Section 111 (Vacuum Diagrams): Introduction

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Infiniti QX4, 2003 Infiniti Q45, 2003 Infiniti M45, 2003 Infiniti I35, and 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

This article contains schematics of vacuum hose routing. Use these vacuum diagrams during the visual inspection portion of BASIC DIAGNOSTIC PROCEDURES article. This will assist in identifying improperly routed vacuum hoses, which cause driveability and/or computer-indicated malfunctions.

NOTE: Do not use soapy water or any type of solvent while installing vacuum or purge hoses.

Fig 1: Engine Control System Vacuum Hose Drawing (FX35)

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

Fig 2: Engine Control System - System Diagram (FX35)

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

Fig 3: Engine Control System Vacuum Hose Drawing (FX45)

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

Fig 4: Engine Control System - System Diagram (FX45)

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

Fig 5: Engine Control System Vacuum Hose Drawing (G35)

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

Fig 6: Engine Control System - System Diagram (G35)

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

Fig 7: Engine Control System Vacuum Hose Drawing (I35)

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

Fig 8: Engine Control System - System Diagram (I35)

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

Fig 9: Engine Control System Vacuum Hose Drawing (M45)

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

Fig 10: Engine Control System - System Diagram (M45)

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

Fig 11: Engine Control System Vacuum Hose Drawing (QX4)

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

Fig 12: Engine Control System - System Diagram (QX4)

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

Fig 13: Engine Control System Vacuum Hose Drawing (Q45)

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

Fig 14: Engine Control System - System Diagram (Q45)

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