2.
Was a problem found in any of the above areas?
YES
a.
Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
a.
Go to "Rear HO2S Inspection " procedure
Visually/physically inspect the following conditions:
- Exhaust system between HO2S and Three way catalyst for air leakage
- Damage, and for loose or missing hardware:
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 "Rear HO2S Inspection " procedure
Visually/physically inspect the rear HO2S for the following conditions:
- Ensure that the HO2S is securely installed.(Pigtail and wiring harness not making contact with the exhaust pipe)
- Check for corrosion on terminals
- Check for terminal tension ( at the HO2S and at the ECM)
- Any road damage
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 "TWC Inspection " procedure
Visually/physically inspect the three-way catalyst(TWC) converter for the following damage:
- Severe discoloration caused by excessive temperature
- Dents and holes
- Internal rattle caused by a damaged catalyst
Also, ensure that the TWC is a proper original equipment manufacturer part.
Was a problem found?
YES
Replace TWC and go to "Verification of Vehicle Repair" procedure
NO
Thoroughly check connectors for loose or poor connections, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure
