Inspection of Oxygen Sensor

INSPECTION OF OXYGEN SENSOR
CHECK OXYGEN SENSOR WITH VOLTMETER
(a) Warm up the engine to normal operating temperature.
(b) Connect the voltmeter to the service connector.
Service connector location: Left fender apron Connect the positive (+) testing probe to the Ox terminal and negative (-) testing probe to terminal E.
(c) Race the engine at 2,500 rpm for about 90 seconds.
(d) Maintain engine speed at 2,500 rpm.
(e) Check that the needle of the voltmeter fluctuates8 times or more in 10 seconds within 0 - 1.0 volts.

NOTE:
- If this test is positive, the Oxygen sensor is OK.
- If not, inspect the other parts, hose connections and wiring of air suction and fuel system feedback control system. Air Injection Fuel Delivery and Air Induction
If no problem is found, replace the Oxygen sensor.