cool fan diagnosis NISSAN TIIDA 2011 Service Owner's Manual

COOLING FAN CONTROLEC-77
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Component DescriptionINFOID:0000000005929783
1. Cooling fan motor harness connec-
tor 2. Crankshaft position sensor 3. Stop lamp switch
4. Brake pedal 5. Accelerator pedal position sensor
harness connector 6. 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
Component Reference
Camshaft position sensor (PHASE) EC-272, "
Description"
Crankshaft position sensor (POS)EC-267, "Description"
Cooling fan motorEC-71, "System Description"
Revision: May 2010 2011 Versa

EC-78
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COOLING FAN CONTROL
Engine coolant temperature sensor
EC-168, "Description"
Refrigerant pressure sensorEC-460, "Description"
Component Reference
Revision: May 2010 2011 Versa

EVAPORATIVE EMISSION SYSTEMEC-83
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Component Parts LocationINFOID:0000000006141215
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

EVAPORATIVE EMISSION SYSTEMEC-87
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Component DescriptionINFOID:0000000005929787
1. Cooling fan motor harness connec-
tor 2. Crankshaft position sensor 3. Stop lamp switch
4. Brake pedal 5. Accelerator pedal position sensor
harness connector 6. 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
Component Reference
A/F sensor 1 EC-185, "
Description"
Accelerator pedal position sensorEC-402, "Description"
Camshaft position sensor (PHASE)EC-272, "Description"
Crankshaft position sensor (POS)EC-267, "Description"
Revision: May 2010 2011 Versa

EC-90
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INTAKE VALVE TIMING CONTROL
Component Parts Location
INFOID:0000000006141214
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-94
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INTAKE VALVE TIMING CONTROL
Component Description
INFOID:0000000005929791
1. Cooling fan motor harness connec- tor 2. Crankshaft position sensor
3. Stop lamp switch
4. Brake pedal 5. Accelerator pedal position sensor
harness connector 6. 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
Component Reference
Camshaft position sensor (PHASE) EC-272, "
Description"
Crankshaft position sensor (POS)EC-267, "Description"
Engine coolant temperature sensorEC-168, "Description"
Intake valve timing control solenoid valveEC-89, "System Description"
Revision: May 2010 2011 Versa

EC-110
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DIAGNOSIS SYSTEM (ECM)
IGNITION SW ON/OFF• Indicates [ON/OFF] condition from ignition switch sig-
nal.
HEATER FAN SW ON/OFF • Indicates [ON/OFF] condition from the heater fan
switch signal.
BRAKE SW ON/OFF• Indicates [ON/OFF] condition from the stop lamp
switch signal.
INJ PULSE-B1 msec • Indicates the actual fuel injection pulse width compen-
sated by ECM according to the input signals. • When the engine is stopped, a certain
computed value is indicated.
IGN TIMING BTDC• Indicates the ignition timing computed by ECM ac-
cording to the input signals. • When the engine is stopped, a certain
value is indicated.
CAL/LD VALUE %• “Calculated load value” indicates the value of the cur-
rent air flow divided by peak air flow.
MASS AIRFLOW g/s • Indicates the mass air flow computed by ECM accord-
ing to the signal voltage of the mass air flow sensor.
PURG VOL C/V % • Indicates the EVAP canister purge volume control so-
lenoid valve control value computed by the ECM ac-
cording to the input signals.
• The opening becomes larger as the value increases.
INT/V TIM(B1) °CA • Indicates [ °CA] of intake camshaft advance angle.
INT/V SOL(B1) %• The control value of the intake valve timing control so-
lenoid valve (determined by ECM according to the in-
put signals) is indicated.
• The advance angle becomes larger as the value in-
creases.
AIR COND RLY ON/OFF • The air conditioner relay control condition (determined
by ECM according to the input signals) is indicated.
FUEL PUMP RLY ON/OFF • Indicates the fuel pump relay control condition deter-
mined by ECM according to the input signals.
VENT CONT/V ON/OFF • The control condition of the EVAP canister vent control
valve (determined by ECM according to the input sig-
nals) is indicated.
ON: Closed
OFF: Open
THRTL RELAY ON/OFF • Indicates the throttle contro
l motor relay control condi-
tion determined by the ECM according to the input sig-
nals.
COOLING FAN HI/LOW/
OFF• Indicates the condition of the cooling fan (determined
by ECM according to the input signals).
HI: High speed operation
LOW: Low speed operation
OFF: Stop
HO2S2 HTR (B1) ON/OFF • Indicates [ON/OFF] condition of heated oxygen sen-
sor 2 heater determined by ECM according to the in-
put signals.
I/P PULLY SPD rpm • Indicates the engine speed computed from the prima-
ry sped sensor signal.
VEHICLE SPEED km/h or
mph • The vehicle speed computed from the vehicle speed
signal sent from TCM is displayed.
IDL A/V LEARN YET/CM-
PLT • Display the condition of Idle Air Volume Learning
YET: Idle air volume learning has not been performed
yet.
CMPLT: Idle air volume learning has already been per-
formed successfully.
TRVL AFTER MIL km or
mile • Distance traveled while MIL is activated.
Monitored item Unit
DescriptionRemarks
Revision: May 2010 2011 Versa

DIAGNOSIS SYSTEM (ECM)EC-111
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NOTE:
Any monitored item that does not match the vehicle
being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
A/F S1 HTR(B1) %• Air fuel ratio (A/F) sensor 1 heater control value com-
puted by ECM according to the input signals.
• The current flow to the heater becomes larger as the value increases.
AC PRESS SEN V • The signal voltage from the refrigerant pressure sen-
sor is displayed.
A/F ADJ-B1 —• Indicates the correction of factor stored in ECM. The
factor is calculated from the difference between the
target air-fuel ratio stored in ECM and the air-fuel ratio
calculated from A/F sensor 1 signal.
HO2 S2 DIAG2(B1) INCMP/
CMPLT NOTE:
The item is indicated, but not used.
A/F SEN1
DIAG2(B1) INCMP/
CMPLT NOTE:
The item is indicated, but not used.
Monitored item Unit
DescriptionRemarks
TEST ITEMCONDITION JUDGMENTCHECK ITEM (REMEDY)
FUEL INJECTION • Engine: Return to the original
trouble condition
• Change the amount of fuel injec-
tion using CONSULT-III. If trouble symptom disappears, see
CHECK ITEM.
• Harness and connectors
• Fuel injector
• Air fuel ratio (A/F) sensor 1
IGNITION TIMING • Engine: Return to the original
trouble condition
• Timing light: Set
• Retard the ignition timing using
CONSULT-III. If trouble symptom disappears, see
CHECK ITEM.
• Perform Idle Air Volume Learning.
POWER BALANCE • Engine: After warming up, idle
the engine.
• A/C switch OFF
• Selector lever: P or N position (A/ T), Neutral position (M/T)
• Cut off each fuel injector signal one at a time using CONSULT-
III. Engine runs rough or dies.
• Harness and connectors
• Compression
• Fuel injector
• Power transistor
• Spark plug
• Ignition coil
COOLING FAN* • Ignition switch: ON
• Turn the cooling fan “LOW”, “HI”
and “OFF” using CONSULT-III. Cooling fan moves and stops.
• Harness and connectors
• IPDM E/R (Cooling fan relay)
• Cooling fan motor
ENG COOLANT
TEMP • Engine: Return to the original
trouble condition
• Change the engine coolant tem-
perature using CONSULT-III. If trouble symptom disappears, see
CHECK ITEM. • Harness and connectors
• Engine coolant temperature sen-
sor
• Fuel injector
FUEL PUMP RELAY • Ignition switch: ON (Engine
stopped)
• Turn the fuel pump relay “ON”
and “OFF” using CONSULT-III
and listen to operating sound. Fuel pump relay makes the operat-
ing sound.
• Harness and connectors
•Fuel pump relay
PURG VOL CONT/V • Engine: After warming up, run
engine at 1,500 rpm.
• Change the EVAP canister purge volume control solenoid
valve opening percent using
CONSULT-III. Engine speed changes according
to the opening percent.
• Harness and connectors
• Solenoid valve
FUEL/T TEMP SEN • Change the fuel tank temperature using CONSULT-III.
Revision: May 2010 2011 Versa

EC-112
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DIAGNOSIS SYSTEM (ECM)
*: Leaving cooling fan OFF with CONSULT-III whil
e engine is running may cause the engine to overheat.
DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
• For items whose SRT codes are set, “CMPLT” is displayed on the CONSULT-III screen; for items whose
SRT codes are not set, “INCMP” is displayed.
• “SRT STATUS” provides the presence or absence of permanent DTCs stored in ECM memory.
PERMANENT DTC STATUS Mode
How to display permanent DTC status
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Select “PERMANENT DTC ST ATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT-III.
NOTE:
Permanent DTCs stored in ECM memory are displayed on the CONSULT-III screen to show if a driving
pattern required for erasing permanent DTCs is complete (CMPLT) or incomplete (INCMP).
CAUTION:
Since the “PERMANENT DTC STATUS” screen displ ays the previous trip information, repeat the
following twice to update the in formation: “Ignition switch OFF” , “Wait for more than 10 seconds”
and “Ignition switch ON”.
NOTE:
This mode is not used in regions that permanent DTCs are not regulated by law.
SRT WORK SUPPORT Mode
This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.
PERMANENT DTC WORK SUPPORT Mode
This mode enables a technician to drive a vehicle to comp lete the driving pattern that is required for erasing
permanent DTC.
NOTE:
This mode is not used in regions that permanent DTCs are not regulated by law.
VENT CONTROL/V• Ignition switch: ON (Engine
stopped)
• Turn solenoid valve “ON” and “OFF” using the CONSULT-III
and listen to operating sound. Solenoid valve makes an operating
sound.
• Harness and connectors
• Solenoid valve
V/T ASSIGN ANGLE • Engine: Return to the original
trouble condition
• Change intake valve timing us- ing CONSULT-III. If trouble symptom disappears, see
CHECK ITEM.
• Harness and connectors
• Intake valve timing control sole-
noid valve
TEST ITEM
CONDITION JUDGMENT CHECK ITEM (REMEDY)
JSBIA0062GB
Revision: May 2010 2011 Versa

P0128 THERMOSTAT FUNCTIONEC-183
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P0128 THERMOSTAT FUNCTION
DTC LogicINFOID:0000000005929872
DTC DETECTION LOGIC
NOTE:
If DTC P0128 is displayed with DTC P0300, P0301, P0302, P0303 or P0304, first perform the trouble
diagnosis for DTC P0300, P0301,
P0302, P0303, P0304. Refer to EC-257, "
DTC Logic".
Engine coolant temperature has not risen enough to open the thermostat even though the engine has run long
enough.
This is due to a leak in the seal or the thermostat stuck open.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
TESTING CONDITION:
• For best results, perform at ambient temperature of –10 °C (14° F) or higher.
• For best results, perform at engine coolant temperature of –10 °C (14° F) to 56 °C (133° F).
• Before performing the following pro cedure, do not fill with the fuel.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Turn A/C switch OFF.
2. Turn blower fan switch OFF.
3. Turn ignition switch ON.
4. Select “COOLAN TEMP/S” in “DAT A MONITOR” mode with CONSULT-III.
5. Check the indication of “COOLAN TEMP/S”
If it is below 56 °C (133 °F), go to following step.
If it is above 56 °C (133° F), cool down the engine to less than 56° C (133°F). Then go to next steps.
6. Start engine.
7. Drive vehicle for 10 consecutive minutes under the following conditions.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “COOLAN TEMP/S” indication increases to more than 75 °C (167° F) within 10 minutes, turn igni-
tion switch OFF because the test result will be OK.
8. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES >> Go to EC-183, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000005929873
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-179, "
Component Inspection".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0128 Thermostat function The engine coolant temperature does not
reach to specified temperature even though
the engine has run long enough. •Thermostat
• Leakage from sealing portion of thermostat
• Engine coolant temperature sensor
VHCL SPEED SE
More than 56km/h (35MPH)
Revision: May 2010 2011 Versa