Almera Tino V10 (2003 year). Manual

DTC P1143 HO2S1 (M/T MODELS)

EC-411

[QG (WITH EURO-OBD)]

Overall Function Check

EBS00QPR

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

WITH GST

Start engine and warm it up to normal operating temperature.

Set voltmeter probes between ECM terminal 35 (HO2S1 signal) and engine ground.

Check one of the following with engine speed held at 2,000 rpm
constant under no load.

–

The maximum voltage is over 0.6V at least one time.

–

The minimum voltage is over 0.1V at least one time.

If NG, go to

EC-411, "Diagnostic Procedure"

Diagnostic Procedure

EBS00QPS

RETIGHTEN GROUND SCREWS

Turn ignition switch “OFF”.

Loosen and retighten engine ground screws.

>> GO TO 2.

RETIGHTEN HEATED OXYGEN SENSOR 1

Loosen and retighten heated oxygen sensor 1.

>> GO TO 3.

MBIB0018E

MBIB0095E

Tightening torque: 40 - 60 N·m (4.1 - 6.2 kg-m, 30 - 44 ft-lb)

MBIB0098E

EC-412

[QG (WITH EURO-OBD)]

DTC P1143 HO2S1 (M/T MODELS)

CLEAR THE SELF-LEARNING DATA

With CONSULT-II

Start engine and warm it up to normal operating temperature.

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

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

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

Without CONSULT-II

Start engine and warm it up to normal operating temperature.

Turn ignition switch “OFF”.

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

Stop engine and reconnect mass air flow sensor harness con-
nector.

Make sure that DTC P0102 is displayed.

Erase the DTC memory. Refer to

EC-68, "HOW TO ERASE

Make sure that DTC P0000 is displayed.

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

Yes or No

Yes

>> Perform trouble diagnosis for DTC P0171. Refer to

EC-281

>> GO TO 4.

CHECK HEATED OXYGEN SENSOR 1 HEATER

Refer to

EC-156, "Component Inspection"

OK or NG

>> GO TO 5.

>> Replace heated oxygen sensor 1.

CHECK HEATED OXYGEN SENSOR 1

Refer to

EC-413, "Component Inspection"

OK or NG

>> GO TO 6.

>> Replace heated oxygen sensor 1.

CHECK INTERMITTENT INCIDENT

Refer to

EC-138, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

For circuit, refer to

EC-195, "Wiring Diagram"

>> INSPECTION END

SEF215Z

MBIB0096E

DTC P1143 HO2S1 (M/T MODELS)

EC-413

[QG (WITH EURO-OBD)]

Component Inspection

EBS00QPT

HEATED OXYGEN SENSOR 1

With CONSULT-II

Start engine and warm it up to normal operating temperature.

Select “MANU TRIG” and adjust “TRIGGER POINT” to 100% in “DATA MONITOR” mode with CONSULT-
II.

Select “HO2S1 (B1)” and “HO2S1 MNTR (B1)”.

Hold engine speed at 2,000 rpm under no load during the follow-
ing steps.

Touch “RECORD” on CONSULT-II screen.

Check the following.

●

“HO2S1 MNTR (B1)” in “DATA MONITOR” mode changes
from “RICH” to “LEAN” to “RICH” more than 5 times in 10 sec-
onds.
5 times (cycles) are counted as shown at right.

●

“HO2S1 (B1)” voltage goes above 0.6V at least once.

●

“HO2S1 (B1)” voltage goes below 0.3V at least once.

●

“HO2S1 (B1)” voltage never exceeds 1.0V.

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 system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

SEF646Y

SEF217YA

SEF648Y

EC-414

[QG (WITH EURO-OBD)]

DTC P1143 HO2S1 (M/T MODELS)

Without CONSULT-II

Start engine and warm it up to normal operating temperature.

Set voltmeter probes between ECM terminal 35 (HO2S1 signal) and engine ground.

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

●

The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V
more than 5 times within 10 seconds.

●

The maximum voltage is over 0.6V at least one time.

●

The minimum voltage is below 0.3V at least one time.

●

The voltage never exceeds 1.0V.

1 time: 0 - 0.3V

→

0.6 - 1.0V

→

0 - 0.3V

2 times: 0 - 0.3V

→

0.6 - 1.0V

→

0 - 0.3V

→

0.6 - 1.0V

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 system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

Removal and Installation

EBS00QPU

HEATED OXYGEN SENSOR 1

Refer to

EM-21, "EXHAUST MANIFOLD AND CATALYTIC CONVERTER"

MBIB0018E

DTC P1143, P1163 HO2S1 (A/T MODELS)

EC-415

[QG (WITH EURO-OBD)]

DTC P1143, P1163 HO2S1 (A/T MODELS)

PFP:22690

Component Description

EBS00QPV

The heated oxygen sensor 1 is placed into the exhaust manifold. It
detects the amount of oxygen in the exhaust gas compared to the
outside air. The heated oxygen sensor 1 has a closed-end tube
made of ceramic zirconia. The zirconia generates voltage from
approximately 1V in richer conditions to 0V in leaner conditions. The
heated oxygen sensor 1 signal is sent to the ECM. The ECM adjusts
the injection pulse duration to achieve the ideal air-fuel ratio. The
ideal air-fuel ratio occurs near the radical change from 1V to 0V.

CONSULT-II Reference Value in Data Monitor Mode

EBS00QPW

Specification data are reference values.

On Board Diagnosis Logic

EBS00QPX

To judge the malfunction, the output from the heated oxygen sensor
1 is monitored to determine whether the “rich” output is sufficiently
high and whether the “lean” output is sufficiently low. When both the
outputs are shifting to the lean side, the malfunction will be detected.

SEF463R

SEF288D

MONITOR ITEM

CONDITION

SPECIFICATION

HO2S1 (B1)
HO2S1 (B2)

●

Engine: After warming up

Maintaining engine speed at 2,000
rpm

0 - 0.3V

←→

Approx. 0.6 - 1.0V

HO2S1 MNTR (B1)
HO2S1 MNTR (B2)

LEAN

←→

RICH

Changes more than 5 times dur-
ing 10 seconds.

SEF300U

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1143
1143
(Bank 1)

Heated oxygen sensor 1
lean shift monitoring

The maximum and minimum voltage from the
sensor are not reached to the specified voltages.

●

Heated oxygen sensor 1

●

Heated oxygen sensor 1 heater

●

Fuel pressure

●

Injectors

●

Intake air leaks

P1163
1163
(Bank 2)

EC-416

[QG (WITH EURO-OBD)]

DTC P1143, P1163 HO2S1 (A/T MODELS)

DTC Confirmation Procedure

EBS00QPY

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 10 seconds before conducting the next test.

TESTING CONDITION:

●

Always perform at a temperature above

−

C (14

F).

●

Before performing following procedure, confirm that battery voltage is more than 11V at idle.

WITH CONSULT-II

Start engine and warm it up to normal operating temperature.

Stop engine and wait at least 10 seconds.

Turn ignition switch “ON” and select “HO2S1 (B1) P1143” of “HO2S1” or “HO2S1 (B2) P1163” of “HO2S1”
in “DTC WORK SUPPORT” mode with CONSULT-II.

Touch “START”.

Start engine and let it idle for at least 3 minutes.

NOTE:
Never raise engine speed above 3,200 rpm after this step. If
the engine speed limit is exceeded, return to step 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 50 seconds or more.)

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

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

EC-417, "Diagnostic

Procedure"

PBIB0546E

ENG SPEED

1,200 - 2,600 rpm

Vehicle speed

50 - 100 km/h (30 - 62 MPH)

B/FUEL SCHDL

3.0 - 6.5 msec

Selector lever

Suitable position

PBIB0547E

SEC769C

DTC P1143, P1163 HO2S1 (A/T MODELS)

EC-417

[QG (WITH EURO-OBD)]

Overall Function Check

EBS00QPZ

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

WITH GST

Start engine and warm it up to normal operating temperature.

Set voltmeter probes between ECM terminal 35 [HO2S1 (B1) signal] or 36 [HO2S1 (B2) signal] and
engine ground.

Check one of the following with engine speed held at 2,000 rpm
constant under no load.

–

The maximum voltage is over 0.6V at least one time.

–

The minimum voltage is over 0.1V at least one time.

If NG, go to

EC-417, "Diagnostic Procedure"

Diagnostic Procedure

EBS00QQ0

RETIGHTEN GROUND SCREWS

Turn ignition switch “OFF”.

Loosen and retighten engine ground screws.

>> GO TO 2.

RETIGHTEN HEATED OXYGEN SENSOR 1

Loosen and retighten corresponding heated oxygen sensor 1.

>> GO TO 3.

MBIB0019E

MBIB0095E

Tightening torque: 40 - 60 N·m (4.1 - 6.2 kg-m, 30 - 44 ft-lb)

MBIB0099E

EC-418

[QG (WITH EURO-OBD)]

DTC P1143, P1163 HO2S1 (A/T MODELS)

CLEAR THE SELF-LEARNING DATA

With CONSULT-II

Start engine and warm it up to normal operating temperature.

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

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

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

Start engine and warm it up to normal operating temperature.

Turn ignition switch “OFF”.

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

Stop engine and reconnect mass air flow sensor harness con-
nector.

Make sure that DTC P0102 is displayed.

Erase the DTC memory. Refer to

EC-68, "HOW TO ERASE

Make sure that DTC P0000 is displayed.

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-288

>> GO TO 4.

CHECK HEATED OXYGEN SENSOR 1 HEATER

Refer to

EC-164, "Component Inspection"

OK or NG

>> GO TO 5.

>> Replace malfunctioning heated oxygen sensor 1.

CHECK HEATED OXYGEN SENSOR 1

Refer to

EC-419, "Component Inspection"

OK or NG

>> GO TO 6.

>> Replace malfunctioning heated oxygen sensor 1.

CHECK INTERMITTENT INCIDENT

Refer to

EC-138, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

For circuit, refer to

EC-201, "Wiring Diagram"

>> INSPECTION END

SEF215Z

MBIB0096E

DTC P1143, P1163 HO2S1 (A/T MODELS)

EC-419

[QG (WITH EURO-OBD)]

Component Inspection

EBS00QQ1

HEATED OXYGEN SENSOR 1

With CONSULT-II

Start engine and warm it up to normal operating temperature.

Select “MANU TRIG” and adjust “TRIGGER POINT” to 100% in “DATA MONITOR” mode with CONSULT-
II.

Select “HO2S1 (B1)/(B2)” and “HO2S1 MNTR (B1)/(B2)”.

Hold engine speed at 2,000 rpm under no load during the following steps.

Touch “RECORD” on CONSULT-II screen.

Check the following.

●

“HO2S1 MNTR (B1)/(B2)” in “DATA MONITOR” mode
changes from “RICH” to “LEAN” to “RICH” more than 5 times
in 10 seconds.
5 times (cycles) are counted as shown at right.

●

“HO2S1 (B1)/(B2)” voltage goes above 0.6V at least once.

●

“HO2S1 (B1)/(B2)” voltage goes below 0.3V at least once.

●

“HO2S1 (B1)/(B2)” voltage never exceeds 1.0V.

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 system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

SEF646Y

SEF647Y

SEF648Y

EC-420

[QG (WITH EURO-OBD)]

DTC P1143, P1163 HO2S1 (A/T MODELS)

Without CONSULT-II

Start engine and warm it up to normal operating temperature.

Set voltmeter probes between ECM terminal 35 [HO2S1 (B1) signal] or 36 [HO2S1 (B2) signal] and
engine ground.

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

●

The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V
more than 5 times within 10 seconds.

●

The maximum voltage is over 0.6V at least one time.

●

The minimum voltage is below 0.3V at least one time.

●

The voltage never exceeds 1.0V.

1 time: 0 - 0.3V

→

0.6 - 1.0V

→

0 - 0.3V

2 times: 0 - 0.3V

→

0.6 - 1.0V

→

0 - 0.3V

→

0.6 - 1.0V

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 system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

Removal and Installation

EBS00QQ2

HEATED OXYGEN SENSOR 1

Refer to

EM-21, "EXHAUST MANIFOLD AND CATALYTIC CONVERTER"

MBIB0019E

DTC P1144 HO2S1 (M/T MODELS)

EC-421

[QG (WITH EURO-OBD)]

DTC P1144 HO2S1 (M/T MODELS)

PFP:22690

Component Description

EBS00QQ3

CONSULT-II Reference Value in Data Monitor Mode

EBS00QQ4

Specification data are reference values.

On Board Diagnosis Logic

EBS00QQ5

To judge the malfunction, the output from the heated oxygen sensor
1 is monitored to determine whether the “rich” output is sufficiently
high and “lean” output is sufficiently low. When both the outputs are
shifting to the rich side, the malfunction will be detected.

SEF463R

SEF288D

MONITOR ITEM

CONDITION

SPECIFICATION

HO2S1 (B1)

●

Engine: After warming up

Maintaining engine speed at 2,000
rpm

0 - 0.3V

←→

Approx. 0.6 - 1.0V

HO2S1 MNTR (B1)

LEAN

←→

RICH

Changes more than 5 times dur-
ing 10 seconds.

SEF299U

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1144
1144

Heated oxygen sensor 1
rich shift monitoring

The maximum and minimum voltages from the
sensor are beyond the specified voltages.

●

Heated oxygen sensor 1

●

Heated oxygen sensor 1 heater

●

Fuel pressure

●

Injectors

EC-422

[QG (WITH EURO-OBD)]

DTC P1144 HO2S1 (M/T MODELS)

DTC Confirmation Procedure

EBS00QQ6

CAUTION:

TESTING CONDITION:

●

Always perform at a temperature above

−

C (14

F).

●

Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

WITH CONSULT-II

Start engine and warm it up to normal operating temperature.

Stop engine and wait at least 5 seconds.

Turn ignition switch “ON” and select “HO2S1 (B1) P1144” of “HO2S1” in “DTC WORK SUPPORT” mode
with CONSULT-II.

Touch “START”.

Start engine and 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 5.

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

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

EC-423, "Diagnostic

Procedure"

PBIB0548E

ENG SPEED

1,700 - 2,600 rpm

Vehicle speed

50 - 100 km/h (30 - 62 MPH)

B/FUEL SCHDL

3.0 - 5.2 msec

Selector lever

Suitable position

PBIB0549E

SEC772C

DTC P1144 HO2S1 (M/T MODELS)

EC-423

[QG (WITH EURO-OBD)]

Overall Function Check

EBS00QQ7

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

WITH GST

Start engine and warm it up to normal operating temperature.

Set voltmeter probes between ECM terminal 35 (HO2S1 signal) and engine ground.

Check one of the following with engine speed held at 2,000 rpm
constant under no load.

–

The maximum voltage is below 0.8V at least one time.

–

The minimum voltage is below 0.35V at least one time.

If NG, go to

EC-423, "Diagnostic Procedure"

Diagnostic Procedure

EBS00QQ8

RETIGHTEN GROUND SCREWS

Turn ignition switch “OFF”.

Loosen and retighten engine ground screws.

>> GO TO 2.

RETIGHTEN HEATED OXYGEN SENSOR 1

Loosen and retighten heated oxygen sensor 1.

>> GO TO 3.

MBIB0018E

MBIB0095E

Tightening torque: 40 - 60 N·m (4.1 - 6.2 kg-m, 30 - 44 ft-lb)

MBIB0098E

EC-424

[QG (WITH EURO-OBD)]

DTC P1144 HO2S1 (M/T MODELS)

CLEAR THE SELF-LEARNING DATA

With CONSULT-II

Start engine and warm it up to normal operating temperature.

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

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

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

Start engine and warm it up to normal operating temperature.

Turn ignition switch “OFF”.

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

Stop engine and reconnect mass air flow sensor harness con-
nector.

Make sure that DTC P0102 is displayed.

Erase the DTC memory. Refer to

EC-68, "HOW TO ERASE

Make sure that DTC P0000 is displayed.

Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0172 detected?
Is it difficult to start engine?

Yes or No

Yes

>> Perform trouble diagnosis for DTC P0172. Refer to

EC-296

>> GO TO 4.

CHECK HO2S1 CONNECTOR FOR WATER

Turn ignition switch “OFF”.

Disconnect heated oxygen sensor 1 harness connector.

Check connectors for water.

OK or NG

>> GO TO 5.

>> Repair or replace harness or connectors.

CHECK HEATED OXYGEN SENSOR 1 HEATER

Refer to

EC-156, "Component Inspection"

OK or NG

>> GO TO 6.

>> Replace heated oxygen sensor 1.

SEF215Z

MBIB0096E

Water should not exist.

MBIB0091E

DTC P1144 HO2S1 (M/T MODELS)

EC-425

[QG (WITH EURO-OBD)]

CHECK HEATED OXYGEN SENSOR 1

Refer to

EC-425, "Component Inspection"

OK or NG

>> GO TO 7.

>> Replace heated oxygen sensor 1.

CHECK INTERMITTENT INCIDENT

Refer to

EC-138, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

For circuit, refer to

EC-195, "Wiring Diagram"

>> INSPECTION END

Component Inspection

EBS00QQ9

HEATED OXYGEN SENSOR 1

With CONSULT-II

Start engine and warm it up to normal operating temperature.

Select “MANU TRIG” and adjust “TRIGGER POINT” to 100% in “DATA MONITOR” mode with CONSULT-
II.

Select “HO2S1 (B1)” and “HO2S1 MNTR (B1)”.

Hold engine speed at 2,000 rpm under no load during the follow-
ing steps.

Touch “RECORD” on CONSULT-II screen.

Check the following.

●

“HO2S1 MNTR (B1)” in “DATA MONITOR” mode changes
from “RICH” to “LEAN” to “RICH” more than 5 times in 10 sec-
onds.
5 times (cycles) are counted as shown at right.

●

“HO2S1 (B1)” voltage goes above 0.6V at least once.

●

“HO2S1 (B1)” voltage goes below 0.3V at least once.

●

“HO2S1 (B1)” voltage never exceeds 1.0V.

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.

SEF646Y

SEF217YA

SEF648Y

EC-426

[QG (WITH EURO-OBD)]

DTC P1144 HO2S1 (M/T MODELS)

●

Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

Without CONSULT-II

Start engine and warm it up to normal operating temperature.

Set voltmeter probes between ECM terminal 35 (HO2S1 signal) and engine ground.

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

●

The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V
more than 5 times within 10 seconds.

●

The maximum voltage is over 0.6V at least one time.

●

The minimum voltage is below 0.3V at least one time.

●

The voltage never exceeds 1.0V.

1 time: 0 - 0.3V

→

0.6 - 1.0V

→

0 - 0.3V

2 times: 0 - 0.3V

→

0.6 - 1.0V

→

0 - 0.3V

→

0.6 - 1.0V

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 system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

Removal and Installation

EBS00QQA

HEATED OXYGEN SENSOR 1

Refer to

EM-21, "EXHAUST MANIFOLD AND CATALYTIC CONVERTER"

MBIB0018E

Almera Tino V10 (2003 year). Manual - part 87