Infiniti Q45. Manual — part 407

DTC P0133, P0153 A/F SENSOR 1

EC-267

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

NBS002XO

BANK 1

TBWM1224E

EC-268

DTC P0133, P0153 A/F SENSOR 1

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 dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

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

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

2

OR

A/F sensor 1 heater
(bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

16

W

A/F sensor 1 (bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 3.1V

35

R

Approximately 2.6V

56

R/L

Approximately 2.3V

75

BR

Approximately 2.3V

PBIB1584E

DTC P0133, P0153 A/F SENSOR 1

EC-269

C

D

E

F

G

H

I

J

K

L

M

A

EC

BANK 2

TBWM1225E

EC-270

DTC P0133, P0153 A/F SENSOR 1

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 dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

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

Diagnostic Procedure

NBS002XP

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten three ground screws on the body.
Refer to

EC-154, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

24

SB

A/F sensor 1 heater
(bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

57

G/Y

A/F sensor 1 (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 2.6V

58

G

Approximately 2.3V

76

L/W

Approximately 3.1V

77

GY

Approximately 2.3V

PBIB1584E

PBIB2417E