A/F Sensor
- Check that A/F sensor signal is output properly. See INSPECTION OF ECM AND ITS CIRCUITS
.
If faulty condition is found, check the following.
- Wire harness and connections
- Exhaust system leakage
If check results are satisfactory, replace A/F sensor. See A/F (AIR FUEL RATIO) SENSOR, HO2S (HEATED OXYGEN SENSOR) REMOVAL AND INSTALLATION .