Nissan Frontier D22. Instruction — part 579

DTC P0139, P0159 HO2S2

EC-1419

[VG33ER]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

UBS00DVW

BANK 1

BBWA1079E

EC-1420

[VG33ER]

DTC P0139, P0159 HO2S2

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

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

56

OR

Heated oxygen sensor 2
(bank 1)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm quickly after
the following conditions are met

–

Keeping the engine speed between 3,500 and 4,000
rpm for 1 minute and at idle for 1 minute under no
load

0 - Approximately 1.0V

DTC P0139, P0159 HO2S2

EC-1421

[VG33ER]

C

D

E

F

G

H

I

J

K

L

M

A

EC

BANK 2

BBWA1080E

EC-1422

[VG33ER]

DTC P0139, P0159 HO2S2

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

Diagnostic Procedure

UBS00DVX

1.

RETIGHTEN GROUND SCREWS

1.

Turn ignition switch OFF.

2.

Loosen and retighten engine ground screws.

>> GO TO 2.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

57

Y

Heated oxygen sensor 2
(bank 2)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm quickly after
the following conditions are met

–

Keeping the engine speed between 3,500 and 4,000
rpm for 1 minute and at idle for 1 minute under no
load

0 - Approximately 1.0V

BBIA0418E