Monitor Scantool Data

Ignition "OFF".
Connect Scantool and Engine "ON".
Monitor HO2S parameter and parameters related to Fuel System Too Lean on CURRENT DATA.

Fig 1: Scantool Display - HO2S Parameter
Are the parameters related to Fuel System Too Lean displayed within specifications?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Check Sensors and Injectors related to this Fuel System Too Lean according to the troubleshooting Guide.
  Repair or replace as necessary and Go to "SYSTEM INSPECTION " procedure.