Component Inspection

Visual Check 

1. Ignition "OFF" and disconnect HO2S (S2) connector.
2. Check that HO2S (S2) is contaminated or damaged by foreign materials.
3. Does the HO2S (S2) work properly? (Check variation)

   YES 

   • Go to "Verification Of Repair " procedure.

   NO 

   • Carefully re-do this troubleshooting guide steps.
   • If problem still occurs, replace HO2S (S2) and then go to "System Inspection" procedure.