Almera Tino V10 (2003 year). Manual — part 113
HO2S1 HEATER (A/T MODELS)
EC-827
[QG (WITHOUT EURO-OBD)]
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5.
CHECK HEATED OXYGEN SENSOR 1 HEATER
Refer to
EC-827, "Component Inspection"
.
OK or NG
OK
>> GO TO 6.
NG
>> Replace heated oxygen sensor 1.
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-644, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00R1N
HEATED OXYGEN SENSOR 1 HEATER
1.
Check resistance between HO2S1 terminals as follows.
2.
If NG, replace heated oxygen sensor 1.
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 sur-
face 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
EBS00R1O
HEATED OXYGEN SENSOR 1
Refer to
EM-21, "EXHAUST MANIFOLD AND CATALYTIC CONVERTER"
.
Terminal No.
Resistance
1 and 4
8 - 10
Ω
at 25
°
C (77
°
F)
2 and 3, 4
∞ Ω
(Continuity should not exist)
3 and 1, 2, 4
PBIB0542E
EC-828
[QG (WITHOUT EURO-OBD)]
HO2S2 HEATER (M/T MODELS)
HO2S2 HEATER (M/T MODELS)
PFP:226A0
Description
EBS00R1P
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
CONSULT-II Reference Value in Data Monitor Mode
EBS00R1Q
Specification data are reference values.
Sensor
Input Signal to ECM
ECM function
Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine speed
Heated oxygen sensor 2
heater control
Heated oxygen sensor 2 heater
Engine coolant temperature sensor
Engine coolant temperature
Mass air flow sensor
Amount of intake air
Engine speed rpm
Heated oxygen sensor 2 heater
Above 3,800
OFF
●
Below 3,800 rpm after the following conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and 4,000 rpm for
one minute and at idle for one minute under no load
ON
MONITOR ITEM
CONDITION
SPECIFICATION
HO2S2 HTR (B1)
●
Engine speed: Below 3,800 rpm after the following conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and 4,000 rpm for one
minute and at idle for one minute under no load
ON
●
Engine speed: Above 3,800 rpm
OFF
HO2S2 HEATER (M/T MODELS)
EC-829
[QG (WITHOUT EURO-OBD)]
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Wiring Diagram
EBS00R1R
YEC485A
EC-830
[QG (WITHOUT EURO-OBD)]
HO2S2 HEATER (M/T MODELS)
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
EBS00R1S
1.
CHECK OVERALL FUNCTION CHECK
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 one minute under no
load.
4.
Let engine idle for one minute.
5.
Set the voltmeter probe between ECM terminal 2 (HO2S2 heater signal) and ground.
6.
Check the voltage under the following conditions.
OK or NG
OK
>> INSPECTION END.
NG
>> GO TO 2.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
2
R/B
Heated oxygen sensor 2
heater
[Engine is running]
●
Engine speed: Below 3,800 rpm after the follow-
ing conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and
4,000 rpm for one minute and at idle for one
minute under no load.
0 - 1.0V
[Ignition switch “ON”]
●
Engine stopped
[Engine is running]
●
Engine speed is above 3,800 rpm.
BATTERY VOLTAGE
(11 - 14V)
Conditions
Voltage
At idle
0 - 1V
Engine speed is above 3,800 rpm
Battery voltage
PBIB0673E
HO2S2 HEATER (M/T MODELS)
EC-831
[QG (WITHOUT EURO-OBD)]
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2.
CHECK HO2S2 POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect heated oxygen sensor 2 harness connector.
3.
Turn ignition switch “ON”.
4.
Check voltage between HO2S2 terminal 4 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M71, F45
●
Fuse block (J/B) connector M1
●
10A fuse
●
Harness for open or short between heated oxygen sensor 2 and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal 2 and HO2S2 terminal 1.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK HEATED OXYGEN SENSOR 2 HEATER
Refer to
EC-832, "Component Inspection"
.
OK or NG
OK
>> GO TO 6.
NG
>> Replace heated oxygen sensor 2.
MBIB0256E
Voltage: Battery voltage
PBIB0541E
Continuity should exist.
EC-832
[QG (WITHOUT EURO-OBD)]
HO2S2 HEATER (M/T MODELS)
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-644, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00R1T
HEATED OXYGEN SENSOR 2 HEATER
1.
Check resistance between HO2S2 terminals as follows.
2.
If NG, replace heated oxygen sensor 2.
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 sur-
face 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
EBS00R1U
HEATED OXYGEN SENSOR 2
Refer to “EXHAUST SYSTEM”, FE-11.
Terminal No.
Resistance
1 and 4
5.0 - 7.0
Ω
at 25
°
C (77
°
F)
2 and 1, 3, 4
∞ Ω
(Continuity should not exist)
3 and 1, 2, 4
PBIB0542E
HO2S2 HEATER (A/T MODELS)
EC-833
[QG (WITHOUT EURO-OBD)]
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EC
HO2S2 HEATER (A/T MODELS)
PFP:226A0
Description
EBS00R1V
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heaters corresponding to the engine
speed, amount of intake air and engine coolant temperature.
OPERATION
CONSULT-II Reference Value in Data Monitor Mode
EBS00R1W
Specification data are reference values.
Sensor
Input Signal to ECM
ECM function
Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine speed
Heated oxygen sensor 2
heater control
Heated oxygen sensor 2
heaters
Engine coolant temperature sensor
Engine coolant temperature
Mass air flow sensor
Amount of intake air
Engine speed rpm
Heated oxygen sensor 2 heaters
Above 3,600
OFF
●
Below 3,600 rpm after the following conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and 4,000 rpm for
one minute and at idle for one minute under no load
ON
MONITOR ITEM
CONDITION
SPECIFICATION
HO2S2 HTR (B1)
HO2S2 HTR (B2)
●
Ignition switch: ON (Engine stopped)
●
Engine is running above 3,600 rpm.
OFF
●
Engine speed: Below 3,600 rpm after the following conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and 4,000 rpm for one
minute and at idle for one minute under no load
ON
EC-834
[QG (WITHOUT EURO-OBD)]
HO2S2 HEATER (A/T MODELS)
Wiring Diagram
EBS00R1X
BANK 1
YEC486A
HO2S2 HEATER (A/T MODELS)
EC-835
[QG (WITHOUT EURO-OBD)]
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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.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
2
R/B
Heated oxygen sensor 2
heater (bank 1)
[Engine is running]
●
Engine speed: Below 3,600 rpm after the follow-
ing conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and
4,000 rpm for one minute and at idle for one
minute under no load
0 - 1.0V
[Ignition switch “ON”]
●
Engine stopped
[Engine is running]
●
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
EC-836
[QG (WITHOUT EURO-OBD)]
HO2S2 HEATER (A/T MODELS)
BANK 2
YEC487A
HO2S2 HEATER (A/T MODELS)
EC-837
[QG (WITHOUT EURO-OBD)]
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EC
Specification data are reference values and are measured between each terminal and body 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
EBS00R1Y
1.
CHECK OVERALL FUNCTION
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 one minute under no
load.
4.
Let engine idle for one minute.
5.
Set voltmeter probes between ECM terminal 2 [HO2S2(B1) heater signal] or 7 [HO2S2(B2) heater signal]
and ground.
6.
Check the voltage under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
7
W/R
Heated oxygen sensor 2
heater (bank 2)
[Engine is running]
●
Engine speed: Below 3,600 rpm after the follow-
ing conditions are met.
–
Engine: After warming up
–
Keeping the engine speed between 3,500 and
4,000 rpm for one minute and at idle for one
minute under no load
0 - 1.0V
[Ignition switch “ON”]
●
Engine stopped
[Engine is running]
●
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
Conditions
voltage
At idle
0 - 1V
Engine speed is above 3,600 rpm.
Battery voltage
MBIB0040E
EC-838
[QG (WITHOUT EURO-OBD)]
HO2S2 HEATER (A/T MODELS)
2.
CHECK HO2S2 POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect heated oxygen sensor 2 harness connector.
3.
Turn ignition switch “ON”.
4.
Check voltage between HO2S2 terminal 4 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M71, F45
●
Fuse block (J/B) connector M1
●
10A fuse
●
Harness for open or short between heated oxygen sensor 2 and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
MBIB0094E
Voltage:
Battery voltage
PBIB0541E
Terminals
Bank
ECM
Sensor
7
1
1
2
1
2
Continuity should exist.
HO2S2 HEATER (A/T MODELS)
EC-839
[QG (WITHOUT EURO-OBD)]
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5.
CHECK HEATED OXYGEN SENSOR 2 HEATER
Refer to
EC-839, "Component Inspection"
.
OK or NG
OK
>> GO TO 7.
NG
>> Replace malfunctioning heated oxygen sensor 2.
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-644, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00R1Z
HEATED OXYGEN SENSOR 2 HEATER
1.
Check resistance between HO2S2 terminals as follows.
2.
If NG, replace heated oxygen sensor 2.
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 sur-
face 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
EBS00R20
HATED OXYGEN SENSOR 2
Refer to
EM-21, "EXHAUST MANIFOLD AND CATALYTIC CONVERTER"
.
Terminal No.
Resistance
2 and 3
5.0 - 7.0
Ω
at 25
°
C (77
°
F)
1 and 2, 3, 4
∞ Ω
(Continuity should not exist)
4 and 1, 2, 3
SEF249Y
EC-840
[QG (WITHOUT EURO-OBD)]
IAT SENSOR
IAT SENSOR
PFP:22630
Component Description
EBS00R21
The intake air temperature sensor is built into mass air flow sensor.
The sensor detects intake air temperature and transmits a signal to
the ECM.
The temperature sensing unit uses a thermistor which is sensitive to
the change in temperature. Electrical resistance of the thermistor
decreases in response to the temperature rise.
<Reference data>
*: These data are reference values and are measured between ECM terminal 34
(Intake air temperature sensor) and body ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output
voltage. Doing so may result in damage to the ECM's transistor.
Use a ground other than ECM terminals, such as the ground.
SEC266C
Intake air
temperature
°
C (
°
F)
Voltage*
V
Resistance
k
Ω
25 (77)
3.32
1.9 - 2.1
80 (176)
1.23
0.31 - 0.37
SEF012P
IAT SENSOR
EC-841
[QG (WITHOUT EURO-OBD)]
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Wiring Diagram
EBS00R22
YEC488A
EC-842
[QG (WITHOUT EURO-OBD)]
IAT SENSOR
Diagnostic Procedure
EBS00R23
1.
CHECK OVERALL FUNCTION
1.
Turn ignition switch “ON”.
2.
Check voltage between ECM terminal 34 and ground with CON-
SULT-II or tester.
OK or NG
OK
>> INSPECTION END.
NG
>> GO TO 2.
2.
CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect mass air flow sensor (intake air temperature sensor
is built-into) harness connector.
3.
Turn ignition switch “ON”.
4.
Check voltage between mass air flow sensor terminal 5 and
ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
3.
CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal 67 and mass air flow sensor terminal 3.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
Voltage: Approximately 0 - 4.8V
MBIB0041E
MBIB0096E
Voltage: Approximately 5V
PBIB0066E
Continuity should exist.
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