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Home >> Kia >> 2016 >> K900 V6 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 3.8L (1 Of 3) >> DTC P0140: O2 Sensor Circuit No Activity Detected (Bank 1 / Sensor 2) >> Wiring Inspection >> Signal Circuit Inspection

Signal Circuit Inspection

  1. IG "OFF" and disconnect HO2S (B1S2) connector.
  2. IG "ON".
  3. Measure voltage between Pin No. 1 (high) terminal of HO2S (B1S2) harness connector and chassis ground.

    Measure voltage between Pin No. 2 (low) terminal of HO2S (B1S2) harness connector and chassis ground.

    Specification:  0.5 (high) & 0V (low)

  4. IG "OFF" & Disconnect ECM connector.
  5. Measure resistance between Pin No. 1 (high) terminal of HO2S (B1S2) harness connector and chassis ground.

    Measure resistance between Pin No. 2 (low) terminal of HO2S (B1S2) harness connector and chassis ground.

    Specification:  ∞

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  6. Is the measured Value within specification?

    YES 

    NO 

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