DTC P0171, P0174 Fuel Injection System Function: Wiring Diagram: Bank1

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

Fig 1: EC-FUELB1-01 - 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-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.

TERMINAL SPECIFICATION DATA

TERMINAL NO.

WIRE COLOR

ITEM

CONDITION

DATA (DC Voltage)

G/B

A/F sensor 1 heater (bank 1)

[Engine is running]

Warm-up condition
Idle speed

Approximately 5V⁽¹⁾

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

LG/B

A/F sensor 1 (Bank 1)

[Engine is running]

Warm-up condition
Idle speed

Approximately 3.1V

O/L

Approximately 2.6V

BR/Y

Approximately 2.3V

Y/R

Approximately 2.3V

21
22
23

L/W
R/Y
R/B

Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1

[Engine is running]

Warm-up condition
Idle speed

NOTE: The pulse cycle changes depending on rpm at idle

BATTERY VOLTAGE (11 -14V)⁽¹⁾

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

[Engine is running]

Warm-up condition
Engine speed: 2, 000 rpm

BATTERY VOLTAGE (11 -14V)⁽¹⁾

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

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