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Mazda
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2004
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3 s, 4D Hatchback, Automatic
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Repair and Diagnosis
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Engine Performance
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Engine Control System
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Rear Heated Oxygen Sensor (Ho2S) 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 GND
HO2S terminal A and power supply
HO2S terminal B and power supply
Fig 1: Identifying Rear HO2S Connector Terminals
Courtesy of MAZDA MOTORS CORP.