Visual/Physical Inspection

Visually/physically inspect the following items:
'- Check for corrosion on terminals.

'- Check for terminal tension (at the HO2S and at the PCM)

'- Check for damaged wiring.

'- Check the HO2S ground circuit for a good connection.

'- Check front and rear HO2S for connections being reversed.
Was a problem found in any of the above areas?
YES
- 'Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
NO
- Go to next step as below.