W/Harness Inspection

Control Circuit Inspection

1. Ignition "OFF".
2. Disconnect HO2S connector.
3. Ignition "ON", Engine "OFF".
4. Measure voltage between VN terminal of the sensor harness connector and chassis ground.
Measure voltage between VG terminal of the sensor harness connector and chassis ground.
Measure voltage between VRC terminal of the sensor harness connector and chassis ground.
Measure voltage between VIP terminal of the sensor harness connector and chassis ground.

Specification : Approx. 2 - 3V





5. Is HO2S display near the specification?






Terminal and Connector inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?