A/F Sensor On-Vehicle Inspection

A/F Sensor On-vehicle Inspection

A/F Sensor Heater
1. Disconnect A/F sensor connector with ignition mode of keyless push start system in "OFF".
2. Measure resistance of A/F sensor connector (sensor side) between terminals "3" and "4" at A/F sensor connector with ohmmeter. Replace A/F sensor if any faulty conditions are found.

NOTE: Sensor temperature affects resistance value largely. Make sure that sensor heater is at specified temperature.

A/F sensor heater resistance
2.16 - 2.90 Ohms at 20 °C (68 °F)