Nissan Frontier D22. Manual — part 425

DTC P0138, P0158 HO2S2

EC-803

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

UBS00DIF

BANK 1

BBWA1079E

EC-804

[VG33E]

DTC P0138, P0158 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.

TERMI-

NAL

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 P0138, P0158 HO2S2

EC-805

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

BANK 2

BBWA1080E

EC-806

[VG33E]

DTC P0138, P0158 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

UBS00DIG

1.

INSPECTION START

1.

Turn ignition switch OFF.

2.

Loosen and retighten engine ground screws.

3.

Check heated oxygen sensor 2 harness protector color.

4.

Disconnect corresponding heated oxygen sensor 2 harness
connector.

5.

Disconnect ECM harness connector.

>> 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

PBIB1423E