LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2004 >> Altima SE, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control System - 3.5L >> DTC P1148, P1168: Closed Loop Control >> Overall Function Check >> With GST
April 5, 2026: LEMON Manuals is launched! Read the announcement.

With GST

  1. Start engine and warm it up to normal operating temperature.
  2. Set voltmeter probes between ECM terminal 91 [HO2S1 (B1) signal] or 92 [HO2S1 (B2) signal] and ground.
  3. Check the following with engine speed held at 2, 000 RPM constant under no-load.
    • The voltage should go above 0.70V at least once.
    • The voltage should go below 0.21 V at least once.
  4. If NG, go to "DIAGNOSTIC PROCEDURE ".
    Fig 1: Checking Voltage Between Terminal 91 Or 92 And Ground
    G02885810Courtesy of NISSAN MOTOR CO., U.S.A.
scientia non olet · About LEMON Manuals