2007 NISSAN TIIDA sensor

HO2S1
EC-609
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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4. Keep the engine speed at 2,000 rpm under no load, and make
sure that the MI comes ON more than five times in 10 seconds.
Is the inspection result normal?
YES >> INSPECTION END.
NO >> Go to EC-609, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001697493
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E21. Refer to Ground Inspection in GI-58, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace ground connection.
2.RETIGHTEN HEATED OXYGEN SENSOR 1
Loosen and retighten the heated oxygen sensor 1.
>> GO TO 3.
3.CHECK EXHAUST GAS LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before three way catalyst (manifold).
Is exhaust gas leak detected?
YES >> Repair or replace.
NO >> GO TO 4.
4.CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> Repair or replace.
NO >> GO TO 5.
5.CHECK HO2S1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
SAT652J
Tightening torque: 50 N-m (5.1 kg-m, 37 ft-lb)
SEC502D

EC-610
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
HO2S1
2. Disconnect heated oxygen sensor 1 harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between HO2S1 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 6.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK HEATED OXYGEN SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between HO2S1 harness connector and ECM harness connector.
2. Check the continuity between HO2S1 harness connector or ECM harness connector and ground.
3. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK MASS AIR FLOW SENSOR
Check mass air flow sensor.
Refer to EC-489, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Replace mass air flow sensor.
8.CHECK PCV VALVE
Refer to EC-631, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace PCV valve.
9.CHECK HEATED OXYGEN SENSOR 1
Perform EC-611, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 10.
NO >> Replace heated oxygen sensor 1.
10.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
>> INSPECTION END
HO2S1 ECM
Continuity
Connector Terminal Connector Terminal
F30 1 F8 56 existed
HO2S1 ECM
Continuity
Connector Terminal Connector Terminal
F30 1 F8 56 Existed
HO2S1 ECM
Ground Continuity
Connector Terminal Connector Terminal
F30 4 F8 49 Ground Not existed

HO2S1
EC-611
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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Component InspectionINFOID:0000000001697494
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 1
With CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Set “POST TRIGGER” to 100% in “DATA MONITOR” mode with CONSULT-III.
3. Select “HO2S1 (B1)” and “HO2S1 MNTR (B1)”.
4. Hold engine speed at 2,000 rpm under no load during the following steps.
5. Touch “RECORD” on CONSULT-III screen.
6. Check the following.
- “HO2S1 MNTR (B1)” 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 in the figure.
- “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 and approved anti-seize lubricant.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 3.
3.CHECK HEATED OXYGEN SENSOR 1
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Check the voltage between ECM harness connector and ground under the following condition.
SEF217YA
JMBIA0352ZZ

EC-612
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
HO2S1
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.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 4
4.REPLACE HEATED OXYGEN SENSOR 1
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 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
ECM
ground Condition Voltage
Connector Terminal
F849
(HO2S1 signal)GroundEngine speed held at 2,000
rpm constant 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 1 time.
 The minimum voltage is below 0.3V at least 1 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
→ 0 - 0.3V

HO2S1 HEATER
EC-613
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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HO2S1 HEATER
DescriptionINFOID:0000000001697495
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the Heated oxygen sensor 1 heater corresponding to the engine
operating condition to keep the temperature of Heated oxygen sensor 1 element at the specified range.
OPERATION
Component Function CheckINFOID:0000000001697496
1.CHECK HEATED OXYGEN SENSOR 2 HEATER FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Set tester prove between ECM harness connection and ground.
4. Start engine and let it idle.
5. Check the voltage under the following conditions.Verify that the oscilloscope screen shows the signal
waves as shown below.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Is the inspection result normal?
YES >> INSPECTION END.
NO >> Go to EC-613, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001697497
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E21. Refer to Ground Inspection in GI-58, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
Sensor Input Signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)Engine speed
Heated oxygen sensor 1
heater controlHeated oxygen sensor 1
heater
Mass air flow sensor Amount of intake air
Engine speed rpm Heated oxygen sensor 1 heater
Above 3,600OFF
Below 3,600 rpm after the following conditions are met.
 Engine: After warming upON
ECM
Ground Condition Voltage
Connector Terminal
F73
(HO2S1 HEATER signal)GroundAt idleApproximately 7.0
Engine speed is above 3,600
rpmBATTERY VOLTAGE
(11 - 14V)
JMBIA0325GB

EC-614
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
HO2S1 HEATER
NO >> Repair or replace ground connection.
2.CHECK HO2S1 POWER SUPPLY CIRCUIT
1. Disconnect HO2S1 harness connector.
2. Turn ignition switch ON.
3. Check the voltage between HO2S1 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors F123, E6
 10A fuse (No. 56)
 Harness for open or short between HO2S1 and fuse
>> Repair or replace harness or connectors.
4.CHECK HO2S1 HEATER OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between HO2S1 harness connector and ECM harness connector.
4. Also check harness for short to ground and 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 HO2S1 HEATER
Refer to EC-615, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 6.
6.REPLACE HEATED OXYGEN SENSOR 1
Replace Heated oxygen sensor 1.
CAUTION:
 Discard any heated oxygen sensor 1 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 heated oxygen sensor 1, clean exhaust system threads using Oxygen Sensor
Thread Cleaner tool and approved anti-seize lubricant.
>> INSPECTION END
7.CHECK INTERMITTENT INCIDENT
Perform GI-55, "
Intermittent Incident".
>> Repair or replace.
HO2S1
Ground Voltage
Connector Terminal
F30 2 Ground Battery voltage
HO2S1 ECM
Continuity
Connector Terminal Connector Terminal
F30 3 F7 3 Existed

HO2S1 HEATER
EC-615
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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Component InspectionINFOID:0000000001697498
1.CHECK HEATED OXYGEN SENSOR 1
1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 1 harness connector.
3. Check resistance between HO2S1 terminals as follows.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.REPLACE HEATED OXYGEN SENSOR 1
Replace heated oxygen sensor 1.
CAUTION:
 Discard any 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 sensor, clean exhaust system threads using Heated Oxygen Sensor Thread
Cleaner tool and approved anti-seize lubricant.
>> INSPECTION END
Terminals Resistance [at 25°C (77°F)]
2 and 3 3.4 - 4.4 Ω
1 and 2, 3, 4
∞ Ω
(Continuity should not exist)
4 and 1, 2, 3

EC-616
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
HO2S2
HO2S2
DescriptionINFOID:0000000001697499
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas on each bank.
Even if switching characteristics of the heated oxygen sensor 1 are
shifted, the air-fuel ratio is controlled to stoichiometric, by the signal
from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1V in richer conditions to 0V in leaner condi-
tions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.
Component Function CheckINFOID:0000000001697500
1.PERFORM COMPONENT FUNCTION CHECK-I
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 1 minute under no load.
4. Let engine idle for 1 minute.
5. Check the voltage between ECM harness connector and ground under the following condition.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.PERFORM COMPONENT FUNCTION CHECK-II
Check the voltage between ECM harness connector and ground under the following condition.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 3.
3.PERFORM COMPONENT FUNCTION CHECK-III
Check the voltage between ECM harness connector and ground under the following condition.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-617, "
Diagnosis Procedure".
SEF327R
ECM
Ground Condition Voltage
Connector Terminal
F850
(HO2S2 signal)GroundRevving up to 4,000 rpm under no load at
least 10 timesThe voltage does not remain in the range of
0.2 - 0.4V.
ECM
Ground Condition Voltage
Connector Terminal
F850
(HO2S2 signal)Ground Keeping engine speed at idle for 10 minutesThe voltage does not remain in the range of
0.2 - 0.4V.
ECM
Ground Condition Voltage
Connector Terminal
F850
(HO2S2 signal)GroundCoasting from 80 km/h (50 MPH) in 3rd gear po-
sition The voltage does not remain in the range of
0.2 - 0.4V.