DTC P0400 EGR Function: Wiring Diagram

NOTE: For references to PG-Power, see POWER SUPPLY, GROUND & CIRCUIT ELEMENTS - QUEST .

Fig 1: EGR Temperature Sensor - Wiring Diagram

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.

TERMINALS VOLTAGE REFERENCE

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
17 18 19 20	P/B G L L/W	EGR volume control valve	[Engine is running] Idle speed	0.1 - 14 V
54	P/L	EGR temperature sensor	[Ignition switch: ON]	Less than 4.5 V
54	P/L	EGR temperature sensor	[Engine is running] Warm-up condition EGR system: Operating	0 - 1.5 V
67	B	Sensor ground	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
111	W/B	ECM relay (Self shut-off)	[Engine is running] [Ignition switch: OFF] For a few seconds after turning ignition switch OFF	0 - 1.5 V
111	W/B	ECM relay (Self shut-off)	[Ignition switch: OFF] More than a few seconds after turning ignition switch OFF	BATTERY VOLTAGE (11 - 14 V)
119 120	R/G R/G	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14 V)