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HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEMSSFI SYSTEMHEATED OXYGEN SENSORINSPECTION
2004 Toyota Celica GT, Standard

Heated Oxygen Sensor: Inspection

2004 Toyota Celica GT, StandardSECTION Inspection
  1. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR (BANK 1 SENSOR 1) 
    1. Disconnect the oxygen sensor connector.
    2. Using an ohmmeter, measure the resistance between the terminals +B and HT.
      Fig 1: Measuring Resistance Between Terminals +B & HT Using An Ohmmeter
      G00945265Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Resistance: 

      • 1ZZ-FE: 5-10 Ω at 20°C (68°F) 
      • 2ZZ-GE: 11-16 Ω at 20°C (68°F) 

      If the resistance is not as specified, replace the sensor.

      • Torque: 44 N.m (450 kgf.cm, 31 ft.lbf) 
    3. Reconnect the oxygen sensor connector.
  2. INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSOR (BANK 1, SENSOR 2) 
    1. Remove the passenger's seat.
    2. Take out the floor carpet.
    3. Disconnect the oxygen sensor connector.
    4. Using an ohmmeter, measure the resistance between the terminals +B and HT.
      Fig 2: Measuring Resistance Between Terminals +B & HT Using An Ohmmeter
      G00945266Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Resistance: 11-16 Ω at 20°C (68°F) 

      If the resistance is not as specified, replace the sensor.

      • Torque: 44 N.m (450 kgf.cm, 31 ft.lbf) 
    5. Reconnect the oxygen sensor connector.
    6. Resistance the floor carpet.
    7. Reinstall the passenger's seat.
RENDER: 1.0x

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