2.
Was an exhaust leak found?
 | ▶ Repair as necessary and go to "Verification of vehicle Repair" procedure. |
 | ▶ Go to next step as below. |
Check the exhaust system for an exhaust leak near the engine.
Was an exhaust leak found?
| ▶ Repair as necessary and go to "Verification of vehicle Repair" procedure. |
| ▶ Go to next step as below. |
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.
- Intake manifold leak.
- PCV hose for proper installation.
Was a problem found in any of the above areas?
| ▶ Repair as necessary and go to "Verification of vehicle Repair" procedure. |
| ▶ Go to next step as below. |
Visually/physically inspect the following items:
- Ensure that the HO2S is securely installed.
- 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.
Was a problem found in any of the above areas?
| ▶ Repair as necessary and go to "Verification of vehicle Repair" procedure. |
| ▶ Carefully re-do this troubleshooting guide steps. ▶ If no problems were found with the circuits or connectors, replace the HO2S(S2) and go to "Verification of Vehicle Repair" procedure. |
