2.
Connect Scantool and monitor the "RR OXYGEN SNSR-B2" parameter on the Scantool data list.
Test Condition : Engine "ON" & In Idle("Closed Loop")condition.
Specification : Above 0.6V.
Warm up the engine to normal operating temperature and check that HO2S signal is active.
Connect Scantool and monitor the "RR OXYGEN SNSR-B2" parameter on the Scantool data list.
Test Condition : Engine "ON" & In Idle("Closed Loop")condition.
Specification : Above 0.6V.
Is sensor data within the specification?
YES
▶ Check for poor connection between ECM 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.
NO
▶ Check HO2S for contamination, deterioration, or damage. Substitute with a known-good HO2S and check for proper operation. If the problem is corrected, replace HO2S and then go to "Verification of Vehicle Repair" procedure.
