Ignition Signal: Wiring Diagram

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

Fig 1: EC-IGNSYS-01 - Wiring Diagram

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)
24	BR/Y	ECM relay (Self shut-off)	[Engine is running] [Ignition switch: OFF] For a few seconds after turning ignition switch OFF	0 - 1.5V
24	BR/Y	ECM relay (Self shut-off)	[Ignition switch: OFF] More than a few seconds after turning ignition switch OFF	BATTERY VOLTAGE (11 - 14V)
125	R	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)

Fig 2: EC-IGNSYS-02 - Wiring Diagram

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-III.

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)

12
15
20

LG/R
PU
Y/B

Ignition signal No. 3
Ignition signal No. 5
Ignition signal No. 1

[Engine is running]

Warm-up condition
Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.

0 - 0.2V⁽¹⁾

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

[Engine is running]

Warm-up condition
Engine speed: 2, 000 RPM

0.1 - 0.4V⁽¹⁾

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

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

Fig 3: EC-IGNSYS-03 - Wiring Diagram

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-III.

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)

11
16
19

GY
G/B
L/R

Ignition signal No. 4
Ignition signal No. 2
Ignition signal No. 6

[Engine is running]

Warm-up condition
Idle speed
NOTE: The pulse cycle changes depending on RPM at idle.

0 - 0.2V⁽¹⁾

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

[Engine is running]

Warm-up condition
Engine speed: 2, 000 RPM

0.1 - 0.4V⁽¹⁾

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

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