SMOG VENTILATION SENSOR INSPECTION

PROCEDURE


  1. INSPECT SMOG VENTILATION SENSOR (HC, CO)


    1. B004FUMC01
      *a

      Component without harness connected

      (Smog Ventilation Sensor)

      Connect a positive (+) lead from the battery to terminal 3 (IG) and a negative (-) lead to terminal 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 exhaust gas, the resistance increases.

      Tech Tips

      The resistance of the sensor before being exposed to exhaust gas is 10 kΩ to 40 kΩ.

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

  2. INSPECT SMOG VENTILATION SENSOR (NOx)


    1. B004FUMC02
      *a

      Component without harness connected

      (Smog Ventilation Sensor)

      Connect a positive (+) lead from the battery to terminal 3 (IG) and a negative (-) lead to terminal 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 exhaust gas, the resistance increases.

      Tech Tips

      The resistance of the sensor before being exposed to exhaust gas is 10 kΩ to 40 kΩ.

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