Nissan Tiida C11. Instruction — part 547
EC-838
< COMPONENT DIAGNOSIS >
[MR18DE]
P0139 HO2S2
iAlways drive vehicle at a safe speed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000001161808
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E15. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
1.
Clear the mixture ratio self-learning value. Refer to
EC-696, "MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Special Repair Requirement"
.
2.
Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?
YES
>> Perform trouble diagnosis for DTC P0171 or P0172. Refer to
NO
>> GO TO 3.
3.
CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect heated oxygen sensor 2 harness connector.
3.
Disconnect ECM harness connector.
4.
Check the continuity between HO2S2 harness connector and ECM harness connector.
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between HO2S2 harness connector and ECM harness connector.
2.
Check the continuity between HO2S2 harness connector or ECM harness connector and ground.
3.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK HEATED OXYGEN SENSOR 2
HO2S2
ECM
Continuity
Connector
Terminal
Connector
Terminal
F13
1
F11
59
Existed
HO2S2
ECM
Continuity
Connector
Terminal
Connector
Terminal
F13
4
F11
50
Existed
HO2S2
ECM
Ground
Continuity
Connector
Terminal
Connector
Terminal
F13
4
F11
50
Ground
Not existed
P0139 HO2S2
EC-839
< COMPONENT DIAGNOSIS >
[MR18DE]
C
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EC
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EC-839, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
REPLACE HEATED OXYGEN SENSOR 2
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 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 and approved anti-seize lubricant.
>> INSPECTION END
7.
CHECK INTERMITTENT INCIDENT
GI-55, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000001161809
1.
INSPECTION START
Do you have CONSULT-III?
Do you have CONSULT-III?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK HEATED OXYGEN SENSOR 2
With CONSULT-III
1.
Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2.
Start engine and warm it up to the normal operating temperature.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
5.
Let engine idle for 1 minute.
6.
Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select “HO2S2 (B1)” as the monitor item with
CONSULT-III.
7.
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 0.50V at least once when the “FUEL INJECTION” is
−
25%.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 6.
3.
CHECK HEATED OXYGEN SENSOR 2-I
Without CONSULT-III
1.
Start engine and warm it up to the normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
PBIB0551E
EC-840
< COMPONENT DIAGNOSIS >
[MR18DE]
P0139 HO2S2
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.
Check the voltage between ECM harness connector terminals as follows under the following condition.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 4.
4.
CHECK HEATED OXYGEN SENSOR 2-II
Check the voltage between ECM harness connector terminals as follows under the following condition.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 5.
5.
CHECK HEATED OXYGEN SENSOR 2-III
Check the voltage between ECM harness connector terminals as follows under the following condition.
Always drive vhicle at a safe speed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 6.
6.
REPLACE HEATED OXYGEN SENSOR 2
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 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 and approved anti-seize lubricant.
>> INSPECTION END
(+)
(–)
Condition
Voltage
Connector
Terminal
Connector
Terminal
F11
50
(HO2S2 signal)
E11
59
Revving up to 4,000 rpm un-
der no load at least 10 times
The voltage should be above 0.68V at
least once during this procedure.
The voltage should be below 0.50V at least
once during this procedure.
(+)
(–)
Condition
Voltage
Connector
Terminal
Connector
Terminal
F11
50
(HO2S2 signal)
E11
59
Keeping engine speed at idle
for 10 minutes
The voltage should be above 0.68V at
least once during this procedure.
The voltage should be below 0.50V at least
once during this procedure.
(+)
(–)
Condition
Voltage
Connector
Terminal
Connector
Terminal
F11
50
(HO2S2 signal)
E11
59
Coasting from 80 km/h (50
MPH) in 4th gear position
The voltage should be above 0.68V at
least once during this procedure.
The voltage should be below 0.50V at least
once during this procedure.
P0141 HO2S2 HEATER
EC-841
< COMPONENT DIAGNOSIS >
[MR18DE]
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P0141 HO2S2 HEATER
Description
INFOID:0000000001161810
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
DTC Logic
INFOID:0000000001161811
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
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:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Wait at least 5 seconds.
3.
Check 1st trip DTC.
Is 1st tip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001161812
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E15. Refer to Ground Inspection in
.
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 3,600
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 1
minute and at idle for 1 minute under no load
ON
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P0141
Heated oxygen
sensor 2 heater
control circuit low
The current amperage in the heated oxygen sen-
sor 2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.)
• Harness or connectors
(The heated oxygen sensor 2 heater circuit is
open or shorted.)
• Heated oxygen sensor 2 heater
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