Power Supply And Ground Circuit: Wiring Diagram

Fig 1: Power Supply Circuit - 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: ECM Connector Terminals Voltage Specification Chart (EC-MAIN-01)

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

Fig 3: Power Supply Circuit - 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.

VOLTAGE SPECIFICATION

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