Check Air Fuel (A/F) Sensor Adjustment Values
SERVICE PROCEDURECheck Air Fuel (A/F) Sensor Adjustment Values
1. Connect the CONSULT PC to the vehicle.
2. Turn the ignition ON.
3. Open ASIST on the CONSULT PC and start C-III plus.
4. Wait for the plus VI to be recognized / connected.
^ Serial number will display when the plus VI is recognized / connected.
5. Select Diagnosis (One System).
6. Select ENGINE.
7. Select Data Monitor.
8. Select A/F ADJ-B1 and A/F ADJ-B2.
^ Use arrows to scroll and find the above items.
9. Select Start.
10. Check values for A/F ADJ-B1 and A/F ADJ-B2.
^ Value for each sensor should be between - 0.300 and 0.300.
^ If a sensor (one or both) is out of the above specified range, make a note of it.
^ Sensor(s) that are out of the specified value will be replaced later in this procedure.
NOTE:
Most vehicles serviced under this campaign will not require new sensors. It is expected that only 5% of serviced vehicles will need sensor replacement.
DO NOT replace A/F sensors at this time.
If needed, replace A/F sensors after ECM reprogramming.
11. Go to ECM Reprogramming.