Check engine NISSAN TIIDA 2007 Service Repair Manual

HO2S1
EC-609
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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

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

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-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.

EC-618
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
HO2S2
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.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
8.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000001697502
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.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
PBIB0551E

HO2S2
EC-619
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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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 4.
4.CHECK HEATED OXYGEN SENSOR 2-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 5.
5.CHECK HEATED OXYGEN SENSOR 2-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 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
ECM
Ground Condition Voltage
Connector Terminal
F850
(HO2S2 signal)GroundRevving up to 4,000 rpm under no load at
least 10 timesThe 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.
ECM
Ground Condition Voltage
Connector Terminal
F850
(HO2S2 signal)GroundKeeping engine speed at idle for 10 min-
utesThe 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.
ECM
Ground Condition Voltage
Connector Terminal
F850
(HO2S2 signal)GroundCoasting from 80 km/h (50 MPH) in 4th
gear positionThe 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.

EC-620
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
HO2S2 HEATER
HO2S2 HEATER
DescriptionINFOID:0000000001697503
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
Component Function CheckINFOID:0000000001697504
1.CHECK HEATED OXYGEN SENSOR 2 HRATER 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 let it idle.
4. Check the voltage between ECM harness connector and ground under the following condition.
: 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-620, "
Diagnosis Procedure"
Diagnosis ProcedureINFOID:0000000001697505
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 2
heater controlHeated 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 3,900OFF
Below 3,900 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 loadON
ECM
Ground Condition Voltage signal
Connector Terminal
F75
(HO2S2 heater signal)GroundAt idleApprox. 10V
Engine speed: Above 3,900 rpmBATTERY VOLTAGE
(11 - 14V)
JMBIA0325GB

IGNITION SIGNAL
EC-625
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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IGNITION SIGNAL
DescriptionINFOID:0000000001693439
The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns
ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil
secondary circuit.
Component Function CheckINFOID:0000000001693440
1.INSPECTION START
Turn ignition switch OFF, and restart engine.
Does the engine start?
YES-1 >> With CONSULT-III: GO TO 2.
YES-2 >> Without CONSULT-III: GO TO 3.
NO >> Go to EC-625, "
Diagnosis Procedure".
2.IGNITION SIGNAL FUNCTION
With CONSULT-III
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.
2. Make sure that each circuit produces a momentary engine speed drop.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-625, "
Diagnosis Procedure".
3.IGNITION SIGNAL FUNCTION
Without CONSULT-III
1. Let engine idle.
2. Read the voltage signal between ECM harness connector terminals as follows.
NOTE:
The pulse cycle changes depending on rpm at idle.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-625, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001693441
1.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
2. Check the voltage between ECM harness connector terminals as follows.
ECM Ground
Voltage signal
Connector Terminal Connector Terminal
F1017
E16 108 18
21
22
JMBIA0329GB
(+) (–)
Vo l ta g e
Connector Terminal Connector Terminal
E16 105 E16 108 Battery voltage

EC-628
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
IGNITION SIGNAL
Component Inspection (Ignition Coil with Power Transistor)
INFOID:0000000001693442
1.CHECK IGNITION COIL WITH POWER TRANSISTOR-I
1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as follows.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace malfunctioning ignition coil with power transistor.
2.CHECK IGNITION COIL WITH POWER TRANSISTOR-II
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT-III to release fuel pressure, or fuel pressure applies again during the following pro-
cedure.
4. Start engine.
5. After engine stalls, crank it two or three times to release all fuel pressure.
6. Turn ignition switch OFF.
7. Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils.
8. Remove ignition coil and spark plug of the cylinder to be checked.
9. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
10. Connect spark plug and harness connector to ignition coil.
11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 -
0.66 in) between the edge of the spark plug and grounded metal
portion as shown in the figure.
12. Crank engine for about three seconds, and check whether spark
is generated between the spark plug and the grounded metal
portion.
CAUTION:
 Do not approach to the spark plug and the ignition coil
within 50 cm (19.7 in). Be careful not to get an electrical
shock while checking, because the electrical discharge
voltage becomes 20kV or more.
 It might cause to damage the ignition coil if the gap of more than 17 mm 0.66 in) is taken.
NOTE:
When the gap is less than 13 mm (0.52 in), the spark might be generated even if the coil is mal-
functioning.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace malfunctioning ignition coil with power transistor.
Component Inspection (Condenser)INFOID:0000000001693443
1.CHECK CONDENSER
1. Turn ignition switch OFF.
2. Disconnect condenser-2 harness connector.
Terminals Resistance [at 25°C (77°F)]
1 and 2 Except 0 or ∞ Ω
1 and 3
Except 0 Ω
2 and 3
Spark should be generated.
JMBIA0066GB

EC-630
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
MALFUNCTION INDICATOR
MALFUNCTION INDICATOR
DescriptionINFOID:0000000001693444
The Malfunction Indicator (MI) is located on the combination meter.
The MI will light up when the ignition switch is turned ON without the
engine running. This is a bulb check.
When the engine is started, the MI should go off. If the MI remains
on, the on board diagnostic system has detected an engine system
malfunction.
For details, refer to EC-630, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000001693445
1.CHECK MI FUNCTION
1. Turn ignition switch ON.
2. Make sure that MI lights up.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-630, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001693446
1.CHECK DTC
Check that DTC U1000 or U1001 is not displayed.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis for DTC U1000, U1001. Refer to EC-481, "
Diagnosis Procedure".
2.CHECK DTC WITH COMBINATION METER
Refer to MWI-22, "
CONSULT-III Function (METER/M&A)".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace.
3.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace combination meter.
NO >> Repair or replace.
SAT652J