Component Inspection
SENSOR INSPECTIONNOTE:
(1) Before checking, warm up the engine until the engine coolant temperature reaches 80 to 95°C (176° to 205°F).
(2) Use an accurate digital voltmeter.
- Replace the oxygen sensor if there is a malfunction.
1. Disconnect the heated oxygen sensor connector, and measure the resistance between terminal 3 and terminal 4.
Standard value
2. Replace the oxygen sensor it there is a malfunction
Tightening torque
Heated oxygen sensor 50 - 60 Nm (500 - 600 kg.cm, 37 - 44 lb.ft)
USING VOLTMETER
NOTE: If you release the accelerator pedal suddenly with the engine running about 4000 rpm, the fuel supply will be stopped for a while. When you suddenly press the accelerator pedal, the voltage will reach 'B' range. Then, when you let the engine idle again, the voltage fluctuates between 'A' and 'B' range. In this case, the O2 sensor can be determined as good.