Bank 1

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Wiring Diagram - EC-FUELB1-01

Courtesy of NISSAN NORTH AMERICA, INC.

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.

SPECIFICATION DATA AND REFERENCE VALUES CHART

TERMINAL NO.

WIRE COLOR

ITEM

CONDITION

DATA (DC Voltage)

A/F sensor 1 heater (Bank 1)

[Engine is running]

Warm-up condition
Idle speed
(More than 140 seconds after starting engine)

Approximately 2.9 - 8.8V⁽¹⁾

Courtesy of NISSAN NORTH AMERICA, INC.

21
22
23

W
LG
SB

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 NORTH AMERICA, INC.

[Engine is running]

Warm-up condition
Engine speed: 2, 000 rpm

BATTERY VOLTAGE
(11 - 14V)⁽¹⁾

Courtesy of NISSAN NORTH AMERICA, INC.

A/F sensor 1 (Bank 1)

[Engine is running]

Warm-up condition
Engine speed: 2, 000 rpm

Approximately 1.8V
Output voltage varies with air fuel ratio.

A/F sensor 1 (Bank 1)

[Ignition switch: ON]

Approximately 2.2V

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