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Home >> Nissan-Datsun >> 2004 >> Altima SE, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System - 3.5L >> DTC P1144, P1164: 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 91 [HO2S1 (B1) signal] 92 [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 below 0.8V at least one time.
    • The minimum voltage is below 0.35V at least one time.
  4. If NG, go to "DIAGNOSTIC PROCEDURE ".
    Fig 1: Checking Voltage Between Terminal 91, 92 And Ground
    G02885755Courtesy of NISSAN MOTOR CO., U.S.A.
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