W/Harness Inspection

P2232 O2 Sensor Signal Circuit Shorted to Heater Circuit (Sensor 2)

Inspection/Repair - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness 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?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
1) Go to "B1S2 circuit inspection" procedure.

Signal Circuit Inspection

1. IG "OFF".
2. Disconnect HO2S (B1/S2) connector.
3. IG "ON" & ENG "OFF".
4. Measure voltage between terminal 2 of HO2S (B1/S2) and chassis ground.
A. Specification : Approx. 0.45 V




5. Is the measured voltage within specification?
YES
1) Go to "Component Inspection" procedure.
NO
1) Repair Short to power in signal circuit and then, go to "Verification of Vehicle Repair"procedure.