SMOG VENTILATION SENSOR INSPECTION


  1. INSPECT SMOG VENTILATION SENSOR


    1. A01EOCCE01

      HC, CO


      1. Apply battery voltage to terminals 3 (IG) and 6 (E).

      2. Allow exhaust gas (HC, CO) to travel to the sensing portion of the smog ventilation sensor, and measure the resistance between terminals 1 (SG) and 2 (DGS).

        OK
        When the sensor is exposed to the exhaust gas, the resistance decreases.

        Tech Tips

        The resistance before blowing exhaust gas is 15 to 40 kΩ.

        If the resistance is not as specified, replace the smog ventilation sensor.

    2. A01EOCCE02

      NOx


      1. Apply battery voltage to terminals 3 (IG) and 6 (E).

      2. Allow exhaust gas (NOx) to travel to the sensing portion of the smog ventilation sensor, and measure the resistance between terminals 1 (SG) and 4 (DGS1).

        OK
        When the sensor is exposed to the exhaust gas, the resistance increases.

        Tech Tips

        The resistance before blowing exhaust gas is 2.5 to 40 kΩ.

        If the resistance is not as specified, replace the smog ventilation sensor.