[13A] MULTIPORT FUEL INJECTION (MPI) <4G63> - - ON-VEHICLE SERVICE - OXYGEN SENSOR CHECK <DOHC>PRINT PAGE / INDEX / PRIOR / NEXT
OXYGEN SENSOR CHECK <DOHC>
       
    1. Disconnect the oxygen sensor connector and connect the special tool Test harness (MB991658) to the connector on the oxygen sensor side.
         
      1. Make sure that there is continuity (4.5 - 8.0 Ω at 20°C) between terminal No. 1 and terminal No. 3 on the oxygen sensor connector.
      1. If there is no continuity, replace the oxygen sensor.
      1. Warm up the engine until engine coolant is 80°C or higher.
           
        1. Use a jumper wire to connect terminal No. 2 of the oxygen sensor connector to the battery (+) terminal and terminal No. 1 to the batter (-) terminal.
        1. Connect a digital voltage meter between terminal No. 3 and terminal No. 4.
        1. While repeatedly racing the engine, measure the oxygen sensor output voltage.
        Standard value:
        Engine
        		 Oxygen sensor output voltage
        		 Remarks
        When racing the engine
        		 0.6 - 1.0 V
        		 If you make the air/fuel ratio rich by racing the engine repeatedly, a normal oxygen sensor will output a voltage of 0.6 - 1.0 V.
           CAUTION
           Be very careful when connecting the jumper wire; incorrect connection can damage the oxygen sensor.
        1. If the sensor is defective, replace the oxygen sensor.
          2. NOTE: For removal and installation of the oxygen sensor, refer to GROUP 15 - Exhaust Pipe and Main Muffler .
        [13A] MULTIPORT FUEL INJECTION (MPI) <4G63> - - ON-VEHICLE SERVICE - OXYGEN SENSOR CHECK <DOHC>PRINT PAGE / INDEX / PRIOR / NEXT
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