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Overall Function Check

WARNING: This page is about a different car, the 2004 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.

Use this procedure to check the overall function of the heated oxygen sensor 1 circuit. During this check, a DTC might not be confirmed.

WITH GST 

  1. Start engine and warm it up to normal operating temperature.
  2. Set voltmeter probes between ECM terminal 50 [Heated oxygen sensor 1 signal] and engine ground.
  3. Check the following with engine speed held at 2,000 RPM constant under no load.
    • The voltage does not remain in the range of 0.2 to 0.4V.
  4. If NG, go to DIAGNOSTIC PROCEDURE .
Fig 1: Setting Voltmeter Probes Between ECM Terminal And Engine Ground
G00854425Courtesy of NISSAN MOTOR CO., U.S.A.
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