DTC P0643 Sensor Power Supply: Wiring Diagram

Fig 1: Wiring Diagram - EC-SEN/PW-01

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

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

CAUTION: Never 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.

CONNECTOR TERMINALS REFERENCE CHART

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
48	BR	Sensor power supply (EVAP control system pressure sensor)	[Ignition switch: ON]	Approximately 5 V
49	B/Y	Sensor power supply (Refrigerant pressure sensor, Battery current sensor)	[Ignition switch: ON]	Approximately 5 V
68	L/Y	Sensor power supply (Power steering pressure sensor)	[Ignition switch: ON]	Approximately 5 V
82	W	Sensor ground (APP sensor 1)	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
83	P	Sensor ground (APP sensor 2)	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
90	L	Sensor power supply (APP sensor 1)	[Ignition switch: ON]	Approximately 5 V
91	BR	Sensor power supply (APP sensor 2)	[Ignition switch: ON]	Approximately 5 V
98	R	Accelerator pedal position sensor 2	[Ignition switch: ON] Engine stopped Accelerator pedal: Fully released	0.20 - 0.55 V
98	R	Accelerator pedal position sensor 2	[Ignition switch: ON] Engine: Stopped Accelerator pedal: Fully depressed	1.85 - 2.40 V
106	LG	Accelerator pedal position sensor 1	[Ignition switch: ON] Engine: Stopped Accelerator pedal: Fully released	0.4 - 1.1 V
106	LG	Accelerator pedal position sensor 1	[Ignition switch: ON] Engine: Stopped Accelerator pedal: Fully depressed	3.7 - 4.8 V