Diagnostic Procedure (2.5L)

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For injector circuit, see FUEL CONTROL in SYSTEM & COMPONENT TESTING article, for ignition signal, see IGNITION SIGNAL CIRCUITS in SYSTEM & COMPONENT TESTING article, for fuel pressure release, see FUEL SYSTEM PRESSURE RELEASE in SYSTEM & COMPONENT TESTING article, for basic inspection, see BASIC INSPECTION under IDLE SPEED, IGNITION TIMING & IDLE MIXTURE RATIO ADJUSTMENT in ON-VEHICLE ADJUSTMENTS article, for component inspection of heated oxygen sensor 1, see COMPONENT INSPECTION (2.5L) , for Trouble Shooting - No Codes, see TROUBLE SHOOTING - NO CODES article and for erasing 1st trip DTC's, see CLEARING DIAGNOSTIC TROUBLE CODES and for intermittents, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.

For diagnostic procedure, see Fig 1 - Fig 4 .

Fig 1: Identifying Diagnostic Procedure For DTC P0300-P0304: Cylinder Or Multiple Cylinder Misfire (Steps 1-2 Of 14 - 2.5L)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying Diagnostic Procedure For DTC P0300-P0304: Cylinder Or Multiple Cylinder Misfire (Steps 3-4 Of 14 - 2.5L)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Identifying Diagnostic Procedure For DTC P0300-P0304: Cylinder Or Multiple Cylinder Misfire (Steps 5-8 Of 14 - 2.5L)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Identifying Diagnostic Procedure For DTC P0300-P0304: Cylinder Or Multiple Cylinder Misfire (Steps 9-14 Of 14 - 2.5L)

Courtesy of NISSAN MOTOR CO., U.S.A.