Power Supply And Ground Circuit: Wiring Diagram

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Power Supply Circuit - EC-MAIN-01

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

Specification data are reference values and are measured between each terminal and ground.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Fig 2: Specification Data & Reference Values

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

Fig 3: Ground Circuit

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

Specification data are reference values and are measured between each terminal and ground.

CAUTION: Do not use ECM ground terminals when measuring Input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Fig 4: Specification Data & Reference Values

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