Nissan Frontier D22. Instruction — part 483

DTC P1147, P1167 HO2S2

EC-1035

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

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

EC-1036

[VG33E]

DTC P1147, P1167 HO2S2

BANK 2

BBWA1080E

DTC P1147, P1167 HO2S2

EC-1037

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

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

UBS00DNR

1.

RETIGHTEN GROUND SCREWS

1.

Turn ignition switch OFF.

2.

Loosen and retighten engine ground screws.

>> GO TO 2.

TERMI-

NAL

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

EC-1038

[VG33E]

DTC P1147, P1167 HO2S2

2.

CLEAR THE SELF-LEARNING DATA

With CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II.

3.

Clear the self-learning control coefficient by touching “CLEAR”.

4.

Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0174 detected?
Is it difficult to start engine?

Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF.

3.

Disconnect mass air flow sensor harness connector, and restart and run engine for at least 5 seconds at
idle speed.

4.

Stop engine and reconnect mass air flow sensor harness connector.

5.

Make sure DTC P0102 is displayed.

6.

Erase the DTC memory. Refer to

EC-632, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC

INFORMATION"

.

7.

Make sure DTC P0000 is displayed.

8.

Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0174 detected?
Is it difficult to start engine?

Yes or No

Yes

>> Perform trouble diagnosis for DTC P0171, P0174. Refer to

EC-820

.

No

>> GO TO 3.

3.

CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Check harness continuity between HO2S2 terminal 4 and engine ground.
Refer to Wiring Diagram.

2.

Also check harness for short to power.

OK or NG

OK >> GO

TO

5.

NG

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check Harness for open between heated oxygen sensor 2 and engine ground.

>> Repair open circuit or short to power in harness or connectors.

SEF968Y

Continuity should exist.