Nissan Almera Tino V10 (2001 year). Manual

CLEAR THE SELF-LEARNING DATA

With CONSULT-II

1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARN CONTROL” in “WORK SUPPORT” mode with CONSULT-II.
3. Clear the self-learning control coefficient by touching “START”.

SEF652Y

4. Run engine for at least 10 minutes at idle speed.

Is the 1st trip DTC P0172 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 3 seconds at idle speed.

JEF105Y

4. Stop engine and reconnect mass air flow sensor harness connector.
5. Make sure diagnostic trouble code No. 0100 is displayed in Diagnostic Test Mode II.
6. Erase the diagnostic test mode II (Self-diagnostic results) memory. Refer to “How to Erase Emission-related Diagnostic

Information”, EC-69.

7. Make sure diagnostic trouble code No. 0000 is displayed in Diagnostic Test Mode II.
8. Run engine for at least 10 minutes at idle speed.

Is the 1st trip DTC 0172 detected? Is it difficult to start engine?

Yes or No

Yes

Perform trouble diagnosis for DTC P0172. Refer to EC-277.

GO TO 3.

DTC P0139 HEATED OXYGEN SENSOR 2 (REAR)

(RESPONSE MONITORING)

QG18DE

Diagnostic Procedure (Cont’d)

EC-252

CHECK INPUT SIGNAL CIRCUIT

1. Disconnect heated oxygen sensor 2 (rear) harness connector and ECM harness connector.

SEF639Z

2. Check harness continuity between ECM terminal 63 and heated oxygen sensor 2 (rear) harness connector terminal 1.

Refer to wiring diagram.

Continuity should exist.

3. Check harness continuity between ECM terminal 63 [or heated oxygen sensor 2 (rear) harness connector terminal 1]

and ground.

Continuity should not exist.

4. Also check harness for short to ground and short to power.

OK or NG

GO TO 5.

GO TO 4.

DETECT MALFUNCTIONING PART

Check the harness for open or short between heated oxygen sensor 2 (rear) and ECM.

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

CHECK GROUND CIRCUIT

1. Check harness continuity between heated oxygen sensor 2 (rear) harness connector terminal 4 and engine ground.

Refer to wiring diagram.

Continuity should exist.

2. Also check harness for short to power.

OK or NG

GO TO 6.

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

CHECK HEATED OXYGEN SENSOR 2 (REAR)

Refer to “Component Inspection”, EC-254.

OK or NG

GO TO 7.

Replace heated oxygen sensor 2 (rear).

CHECK INTERMITTENT INCIDENT

Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-145.

INSPECTION END

DTC P0139 HEATED OXYGEN SENSOR 2 (REAR)

(RESPONSE MONITORING)

QG18DE

Diagnostic Procedure (Cont’d)

EC-253

SEF662Y

Component Inspection

NLEC0170

HEATED OXYGEN SENSOR 2 (REAR)

NLEC0170S01

With CONSULT-II

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.

Stop vehicle with engine running.

Select “FUEL INJECTION” in “ACTIVE TEST” mode, and
select “HO2S2 (B1)” as the monitor item with CONSULT-II.

Check “HO2S2 (B1)” at idle speed when adjusting “FUEL
INJECTION” to

25%.

“HO2S2 (B1)” should be above 0.68V at least once when
the “FUEL INJECTION” is +25%.
“HO2S2 (B1)” should be below 0.56V at least once when
the “FUEL INJECTION” is −25%.

CAUTION:

Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.

Before installing new oxygen sensor, clean exhaust sys-
tem threads using Oxygen Sensor Thread Cleaner tool
and approved anti-seize lubricant.

SEF244YA

SEF032X

Without CONSULT-II

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.

Stop vehicle with engine running.

Set voltmeter probes between ECM terminals 63 (HO2S2 sig-
nal) and engine ground.

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 be above 0.68V at least once.
If the voltage is above 0.68V at step 4, step 5 is not nec-
essary.

Check the voltage when revving up to 6,000 rpm under no
load. Or keep vehicle at idling for 10 minutes, then check the
voltage. Or check the voltage when coasting from 80 km/h (50
MPH) in 3rd gear position.
The voltage should be below 0.56V at least once.

CAUTION:

Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.

Before installing new oxygen sensor, clean exhaust sys-
tem threads using Oxygen Sensor Thread Cleaner tool

DTC P0139 HEATED OXYGEN SENSOR 2 (REAR)

(RESPONSE MONITORING)

QG18DE

Component Inspection

EC-254

SEF327R

Component Description

NLEC0171

The heated oxygen sensor 2 (rear), after three way catalyst, moni-
tors the oxygen level in the exhaust gas.
Even if switching characteristics of the heated oxygen sensor 1
(front) are shifted, the air fuel ratio is controlled to stoichiometric,
by the signal from the heated oxygen sensor 2 (rear).
This sensor is made of ceramic zirconia. The zirconia generates
voltage from approximately 1V in richer conditions to 0V in leaner
conditions.
Under normal conditions the heated oxygen sensor 2 (rear) is not
used for engine control operation.

CONSULT-II Reference Value in Data Monitor
Mode

NLEC0172

Specification data are reference values.

MONITOR ITEM

CONDITION

SPECIFICATION

HO2S2 (B1)

Engine: After warming up

Revving engine from idle to 3,000
rpm

0 - 0.3V

←→

Approx. 0.6 - 1.0V

HO2S2 MNTR
(B1)

LEAN

←→

RICH

ECM Terminals and Reference Value

NLEC0173

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.

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

Heated oxygen sensor 2
(rear)

[Engine is running]

After warming up to normal operating tempera-
ture and revving engine from idle to 2,000 rpm

0 - Approximately 1.0V

SEF305U

On Board Diagnosis Logic

NLEC0174

The heated oxygen sensor 2 (rear) has a much longer switching
time between rich and lean than the heated oxygen sensor 1
(front). The oxygen storage capacity before the three way catalyst
causes the longer switching time. To judge the malfunctions of
heated oxygen sensor 2 (rear), ECM monitors whether or not the
voltage is too high during various driving conditions such as fuel-
cut.

DTC No.

Malfunction is detected when ...

Check Items (Possible Cause)

P0140
0140

An excessively high voltage from the sensor is sent to
ECM.

Harness or connectors
(The sensor circuit is open or shorted.)

Heated oxygen sensor 2 (rear)

DTC P0140 HEATED OXYGEN SENSOR 2 (REAR)

(HIGH VOLTAGE)

QG18DE

Component Description

EC-256

SEF189Y

DTC Confirmation Procedure

NLEC0175

NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 9 seconds
before conducting the next test.

With CONSULT-II

Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.

Stop vehicle with engine running.

Let engine idle for 1 minute.

Maintain the following conditions for at least 5 consecutive
minutes.

ENG SPEED

Above 1,500 rpm

Selector lever

Suitable position

If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-260.

SEF032X

Overall Function Check

NLEC0176

Use this procedure to check the overall function of the heated oxy-
gen sensor 2 (rear) circuit. During this check, a 1st trip DTC might
not be confirmed.

Without CONSULT-II

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.

Stop vehicle with engine running.

Set voltmeter probes between ECM terminals 63 (HO2S2 sig-
nal) and engine ground.

Check the voltage after 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 be below 2V during this procedure.

If NG, go to “Diagnostic Procedure”, EC-260.

DTC P0140 HEATED OXYGEN SENSOR 2 (REAR)

(HIGH VOLTAGE)

QG18DE

DTC Confirmation Procedure

EC-257

Diagnostic Procedure

NLEC0178

RETIGHTEN GROUND SCREWS

1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.

JEF104Y

GO TO 2.

CHECK INPUT SIGNAL CIRCUIT

1. Disconnect heated oxygen sensor 2 (rear) harness connector and ECM harness connector.

SEF639Z

2. Check harness continuity between ECM terminal 63 and heated oxygen sensor 2 (rear) harness connector terminal 1.

Refer to wiring diagram.

Continuity should exist.

3. Check harness continuity between ECM terminal 63 [or heated oxygen sensor 2 (rear) harness connector terminal 1]

and ground.

Continuity should not exist.

4. Also check harness for short to ground and short to power.

OK or NG

GO TO 4.

GO TO 3.

DETECT MALFUNCTIONING PART

Check the harness for open or short between heated oxygen sensor 2 (rear) and ECM.

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

DTC P0140 HEATED OXYGEN SENSOR 2 (REAR)

(HIGH VOLTAGE)

QG18DE

Diagnostic Procedure

EC-260

CHECK GROUND CIRCUIT

1. Check harness continuity between heated oxygen sensor 2 (rear) harness connector terminal 4 and engine ground.

Refer to wiring diagram.

Continuity should exist.

2. Also check harness for short to power.

OK or NG

GO TO 5.

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

CHECK HARNESS CONNECTOR

Check heated oxygen sensor 2 (rear) harness connector for water.

Water should not exist.

OK or NG

GO TO 6.

Repair or replace harness connector.

CHECK HEATED OXYGEN SENSOR 2 (REAR)

Refer to “Component Inspection”, EC-261.

OK or NG

GO TO 7.

Replace heated oxygen sensor 2 (rear).

CHECK INTERMITTENT INCIDENT

Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-145.

INSPECTION END

SEF662Y

Component Inspection

NLEC0179

HEATED OXYGEN SENSOR 2 (REAR)

NLEC0179S01

With CONSULT-II

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.

Stop vehicle with engine running.

Select “FUEL INJECTION” in “ACTIVE TEST” mode, and
select “HO2S2 (B1)” as the monitor item with CONSULT-II.

Check “HO2S2 (B1)” at idle speed when adjusting “FUEL
INJECTION” to

25%.

“HO2S2 (B1)” should be above 0.68V at least once when
the “FUEL INJECTION” is +25%.
“HO2S2 (B1)” should be below 0.56V at least once when
the “FUEL INJECTION” is −25%.

CAUTION:

Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.

Before installing new oxygen sensor, clean exhaust sys-
tem threads using Oxygen Sensor Thread Cleaner tool
and approved anti-seize lubricant.

DTC P0140 HEATED OXYGEN SENSOR 2 (REAR)

(HIGH VOLTAGE)

QG18DE

Diagnostic Procedure (Cont’d)

EC-261

SEF244YA

SEF032X

Without CONSULT-II

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.

Stop vehicle with engine running.

Set voltmeter probes between ECM terminals 63 (HO2S2 sig-
nal) and engine ground.

CAUTION:

Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.

Before installing new oxygen sensor, clean exhaust sys-
tem threads using Oxygen Sensor Thread Cleaner tool
and approved anti-seize lubricant.

DTC P0140 HEATED OXYGEN SENSOR 2 (REAR)

(HIGH VOLTAGE)

QG18DE

Component Inspection (Cont’d)

EC-262

Description

NLEC0180

SYSTEM DESCRIPTION

NLEC0180S01

Sensor

Input Signal to ECM

ECM func-

tion

Actuator

Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)

Engine speed

Heated
oxygen
sensor 2
heater
(rear) con-
trol

Heated oxygen sensor 2 heater
(rear)

The ECM performs ON/OFF control of the heated oxygen sensor 2 heater (rear) corresponding to the engine
speed.

OPERATION

NLEC0180S02

Engine condition

Heated oxygen sensor 2 heater (rear)

Engine stopped

OFF

Engine is running.

After driving for 2 minutes at a speed
of 70 km/h (43 MPH) or more

Engine speed above 3,600 rpm

OFF

CONSULT-II Reference Value in Data Monitor
Mode

NLEC0181

Specification data are reference values.

MONITOR ITEM

CONDITION

SPECIFICATION

HO2S2 HTR (B1)

Engine speed

Below 3,600 rpm [After driving for 2 minutes at a
speed of 70 km/h (43 MPH) or more]

Above 3,600 rpm

OFF

Ignition switch ON (Engine stopped)

OFF

ECM Terminals and Reference Value

NLEC0182

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.

TERMI-

NAL NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

W/R

Heated oxygen sensor 2
heater (rear)

[Engine is running]

Engine speed is below 3,600 rpm [After driving
for 2 minutes at a speed of 70 km/h (43 MPH) or
more]

Approximately 0.7V

[Engine is running]

Engine speed is above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch “ON”]

Engine stopped

DTC P0141 HEATED OXYGEN SENSOR 2 HEATER (REAR)

QG18DE

Description

EC-263

On Board Diagnosis Logic

NLEC0183

DTC No.

Malfunction is detected when ...

Check Items (Possible Cause)

P0141
0141

The current amperage in the heated oxygen sensor 2
heater (rear) circuit is out of the normal range.
[An improper voltage drop signal is sent to ECM through
the heated oxygen sensor 2 heater (rear).]

Harness or connectors
(The heated oxygen sensor 2 heater (rear) cir-
cuit is open or shorted.)

Heated oxygen sensor 2 heater (rear)

DTC Confirmation Procedure

NLEC0184

NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 9 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is in between 10.5V and 16V at idle.

SEF175Y

With CONSULT-II

Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes. Engine speed must be
maintained at speeds of 3,600 rpm or less during vehicle
operations.

If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-267.

With GST

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes. Engine speed must be
maintained at speeds of 3,600 rpm or less during vehicle
operations.

Turn ignition switch “OFF” and wait at least 9 seconds.

Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.

Select “MODE 3” with GST.

If DTC is detected, go to “Diagnostic Procedure”, EC-267.

When using GST, “DTC Confirmation Procedure” should be
performed twice as much as when using CONSULT-II because
GST cannot display MODE 7 (1st trip DTC) concerning this
diagnosis. Therefore, using CONSULT-II is recommended.

DTC P0141 HEATED OXYGEN SENSOR 2 HEATER (REAR)

QG18DE

On Board Diagnosis Logic

EC-264

Nissan Almera Tino V10 (2001 year). Manual - part 43