Power Supply And Ground Circuit: Wiring Diagram

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Wiring Diagram - 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: Terminal Specification Table

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

Fig 3: Wiring Diagram - EC-MAIN-02

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.

TERMINAL SPECIFICATION

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
1	B	ECM ground	[Engine is running]	Body ground
1	B	ECM ground	Idle speed	Body ground
115	B/R	ECM ground	[Engine is running]	Body ground
116	B	ECM ground	Idle speed	Body ground