Component Inspection

• Visual Check 

1. IG "OFF" & Disconnect HO2S (B1/S1) connector.
2. Check that HO2S (B1/S1) is contaminated or damaged by foreign materials.
3. Has a problem been found?

   YES 

   • Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of vehicle Repair " procedure.

   NO 

   • Substitute with a known - good HO2S (B1/S1) and check for proper operation. If the problem is corrected, replace HO2S (B1/S1) and go to "Verification of Vehicle Repair " procedure.