2011 NISSAN TIIDA coolant temperature

EC-32
< BASIC INSPECTION >[HR16DE]
HOW TO SET SRT CODE
*: Normal conditions- Sea level
- Flat road
- Ambient air temperature: 20 – 30
°C (68 – 86 °F)
NOTE:
Diagnosis is performed as quickly as possible under normal conditions. However, under other conditions,
diagnosis may also be performed. [For example: ambient air temperature other than 20 – 30°C (68 – 86 °F)]
Work ProcedureINFOID:0000000006314659
1.CHECK DTC
Check DTC.
Is any DTC detected?
YES >> Repair malfunction(s) and erase DTC. Refer to EC-478, "DTCIndex".
NO >> GO TO 2.
2.CHECK SRT STATUS
With CONSULT-III
Select “SRT STATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.
Without CONSULT-III
Perform “SRT status” mode with EC-103, "
On Board Diagnosis Function".
With GST
Select Service $01 with GST.
Is SRT code(s) set?
YES >> GO TO 10.
NO-1 >> With CONSULT-III: GO TO 3.
NO-2 >> Without CONSULT-III: GO TO 4.
3.DTC CONFIRMATION PROCEDURE
1. Select “SRT WORK SUPPORT” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.
2. For SRT(s) that is not set, perform the corre sponding “DTC CONFIRMATION PROCEDURE” according to
the “Performance Priority” in the “SRT ITEM” table. Refer to EC-29, "
Description".
3. Check DTC.
Is any DTC detected?
YES >> Repair malfunction(s) and erase DTC. Refer to EC-478, "DTCIndex".
NO >> GO TO 9.
4.PERFORM ROAD TEST
• Check the “Performance Priority” in the “SRT ITEM” table. Refer to EC-29, "
Description".
• Perform the most efficient SRT set driving pattern to set the SRT properly. Refer to EC-30, "
SRT Set Driving
Pattern".
In order to set all SRTs, the SRT set driving pattern must be performed at least once.
>> GO TO 5.
5.PATTERN 1
1. Check the vehicle condition;
- Engine coolant temperature is −10 to 35 °C (14 to 95 °F).
- Fuel tank temperature is more than 0 °C (32° F).
2. Start the engine.
3. Keep engine idling until the engine coolant temperature is greater than 70 °C (158° F)
NOTE:
ECM terminal voltage is follows;
• Engine coolant temperature
- −10 to 35 °C (14 to 95 °F): 3.0 – 4.3 V
-70 °(158° F): Less than 1.4 V
• Fuel tank temperature: Less than 4.1 V
Refer to EC-464, "
Reference Value".
Revision: May 2010 2011 Versa

ENGINE CONTROL SYSTEMEC-41
< FUNCTION DIAGNOSIS > [HR16DE]
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System DescriptionINFOID:0000000005929764
ECM performs various controls such as fuel
injection control and ignition timing control.
Component Parts LocationINFOID:0000000005929765
1. Ignition coil (with power transistor)
and spark plug 2. Intake valve timing control solenoid
valve 3. Refrigerant pressure sensor
4. Knock sensor 5. Fuel injector6. 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
Revision: May 2010 2011 Versa

EC-42
< FUNCTION DIAGNOSIS >[HR16DE]
ENGINE CONTROL SYSTEM
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
Revision: May 2010 2011 Versa

EC-46
< FUNCTION DIAGNOSIS >[HR16DE]
ENGINE CONTROL SYSTEM
Crankshaft position sensor (POS)
EC-267, "Description"
Cooling fan motorEC-71, "System Description"
Electric throttle control actuatorEC-400, "Description"
Engine coolant temperature sensorEC-168, "Description"
EVAP canister purge volume control solenoid valveEC-295, "Description"
EVAP canister vent control valveEC-305, "Description"
EVAP control system pressure sensorEC-316, "Description"
Fuel injectorEC-433, "Description"
Fuel level sensorEC-346, "Description"
Fuel pumpEC-437, "Description"
Fuel tank temperature sensorEC-244, "Description"
Heated oxygen sensor 2EC-207, "Description"
Heated oxygen sensor 2 heaterEC-142, "Description"
Ignition signalEC-442, "Description"
Intake air temperature sensorEC-164, "Description"
Intake valve timing control solenoid valveEC-89, "System Description"
Knock sensorEC-263, "Description"
Mass air flow sensorEC-150, "Description"
PCV valveEC-459, "Description"
Refrigerant pressure sensorEC-460, "Description"
Stop lamp switchEC-383, "Description"
Throttle control motorEC-396, "Description"
Throttle control motor relayEC-387, "Description"
Throttle position sensorEC-174, "Description"
Component Reference
Revision: May 2010 2011 Versa

MULTIPORT FUEL INJECTION SYSTEMEC-47
< FUNCTION DIAGNOSIS > [HR16DE]
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MULTIPORT FUEL INJECTION SYSTEM
System DiagramINFOID:0000000005929767
System DescriptionINFOID:0000000005929768
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.
JMBIA2193GB
Sensor
Input signal to ECMECM functionActuator
Crankshaft position sensor (POS) Engine speed*
3
Piston position
Fuel injection
& mixture ratio
controlFuel injector
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Intake air temperature sensor Intake air temperature
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch (M/T)
Transmission range switch (A/T) Gear position
Battery Battery voltage*
3
Knock sensor Engine knocking condition
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
EPS control unit Power steering operation*
2
ABS actuator and electric unit (control unit)
Vehicle speed*2
Combination meter
BCMAir conditioner ON signal*
2
Revision: May 2010 2011 Versa

EC-48
< FUNCTION DIAGNOSIS >[HR16DE]
MULTIPORT FUEL INJECTION SYSTEM
*2: This signal is sent to the ECM via the CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is
determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). T he amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from t he crankshaft position sensor (POS), camshaft position
sensor (PHASE) and the ma ss air flow sensor.
VARIOUS FUEL INJECTION I NCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.

• During warm-up
• When starting the engine
• During acceleration
• Hot-engine operation
• When selector lever is changed from N to D (A/T models)
• High-load, high-speed operation

• During deceleration
• During high engine speed operation
MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)
The mixture ratio feedback system prov ides the best air-fuel mixture ratio for driveability and emission control.
The three way catalyst (manifold) can better reduce CO, HC and NOx emissions. This system uses A/F sen-
sor 1 in the exhaust manifold to monitor whether the engine operation is rich or lean. The ECM adjusts the
injection pulse width according to the sensor voltage signal. For more information about A/F sensor 1, refer to
EC-185, "
Description". This maintains the mixture ratio within the range of stoichiometric (ideal air-fuel mix-
ture).
This stage is referred to as the closed loop control condition.
Heated oxygen sensor 2 is located downstream of the th ree way catalyst (manifold). Even if the switching
characteristics of A/F sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal from heated
oxygen sensor 2.
• Open Loop Control
The open loop system condition refers to when the ECM detects any of the following conditions. Feedback
control stops in order to maintain stabilized fuel combustion.
- Deceleration and acceleration
- High-load, high-speed operation
- Malfunction of A/F sensor 1 or its circuit
- Insufficient activation of A/F sensor 1 at low engine coolant temperature
- High engine coolant temperature
- During warm-up
- After shifting from N to D (A/T models)
- When starting the engine
MIXTURE RATIO SELF-LEARNING CONTROL
The mixture ratio feedback control system monitors t he mixture ratio signal transmitted from A/F sensor 1.
This feedback signal is then sent to the ECM. The ECM c ontrols the basic mixture ratio as close to the theoret-
ical mixture ratio as possible. However, the basic mi xture ratio is not necessarily controlled as originally
PBIB2793E
Revision: May 2010 2011 Versa

EC-50
< FUNCTION DIAGNOSIS >[HR16DE]
MULTIPORT FUEL INJECTION SYSTEM
Component Parts Location
INFOID:0000000006141219
1. Ignition coil (with power transistor) and spark plug 2. Intake valve timing control solenoid
valve 3. Refrigerant pressure sensor
4. Knock sensor 5. Fuel injector6. 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
Revision: May 2010 2011 Versa

MULTIPORT FUEL INJECTION SYSTEMEC-51
< FUNCTION DIAGNOSIS > [HR16DE]
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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
Revision: May 2010 2011 Versa