Rear HO2S(B1S2) check
B1S2 visual check
- Check assembling state of B1S2. (Check the interference between sensor wiring and exhaust pipe.)
- Check corrosion, contamination, or damage on sensor terminal and connector.
Is there something wrong?
YES
Repair as necessary and then, go to "Verification of Vehicle Repair" procedure.
NO
Go to "Catalyst converter check" procedure.
Catalyst converter check
Catalyst converter visual check
- Check discoloration by over-heating.
- Check deflection or crack(hole).
- Check noise.
Check whether the catalyst converter is genuine.
Is there something wrong?
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
Substitute with a known-good ECM and check for proper operation. If the problem is corrected,replace ECM and then go to "Verification of Vehicle Repair" procedure.
