NISSAN TIIDA 2007 Service Repair Manual

EC-602
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
FUEL INJECTOR
FUEL INJECTOR
DescriptionINFOID:0000000001693431
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
Component Function CheckINFOID:0000000001693432
1.INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
YES >> GO TO 2.
NO >> Go to EC-602, "
Diagnosis Procedure".
2.CHECK FUEL INJECTOR FUNCTION
With CONSULT-III
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-III
1. Let engine idle.
2. Listen to each fuel injector operating sound.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-602, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001693433
1.CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Turn ignition switch ON.
4. Check the voltage between fuel injector harness connector and ground.
PBIA9664J
Clicking noise should be heard.
PBIB3332E

FUEL INJECTOR
EC-603
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Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors F8, E8
 10A fuse (No. 55)
 Harness for open or short between fuel injector and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel injector 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 4.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK FUEL INJECTOR
Refer to EC-603, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning fuel injector.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000001693434
1.CHECK FUEL INJECTOR
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Check resistance between fuel injector terminals as follows.
Fuel injector
Ground Voltage
Cylinder Connector Terminal
1F17 1
Ground Battery voltage 2F18 1
3F19 1
4F20 1
Fuel injector ECM
Continuity
Cylinder Connector Terminal Connector Terminal
1F17 2
F1031
Existed 2F18 2 30
3F19 2 29
4F20 2 25

EC-604
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
FUEL INJECTOR
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace malfunctioning fuel injector.
Terminals Resistance [at 10 - 60°C (50 - 140°F)]
1 and 2 11.1 - 14.5Ω

FUEL PUMP
EC-605
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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FUEL PUMP
DescriptionINFOID:0000000001693435
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine
startability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows
that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when
the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
Component Function CheckINFOID:0000000001693436
1.CHECK FUEL PUMP FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers.
Is the inspection result normal?
YES >> INSPECTION END
NO >>EC-605, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001693437
1.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 2.
2.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
Sensor Input signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and crankingOperates.
When engine is stopped Stops in 1.5 seconds.
Except as shown aboveSto ps .
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
ALBIA0276ZZ
(+) (–)
Vo l ta g e
Connector Terminal Connector Terminal
F10 23 E16 108 Battery voltage

EC-606
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
FUEL PUMP
1. Turn ignition switch OFF.
2. Disconnect IDPDM E/R harness connector.
3. Check the continuity between IPDM E/R harness connector and ECM harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.DETECT MALFUNCTIONING PART
Check the following.
 Harness or connectors E8, F8.
 Harness for open or short to ground and short power.
>> Repair harness or connectors.
4.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect “fuel level sensor unit and fuel pump” harness connector.
4. Turn ignition switch ON.
5. Check voltage between “fuel level sensor unit and fuel pump” harness connector and ground.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 5.
5.CHECK 10A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse (No. 48) from IPDM E/R.
3. Check 15A fuse.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace fuse.
6.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1. Disconnect IPDM E/R harness connector.
2. Check the continuity between IPDM E/R harness connector and “fuel level sensor unit and fuel pump”
harness connector.
3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 10.
ECM IPDM E/R
Continuity
Connector Terminal Connector Terminal
F10 23 E46 47 Existed
Fuel level sensor unit
and fuel pump
Ground Voltage
Connector Terminal
B40 1 GroundBattery voltage should exist 1
second after ignition switch is
turn ON.
IPDM E/RFuel level sensor unit and
fuel pump
Continuity
Connector Terminal Connector Terminal
E45 36 B40 1 Existed

FUEL PUMP
EC-607
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NO >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E7, M69, M12, B1.
 Harness for open or short between IPDM E/R and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to power in harness or connectors.
8.CHECK FUEL PUMP GROUND CIRCUIT
1. Check the continuity between “fuel level sensor unit and fuel pump” and ground.
2. Also heck harness for short to power.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair open circuit or short to power in harness or connectors.
9.CHECK FUEL PUMP
Refer to EC-607, "
Component Inspection (Fuel Pump)".
Is the inspection result normal?
YES >> GO TO 10.
NO >> Replace fuel pump.
10.CHECK INTERMITTENT INCIDENT
Refer to GI-55, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors.
Component Inspection (Fuel Pump)INFOID:0000000001693438
1.CHECK FUEL PUMP
1. Turn ignition switch OFF.
2. Disconnect “fuel level sensor unit and fuel pump” harness connector.
3. Check resistance between “fuel level sensor unit and fuel pump” terminals as follows.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace “fuel level sensor unit and fuel pump”.
Fuel level sensor unit
and fuel pump
Ground Continuity
Connector Terminal
B40 3 Ground Existed
Terminals Resistance
1 and 3 0.2 - 5.0Ω [at 25°C (77°F)]

EC-608
< COMPONENT DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
HO2S1
HO2S1
DescriptionINFOID:0000000001697491
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.
Component Function CheckINFOID:0000000001697492
1.CHECK HEATED OXYGEN SENSOR 1 FUNCTION
With CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Select “HO2S1 MNITOR (B1)” in ”DATA MONITOR” mode with CONSULT-III.
3. Keep the engine speed at 2,000 rpm under no load, and make
sure that the monitors fluctuates between LEAN and RICH more
than five times in 10 seconds.
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Stop engine and wait at least 10 seconds.
3. Set ECM in Diagnostic test mode - II (Heated oxygen sensor 1 monitor).
SEF463R
SEF288D
1 times: RICH →LEAN → RICH
2 times: RICH → LEAN → RICH → LEAN → RICH
SEF217YA

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

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