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ECM Inspection Table

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

Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by CONSULT-II.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.

Fig 1: ECM Inspection Table (1 Of 5)

G03601428

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

Fig 2: ECM Inspection Table (2 Of 5)

G03601429

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

Fig 3: ECM Inspection Table (3 Of 5)

G03601430

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

Fig 4: ECM Inspection Table (4 Of 5)

G03601431

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

Fig 5: ECM Inspection Table (5 Of 5)

G03601432

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

ECM INSPECTION CHART

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
70	B/W	Refrigerant pressure sensor	[Engine is running] Warm-up condition Both A/C switch and blower switch: ON (Compressor: Operates.)	1.0 - 4.0V
73	Y/B	Engine coolant temperature sensor	[Engine is running]	Approximately 0 - 4.8V Output voltage varies with engine coolant temperature.
74	L	Heated oxygen sensor 2 (bank 2)	[Engine is running] Warm-up condition Revving engine from idle to 3, 000 RPM quickly after the following conditions are met. After keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load	0 - Approximately 1.0V
78	B/W	Sensor ground (Heated oxygen sensor 2)	[Engine is running] Warm-up condition Idle speed	Approximately 0V
82	B/R	Sensor ground (APP sensor 1)	[Engine is running] Warm-up condition Idle speed	Approximately 0V
83	G/W	Sensor ground (APP sensor 2)	[Engine is running] Warm-up condition Idle speed	Approximately 0V
85	G/W	Data link connector	[Ignition switch: ON] CONSULT-II or GST: Disconnected	Approximately 5V - Battery voltage (11 - 14V)
86	P	CAN communication line	[Ignition switch: ON]	Approximately 1.1 - 2.3V Output voltage varies with the communication status
90	L	Sensor power supply (APP sensor 1)	[Ignition switch: ON]	Approximately 5V
91	W/R	Sensor power supply (APP sensor 2)	[Ignition switch: ON]	Approximately 5V
94	L	CAN communication line	[Ignition switch: ON]	Approximately 2.6 - 3.2V Output voltage varies with the communication status.
98	G/R	Accelerator pedal position sensor 2	[Ignition switch: ON] Engine: Stopped Accelerator pedal: Fully released	0.25 - 0.50V
98	G/R	Accelerator pedal position sensor 2	[Ignition switch: ON] Engine: Stopped Accelerator pedal: Fully depressed	2.0 - 2.5V
99	G/Y	ASCD steering switch	[Ignition switch: ON] ASCD steering switch: OFF	Approximately 4V
			[Ignition switch: ON] MAIN switch: Pressed	Approximately 0V
			[Ignition switch: ON] CANCEL switch: Pressed	Approximately 1V
			[Ignition switch: ON] RESUME/ACCELERATE switch: Pressed	Approximately 3V
			[Ignition switch: ON] SET/COAST switch: Pressed	Approximately 2V
101	R/W	Stop lamp switch	[Ignition switch: OFF] Brake pedal: Fully released	Approximately 0V
101	R/W	Stop lamp switch	[Ignition switch: OFF] Brake pedal: Slightly depressed	BATTERY VOLTAGE (11 - 14V)
102	GR/R	PNP switch	[Ignition switch: ON] Selector lever: P or N	Approximately 0V
102	GR/R	PNP switch	[Ignition switch: ON] Except the above gear position	BATTERY VOLTAGE (11 - 14V)
104	O	Throttle control motor relay	[Ignition switch: OFF]	BATTERY VOLTAGE (11 - 14V)
104	O	Throttle control motor relay	[Ignition switch: ON]	0 - 1.0V
106	BR/W	Accelerator pedal position sensor 1	[Ignition switch: ON] Engine: Stopped Accelerator pedal: Fully released	0.5 - 1.0V
106	BR/W	Accelerator pedal position sensor 1	[Ignition switch: ON] Engine: Stopped Accelerator pedal: Fully depressed	4.2 - 4.8V
107	V/R	Fuel tank temperature sensor	[Engine is running]	Approximately 0 - 4.8V Output voltage varies with fuel tank temperature.
108	BR/W	ASCD brake switch	[Ignition switch: ON] Brake pedal: Slightly depressed	Approximately 0V
108	BR/W	ASCD brake switch	[Ignition switch: ON] Brake pedal: Fully released	BATTERY VOLTAGE (11 - 14V)
109	L/W	Ignition switch	[Ignition switch: OFF]	0V
109	L/W	Ignition switch	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)
111	W/B	ECM relay (Self shut-off)	[Engine is running] [Ignition switch: OFF] For a few seconds after turning ignition switch OFF	0 - 1.5V
111	W/B	ECM relay (Self shut-off)	[Ignition switch: OFF] More than a few seconds after turning ignition switch OFF	BATTERY VOLTAGE (11 - 14V)
113	GR	Fuel pump relay	[Ignition switch: ON] For 1 second after turning ignition switch ON [Engine is running]	0 - 1.5V
113	GR	Fuel pump relay	[Ignition switch: ON] More than 1 second after turning ignition switch ON	BATTERY VOLTAGE (11 - 14V)
115 116	B B/W	ECM ground	[Engine is running] Idle speed	Body ground
117	L/Y	EVAP canister vent control valve	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)
119 120	BR BR	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)
121	W	Power supply for ECM (Backup)	[Ignition switch: OFF]	BATTERY VOLTAGE (11 - 14V)

*: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)