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Home >> Mazda >> 1998 >> MPV ES 2WD V6-3.0L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Oxygen Sensor >> Testing and Inspection
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Oxygen Sensor: Testing and Inspection

Heated Oxygen Sensor Inspection




1. Connect the SSTs (NGS tester) to the data link connector-2 located under the driver side dashboard.




2. Select the "PID/DATA MONITOR AND RECORD" function on the NGS tester display.




3. Select "FHO2S" and "RHO2S" on the NGS tester display. NGS tester measures and shows the voltage.

4. If not as specified, inspect the following.
(1) intake-air system
(2) Fuel system
(3) On-board diagnostic system
5. If these systems are okay, replace the heated oxygen sensor.

Oxygen Sensor Heater Testing

1. Disconnect the heated oxygen sensor connector.




2. Measure the resistance between heated oxygen sensor terminals C and D by using an ohmmeter.

Specification:Approx. 13 Ohms[20°C{68°F)]

3. If not as specified, replace the heated oxygen sensor.
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