[13A] MULTIPORT FUEL INJECTION (MPI) <4G63> - - ON-VEHICLE SERVICE - OXYGEN SENSOR CHECK <DOHC> | PRINT PAGE / INDEX / PRIOR / NEXT

| OXYGEN SENSOR CHECK <DOHC>
| Disconnect the oxygen sensor connector and connect the special tool Test harness (MB991658) to the connector on the oxygen sensor side.
| 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. If there is no continuity, replace the oxygen sensor. Warm up the engine until engine coolant is 80°C or higher.
| 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. Connect a digital voltage meter between terminal No. 3 and terminal No. 4. 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. If the sensor is defective, replace the oxygen sensor. 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

©2004 Mitsubishi Motors Corporation