Component Inspection

■ Exhaust system Inspection 

1. Visually/physically inspect the following conditions:
   • Exhaust system between HO2S and Three way catalyst for air leakage, restriction and damage.
   • Damage, and for loose or missing hardware:
2. Was a problem found in any of the above areas?

   YES 

   • Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • Go to "Rear HO2S Inspection" procedure below.

■ Rear HO2S Inspection 

1. Visually/physically inspect the rear HO2S for the following conditions:
   • Ensure that the HO2S is securely installed. (Pigtail and wiring harness not making contact with the exhaust pipe)
   • Check for corrosion on terminals
   • Check for terminal tension (at the HO2S and at the PCM)
   • Any road damage
2. Was a problem found in any of the above areas?

   YES 

   • Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • Go to "Catalyst converter check" procedure below

■ Catalyst converter check 

1. Visually/physically inspect the Catalyst converter for the following damage:
   • Severe discoloration caused by excessive temperature
   • Dents and holes
   • Internal rattle caused by a damaged catalyst
2. Check whether the catalyst converter is genuine.
3. Was a problem found?

   YES 

   • Substitute with a known-good Catalyst Converter and check for proper operation. If the problem is corrected, replace Catalyst Converter and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure