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Home › Infiniti › 2005 › FX45 › Repair and Diagnosis › Engine Performance › Engine Control System - VK45DE › DTC P1143, P1163: Ho2S1 › Overall Function Check › With GST

With GST

  1. Start engine and warm it up to normal operating temperature.
  2. Set voltmeter probes between ECM terminal 16 [HO2S1(B1) signal] or 35 [HO2S1(B2) signal] and ground.
  3. Check one of the following with engine speed held at 2,000 RPM constant under no load.
    • The maximum voltage is over 0.6V at least 1 time.
    • The minimum voltage is over 0.1V at least 1 time.
  4. If NG, go to "DIAGNOSTIC PROCEDURE  ".
    Fig 1: Setting Voltmeter Probes Between ECM Terminal 16 [Ho2S1(B1) Signal] And Ground
    G02361953Courtesy of NISSAN MOTOR CO., U.S.A.
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