOR - R.R. |
| 2 | Power supply checkConnect a voltmeter between pins 1 and 3 of the sensor wiringTurn the ignition to MAR and check for a voltage of approximately 5 Volts | Restore the wiring between the sensor and the engine management control unit |
| 3 | Pressure signal checkConnect a voltmeter between pins 3 and 4 of the sensor wiring.With the engine idling, check for a voltage of approximately 3.5 volts.Accelerate and check that the voltage value is similar to the attached graph | Replace the sensor Op. 1056B54 INTAKE AIR PRESSURE/TEMPERATURE SENSOR - R.R. |
