Nissan Frontier D22. Manual - part 275

 

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Nissan Frontier D22. Manual - part 275

 

 

DTC P0134 HO2S1

EC-203

[KA24DE]

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EC

DTC Confirmation Procedure

UBS00D4D

CAUTION:

Always drive vehicle at a safe speed.

NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and wait at
least 5 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

 WITH CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Select “HO2S1 (B1) P0134” of “HO2S1” in “DTC WORK SUPPORT” mode with CONSULT-II.

3.

Touch “START”.

4.

Let it idle for at least 3 minutes.

NOTE:
Never raise engine speed above 3,600 rpm after this step. If
the engine speed limit is exceeded, return to step 4.

5.

When the following conditions are met, “TESTING” will be dis-
played on the CONSULT-II screen. Maintain the conditions con-
tinuously until “TESTING” changes to “COMPLETED”. (It will
take approximately 10 to 60 seconds.)

If “TESTING” is not displayed after 5 minutes, retry from
step 2.

6.

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

EC-206, "Diagnostic

Procedure"

 .

During this test, P1148 may be displayed on CONSULT-II
screen.

Overall Function Check

UBS00D4E

Use this procedure to check the overall function of the heated oxygen sensor 1 circuit. During this check, a
DTC might not be confirmed.

LEC032A

ENG SPEED

1,400 - 4,000 rpm 

Vehicle speed

More than 64 km/h (40 MPH)

B/FUEL SCHDL

3.5 - 17 msec

Selector lever

Suitable position

LEC033A

LEC034A

EC-204

[KA24DE]

DTC P0134 HO2S1

 WITH GST

1.

Start engine and warm it up to normal operating temperature.

2.

 Set voltmeter probes between ECM terminal 50 [Heated oxy-
gen sensor 1 signal] and engine ground.

3.

Check the following with engine speed held at 2,000 rpm con-
stant under no load.

The voltage does not remain in the range of 0.2 to 0.4V.

4.

If NG, go to 

EC-206, "Diagnostic Procedure"

 .

AEC873A

DTC P0134 HO2S1

EC-205

[KA24DE]

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Wiring Diagram

UBS00D4F

BBWA0440E

EC-206

[KA24DE]

DTC P0134 HO2S1

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 ECM terminals, such as the ground.

Diagnostic Procedure

UBS00D4G

1. 

INSPECTION START

1.

Turn ignition switch OFF.

2.

Loosen and retighten engine ground screws.

3.

Disconnect heated oxygen sensor 1 harness connector.

>> GO TO 2.

2. 

CHECK INPUT SIGNAL CIRCUIT

1.

Disconnect ECM harness connector.

2.

Check harness continuity between ECM terminal 50 and HO2S1 terminal 2.
Refer to Wiring Diagram.

3.

Check harness continuity between ECM terminal 50 or HO2S1 terminal 2 and ground.
Refer to Wiring Diagram.

4.

Also check harness for short to power. 

OK or NG

OK

>> GO TO 3.

NG

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

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

50

B

Heated oxygen sensor 1

[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm

0 - Approximately 1.0V
(Periodically change)

BBIA0431E

BBIA0430E

Continuity should exist.

Continuity should not exist.

 

 

 

 

 

 

 

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