System Inspection

Air Leakage Inspection

1. Visually/physically inspect the following items:
- Vacuum hoses for splits, kinks and improper connections.
- Exhaust system between HO2S and Three way catalyst for air leakage
- EVAP system for leakage
- PCV hose for proper installation
2. Was a problem found in any of the above areas ?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) Go to next step as below

Visual / Physical Inspection

1. Visually/physically inspect the following items:
- Check for corrosion on terminals
- Check for terminal tension (at the HO2S and at the ECM)
- Check for damaged wiring
- Check the HO2S ground circuit for a good connection
- Check front and rear HO2S for connections being reversed.
2. Was a problem found in any of the above areas ?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) Go to Component Inspection