Nissan Frontier D22. Manual — part 427

DTC P0139, P0159 HO2S2

EC-811

[VG33E]

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EC

3.

Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

4.

Let engine idle for 1 minute.

5.

Select “HO2S2 (B1) P0139” or “HO2S2 (B2) P0159” of “HO2S2” in “DTC WORK SUPPORT” mode with
CONSULT-II and follow the instruction of CONSULT-II.

6.

Start engine and following the instruction of CONSULT-II.

7.

Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”.
If “NG” is displayed, refer to

EC-815, "Diagnostic Procedure"

.

If “CAN NOT BE DIAGNOSED” is displayed, perform the following.

a.

Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).

b.

Turn ignition switch ON and select “COOLAN TEMP/S” in “DATA
MONITOR” mode with CONSULT-II.

c.

Start engine and warm it up while monitoring “COOLAN TEMP/
S” indication on CONSULT-II.

d.

When “COOLAN TEMP/S” indication reaches to 70

°C (158°F),

go to step 3.

Overall Function Check

UBS00DIM

Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a
DTC might not be confirmed.

CAUTION:

Always drive vehicle at a safe speed.

WITH GST

1.

Start engine and warm it up to the normal operating temperature.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

4.

Let engine idle for 1 minute.

5.

Set voltmeter probes between ECM terminal 56 [HO2S2(B1)
signal] or 57 [HO2S2(B2) signal] and ground.

6.

Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should change at more than 0.06V for 1 second
during this procedure.
If the voltage can be confirmed in step 6, step 7 is not nec-
essary.

7.

Keep vehicle at idling for 10 minutes, then check the voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in D
position with “OD” OFF (A/T), 3rd gear position (M/T).
The voltage should change at more than 0.06V for 1 second during this procedure.

8.

If NG, go to

EC-815, "Diagnostic Procedure"

.

PBIB0115E

SEF174Y

SEF922UA

EC-812

[VG33E]

DTC P0139, P0159 HO2S2

Wiring Diagram

UBS00DIN

BANK 1

BBWA1079E

DTC P0139, P0159 HO2S2

EC-813

[VG33E]

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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-814

[VG33E]

DTC P0139, P0159 HO2S2

BANK 2

BBWA1080E