Component Inspection

Component Inspection

1. With ignition "OFF", reconnect the HO2S connector
2. Warm up the engine to normal operating temperature and let it idle.
3. Connect Scantool and monitor the O2 SNSR VOL.-B1/S2 parameter on the Scantool data list.
A. Specification : Above 0.7V at idle
4. Is sensor data near the specified value?
YES
1) 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
1) 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