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Home >> Mazda >> 2004 >> 6 s, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (AJ) >> Heated Oxygen Sensor (Ho2S) Heater Inspection >> Resistance Inspection >> Notes

Resistance Inspection: Notes

  1. Disconnect the negative battery cable.
  2. Disconnect the HO2S connector.
  3. Measure the resistance between the HO2S terminals C and D using an ohmmeter.
    • If the HO2S heater is okay, but the PID value is out of specification, perform the "Circuit Open/Short Inspection".
    • If not as specified, replace the HO2S. (See EXHAUST SYSTEM REMOVAL/INSTALLATION .)
    Fig 1: HO2S Connector Terminal Identification (All Connectors)
    G01026789Courtesy of MAZDA MOTORS CORP.