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Home >> Kia >> 2018 >> Soul Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System Diagnosis - 1.6L (1 Of 3) >> DTC P0133: O2 Sensor Circuit Slow Response (Bank 1/Sensor 1) >> Wiring Inspection >> Signal Circuit Inspection
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Signal Circuit Inspection

  1. Ignition "OFF" and disconnect HO2S upstream (S1) connector.
  2. Ignition "ON".
  3. Measure voltage between Pin No. 2 (Nernst Voltage) terminal of HO2S (S1) harness connector and chassis ground.

    Measure voltage between Pin No. 1 (Virtual Ground) terminal of HO2S (S1) harness connector and chassis ground.

    Measure voltage between Pin No. 3 (Pumping Current) terminal of HO2S (S1) harness connector and chassis ground.

    Measure voltage between Pin No. 6 (Trim Resistor) terminal of HO2S (S1) harness connector and chassis ground.

    Specification: 

    Nernst Voltage: Approx 2.4V

    Virtual Ground Output: Approx 2.6V

    Pumping Current: Approx 2.4V

    Trim Resistor: Approx 2.4V

  4. Is the measured voltage within specification?

    YES 

    NO