2007 NISSAN TIIDA EC Engine Control System

EC-374
< PRECAUTION >[HR16DE (WITH EURO-OBD)]
PRECAUTIONS
When measuring ECM signals with a circuit tester, never allow
the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
Do not use ECM ground terminals when measuring input/out-
put voltage. Doing so may result in damage to the ECM’s tran-
sistor. Use a ground other than ECM terminals, such as the
ground.
Do not operate fuel pump when there is no fuel in lines.
Tighten fuel hose clamps to the specified torque.
Do not depress accelerator pedal when starting.
Immediately after starting, do not rev up engine unnecessar-
ily.
Do not rev up engine just prior to shutdown.
When installing C.B. ham radio or a mobile phone, be sure to
observe the following as it may adversely affect electronic
control systems depending on installation location.
-Keep the antenna as far as possible from the electronic con-
trol units.
-Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
-Adjust the antenna and feeder line so that the standing-wave
ratio can be kept smaller.
-Be sure to ground the radio to vehicle body.
SEF348N
SEF709Y
SEF708Y

EC-390
< BASIC INSPECTION >[HR16DE (WITHOUT EURO-OBD)]
INSPECTION AND ADJUSTMENT
quirement
INFOID:0000000001161437
1.START
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
>> END
THROTTLE VALVE CLOSED POSITION LEARNING
THROTTLE VALVE CLOSED POSITION LEARNING : DescriptionINFOID:0000000001161438
Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle
valve by monitoring the throttle position sensor output signal. It must be performed each time harness connec-
tor of electric throttle control actuator or ECM is disconnected.
THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement
INFOID:0000000001161439
1.START
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
>> END
IDLE AIR VOLUME LEARNING
IDLE AIR VOLUME LEARNING : DescriptionINFOID:0000000001161440
Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps each engine idle speed
within the specific range. It must be performed under any of the following conditions:
 Each time electric throttle control actuator or ECM is replaced.
 Idle speed or ignition timing is out of specification.
IDLE AIR VOLUME LEARNING : Special Repair RequirementINFOID:0000000001161441
1.PRECONDITIONING
Make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
 Battery voltage: More than 12.9V (At idle)
 Engine coolant temperature: 70 - 100°C (158 - 212°F)
 Park/neutral position switch: ON
 Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light only
small lamps.
 Steering wheel: Neutral (Straight-ahead position)
 Vehicle speed: Stopped
 Transmission: Warmed-up
- For A/T models
 With CONSULT-III: Drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/T” system indi-
cates less than 0.9V.
 Without CONSULT-III: Drive vehicle for 10 minutes.
- For M/T models
 Drive vehicle for 10 minutes.

ENGINE CONTROL SYSTEM
EC-393
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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FUNCTION DIAGNOSIS
ENGINE CONTROL SYSTEM
System DiagramINFOID:0000000001693459
JMBIA0398GB

EC-394
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ENGINE CONTROL SYSTEM
System Description
INFOID:0000000001693460
ECM performs various controls such as fuel injection control and ignition timing control.
Component Parts LocationINFOID:0000000001693461
1. Ignition coil (with power transistor)
and spark plug2. Intake valve timing control solenoid
valve3. Refrigerant pressure sensor
4. Knock sensor 5. Fuel injector 6. Cooling fan motor
7. Camshaft position sensor (PHASE) 8. IPDM E/R 9. ECM
10. Mass air flow sensor (with intake air
temperature sensor)11. Engine coolant temperature sensor 12. Electric throttle control actuator
(with built in throttle position sensor
and throttle control motor)
13. EVAP canister purge volume control
solenoid valve
PBIB2939E

ENGINE CONTROL SYSTEM
EC-395
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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1. Mass air flow sensor
(with intake air temperature sensor)2. Engine coolant temperature sensor 3. Electric throttle control actuator
4. Camshaft position sensor (PHASE) 5. Ignition coil (with power transistor) 6. Fuel injector
7. EVAP canister purge volume control
solenoid valve
Vehicle front
PBIB2940E

EC-396
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ENGINE CONTROL SYSTEM
1. ECM harness connectors 2. ECM 3. IPDM E/R
4. Fuel pump fuse (15A) 5. Intake valve timing control solenoid
valve6. Knock sensor
7. Refrigerant pressure sensor 8. PCV valve
Vehicle front
PBIB2941E

ENGINE CONTROL SYSTEM
EC-397
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
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1. Exhaust manifold 2. Heated oxygen sensor 1 3. Heated oxygen sensor 2
4. Heated oxygen sensor 2 harness
connector
Vehicle front
PBIB2942E
PBIB2943E

EC-398
< FUNCTION DIAGNOSIS >[HR16DE (WITHOUT EURO-OBD)]
ENGINE CONTROL SYSTEM
1. Cooling fan motor harness connec-
tor2. Crankshaft position sensor 3. Stop lamp switch
4. Brake pedal 5. Accelerator pedal position sensor
harness connector6. Accelerator pedal position sensor
7. Accelerator pedal 8. Fuel level sensor unit and fuel pump
harness connector (view with in-
spection hole cover removed)9. Fuel pressure regulator
10. Fuel pump
AWBIA0044ZZ