W/Harness Inspection

Engine Control
P0137 O2 Sensor Circuit Low Voltage (Bank 1 / Sensor 2) - Inspection/Repair:_:W/Harness Inspection

Signal Circuit Inspection

1. Ignition "OFF".
2. Disconnect PCM and HO2S connector.
3. Measure resistance between signal terminal of HO2S(B1S2) harness connector and chassis ground.

Specification :Infinite




4. Is resistance within 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?