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Component Inspection: Notes

Visual Check
1. IG KEY "OFF".
2. Disconnect HO2S (S1) connector.
3. Check if HO2S (S1) is contaminated or damaged by foreign materials.
4. Has a problem been found?
  YES
  
  Go to "CHECK HO2S (S1) PERFORMANCE " procedure.
  
  NO
  
  Substitute with a known-good HO2S (S1) and check for proper operation. If the problem is corrected, replace HO2S (S1) and go to "VERIFICATION OF VEHICLE REPAIR " procedure.