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Mazda
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2010
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5 Touring, 2.3 L
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Engine Control System [L3]
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Heated Oxygen Sensor (Ho2S) Inspection
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HO2S Circuit Open/short Inspection
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Short circuit
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Short circuit
If there is continuity, there is a short circuit. Repair or replace the wiring harness.
HO2S terminal A and body ground
HO2S terminal A and power supply
HO2S terminal B and power supply
Fig 1: Identifying HO2S Connector Terminals
Courtesy of MAZDA MOTORS CORP.