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MPI - On-vehicle Service 13A-135 5. Use the jumper wire to connect terminal No. 1 of the oxygen sensor connector to the battery (+) terminal and terminal No. 3 to the battery (-) terminal. Be very careful when connecting the jumper wire; incorrect connection can damage the oxygen sensor. 6. Connect a digital voltage meter between terminal No. 2 and terminal No. 4. 7. While repeatedly racing the engine, measure the oxygen sensor output voltage. 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 oxy- gen sensor will output a voltage of 0.6 - 1.0 V. 8. 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. <Oxygen sensor (rear)> the special tool (test harness set) to the connector on the oxygen sensor side. 2. Make sure that there is continuity (11 - 18 Ω at 20_C) between terminal No. 3 and terminal No. 4 on the oxygen sensor connector. 3. If there is no continuity, replace the oxygen sensor. NOTE (1) If the MUT-II does not display the standard value although no abnormality is found by the above mentioned continuity test and harness check, replace the oxygen sensor (rear). (2) For removal and installation of the oxygen sensor, refer to GROUP 15 - Exhaust Pipe and Main Muffler. MD998464 Blue Black Red White Jumper wire Oxygen sensor (rear) MB991223 Equipment side connector |