Ignition Signal: Wiring Diagram

For PG-POWER, refer to POWER SUPPLY, GROUND & CIRCUIT ELEMENTS .

Fig 1: Wiring Diagram - EC-IGNSYS-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.

ITEM CONDITION CHART

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
111	G/W	ECM relay (Self shut-off)	[Engine is running] [Ignition switch: OFF] A few seconds after turning ignition switch OFF	0 - 1.0V
111	G/W	ECM relay (Self shut-off)	[Ignition switch: OFF] More than a few seconds after turning ignition switch OFF	BATTERY VOLTAGE (11 - 14V)
119 120	SB GY	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)
121	W/L	Power supply for ECM (Back-up)	[Ignition switch: OFF]	BATTERY VOLTAGE (11 - 14V)

Fig 2: Wiring Diagram - EC-IGNSYS-02

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

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 ECM's transistor. Use a ground other than ECM terminals, such as the ground.

ITEM CONDITION CHART

TERMINAL NO.

WIRE COLOR

ITEM

CONDITION

DATA (DC Voltage)

61
62
80
81

L/R
BR
GY/R
PU

Ignition signal No. 3
Ignition signal No. 1
Ignition signal No. 4
Ignition signal No. 2

[Engine is running]

Warm-up condition
Idle speed

NOTE: The pulse cycle changes depending on rpm at idle.

0 - 0.1V⁽¹⁾

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

[Engine is running]

Warm-up condition
Engine speed is 2, 000 rpm.

0 - 0.2V⁽¹⁾

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

⁽¹⁾	Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)