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Roadster Models

Fig 1: Wiring Diagram - Roadster Models - EC-PRE/SE-02
G02401676Courtesy 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 Reference Chart
G02401677Courtesy of NISSAN MOTOR CO., U.S.A.