Page 299 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

TASK 2: Checking of pressure sensor (Fig 1)

Note: Air intake pressure, atmospheric pressure,vapor pressure in the fuel tank and fuel injection
pressure sensors are used in the vehicle. But the testing procedure of the sensors used in the vehicle
is same for all the sensors.

1 Identify the location of the sensor.
Fig 1
2 Use the multi meter, set in AC mV range.
3 Start the engine, keep it in running.
4 Ground the black terminal
5 Touch the red terminal

6 If any voltage say at about 200 to 400mV then the
sensor is functioning correctly.
7 If not develops any voltage then replace the
sensor.

TASK 3: Checking of Mass air flow sensor & IAT Sensor (Fig 1)

Fig 1

1 Disconnect battery negative cable.
2 Remove MAF and IAT sensor wiring connector.

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CITS : Automotive - Mechanic Diesel - Exercise 16.3