cooling NISSAN TEANA 2014 Repair Manual

SYSTEMEC-577
< SYSTEM DESCRIPTION > [VQ35DE]
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Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays in the IPDM E/R through CAN communication line.
ELECTRONIC CONTROLLED ENGINE MOUNT
ELECTRONIC CONTROLLED ENGINE
MOUNT : System DescriptionINFOID:0000000009462520
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
JMBIA0179GB
Cooling fan speed Cooling fan relay
123
Stop (OFF) OFF OFF OFF
Low (LOW) ON OFF OFF
Middle (MID) OFF ON OFF
High (HI) OFF ON ON
JMBIA1827GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-606
< SYSTEM DESCRIPTION >[VQ35DE]
DIAGNOSIS SYSTEM (ECM)
COOLING FANHI/MID/
LOW/OFF • The control condition of the cool-
ing fan (determined by ECM ac-
cording to the input signals) is
indicated.
HI: High speed operation
MID: Middle speed operation
LOW: Low speed operation
OFF: Stop
HO2S2 HTR (B1)
On/Off Indicates [On/Off] condition of heat-
ed oxygen sensor 2 heater deter-
mined by ECM according to the
input signals.
HO2S2 HTR (B2)
ALT DUTY SIG On/Off The control condition of the power
generation voltage variable control
(determined by ECM according to
the input signals) is indicated.
• On: Power generation voltage variable control is active.
• Off: Power generation voltage
variable control is inactive.
I/P PULLY SPD rpm Indicates the engine speed comput-
ed from the input speed sensor sig-
nal.
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/
CMPLT Displays the condition of idle air vol-
ume learning
• Yet: Idle Air Volume Learning has not been performed yet.
• Cmplt: Idle Air Volume Learning
has already been performed suc-
cessfully.
TRVL AFTER MIL km or
mile Distance traveled while MIL is acti-
vated.
ENG OIL TEMP °C or °F The engine oil temperature (deter-
mined by the signal voltage of the
engine oil temperature sensor) is
displayed.
VHCL SPEED SE km/h or
mph The vehicle speed computed from
the vehicle speed signal sent from
combination meter is displayed.
SET VHCL SPD km/h or
mph • The preset vehicle speed is dis-
played.
MAIN SW On/Off Indicates [On/Off] condition from
MAIN switch signal.
CANCEL SW On/Off Indicates [On/Off] condition from
CANCEL switch signal.
RESUME/ACC SW On/Off Indicates [On/Off] condition from
RESUME/ACCELERATE switch sig-
nal.
SET SW On/Off Indicates [On/Off] condition from
SET/COAST switch signal.
Monitored item Unit
Monitor Item Selec-
tion
Description Remarks
ECU IN-
PUT SIG- NALS MAIN-
SIG-
NALS
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DIAGNOSIS SYSTEM (ECM)EC-611
< SYSTEM DESCRIPTION > [VQ35DE]
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*: Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.
DTC WORK SUPPORT MODE
Test Item
FUEL PUMP RE-
LAY • Ignition switch: ON (Engine
stopped)
• Turn the fuel pump relay “ON” and “OFF” using CONSULT and
listen to operating sound. Fuel pump relay makes the operat-
ing sound. • Harness and connectors
• Fuel pump relay
VIAS S/V-1 • Ignition switch: ON
• Turn solenoid valve “ON” and “OFF” using CONSULT and listen
to operating sound. Solenoid valve makes the operating
sound. • Harness and connectors
• Solenoid valve
ENGINE
MOUNTING • Ignition switch: ON
• Turn electronic controlled engine mount “IDLE” and “TRVL” with
CONSULT. Electronic controlled engine mount
makes the operating sound. • Harness and connectors
• Electronic controlled engine mount
VIAS S/V-2 • Ignition switch: ON
• Turn solenoid valve “ON” and “OFF” using CONSULT and listen
to operating sound. Solenoid valve makes the operating
sound. • Harness and connectors
• Solenoid valve
IGNITION TIM-
ING • Engine: Return to the original
non-standard condition
• Timing light: Set
• Retard the ignition timing using
CONSULT. If malfunctioning symptom disap-
pears, see CHECK ITEM. Perform Idle Air Volume Learning.
POWER BAL-
ANCE • Engine: After warming up, idle the
engine.
• A/C switch OFF
• Selector lever: P or N position
• Cut off each injector signal one at a time using CONSULT. Engine runs rough or stops. • Harness and connectors
• Compression
• Fuel injector
• Power transistor
•Spark plug
• Ignition coil
VENT CON-
TROL/V • Ignition switch: ON (Engine
stopped)
• Turn solenoid valve “ON” and “OFF” with the CONSULT and lis-
ten to operating sound. Solenoid valve makes an operating
sound. • Harness and connectors
• Solenoid valve
V/T ASSIGN AN-
GLE • Engine: Return to the original
non-standard condition
• Change intake valve timing using
CONSULT. If malfunctioning symptom disap-
pears, see CHECK ITEM. • Harness and connectors
• Intake valve timing control sole- noid valve
COOLING FAN* • Ignition switch: ON
• Turn the cooling fan “HI”, “MID”, “LOW” and “OFF” using CON-
SULT. Cooling fan moves and stops.
• Harness and connectors
• Cooling fan motor
•IPDM E/R
TEST ITEM CONDITION JUDGMENT CHECK ITEM (REMEDY)
Test mode Test item Corresponding DTC No. Reference page
A/F SEN1 A/F SEN1(B1) P1276 P0130
EC-753
A/F SEN1(B2) P1286 P0150EC-753
EVAPORATIVE SYSTEMPURG FLOW P0441 P0441
EC-828PURG VOL CN/V P1444 P0443EC-833
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ECM
EC-615
< ECU DIAGNOSIS INFORMATION > [VQ35DE]
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INT/V TIM (B1)
• Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle
−5 - 5 °CA
2,000 rpm Approx. 0 - 30 °CA
INT/V TIM (B2) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle
−5 - 5 °CA
2,000 rpm Approx. 0 - 30 °CA
INT/V SOL(B1) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 0 - 2%
2,000 rpm Approx. 0 - 50%
INT/V SOL(B2) • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load Idle 0 - 2%
2,000 rpm Approx. 0 - 50%
VIAS S/V-1 • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load When revving engine up to 5,000 rpm
quickly Off
→On → Off
VIAS S/V-2 • Engine: After warming up
• Selector lever: P or N position
• Air conditioner switch: OFF
•No load When revving engine up to 5,000 rpm
quickly Off
→On → Off
AIR COND RLY Engine: After warming up, idle the
engine Air conditioner switch: OFF Off
Air conditioner switch: ON
(Compressor operates) On
ENGINE MOUNT Engine: After warming up Below 950 rpm IDLE
Above 950 rpm TRVL
FUEL PUMP RLY • For 1 second after turning ignition switch: ON
• Engine running or cranking On
Except above Off
VENT CONT/V Ignition switch: ON Off
THRTL RELAY Ignition switch: ON On
A/F S1 HTR(B1) Engine: After warming up, idle the engine
(More than 140 seconds after starting engine) 4 - 100%
A/F S1 HTR(B2) Engine: After warming up, idle the engine
(More than 140 seconds after starting engine) 4 - 100%
COOLING FAN • Engine: After warming up, idle the
engine
• Air conditioner switch: OFF Engine coolant temperature: 97
°C
(206 °F) or less OFF
Engine coolant temperature: Between
98 °C (208
°F) and 99 °C (210 °F) LOW
Engine coolant temperature: Between
100 °C (212 °F) and 104 °C (219 °F) MID
Engine coolant temperature: 105 °C
(221 °F) or more HI
HO2S2 HTR (B1) Engine speed: Below 3,600 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 load On
Engine speed: Above 3,600 rpm Off
Monitor Item Condition Values/Status
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EC-628
< ECU DIAGNOSIS INFORMATION >[VQ35DE]
ECM
DTC RELATED ITEM
Engine operating condi-
tion in fail-safe mode Detected items Remarks
Reference
page
Engine speed will not
rise more than 2,500 rpm
due to the fuel cut Malfunction indicator
lamp circuit When there is an open circuit on MIL circuit, the ECM cannot warn the
driver by illuminating MIL when there is malfunction on engine control
system.
Therefore, when electrical controlled throttle and part of ECM related
diagnoses are continuously detected as NG for 5 trips, ECM warns the
driver that engine control system malfunctions and MIL circuit is open
by means of operating the fail-safe function.
The fail-safe function also operates when above diagnoses except MIL
circuit are detected and demands the driver to repair the malfunction. EC-973
DTC No. Detected items Engine operating condition in fail-safe mode
P0011
P0021 Intake valve timing control The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
P0101
P0102
P0103 Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118 Engine coolant tempera-
ture sensor circuit Engine coolant temperature will be determined by ECM based on the following condition.
CONSULT displays the engine coolant temperature decided by ECM.
Condition Engine coolant temperature decided
(CONSULT display)
Just as ignition switch is turned ON
or START 40
°C (104 °F)
Approx 4 minutes or more after en-
gine starting 80
°C (176 °F)
Except as shown above 40 - 80
°C (104 - 176 °F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P2135 Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
Therefore, the acceleration will be poor.
P0196
P0197
P0198 Engine oil temperature
sensor Intake valve timing control does not function.
P0500 Vehicle speed sensor The cooling fan operates (Highest) while engine is running.
P0524 Engine oil pressure • ECM illuminates oil pressure warning lamp on the combination meter.
• Engine speed will not rise more than 4,000 rpm due to the fuel cut.
• Fail-safe is canceled when ignition switch OFF → ON.
P0605 ECM (When ECM calculation function is malfunctioning:) ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
ECM deactivates ASCD operation.
P0643 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P1805 Brake switch ECM controls the electric throttle control actuator by regulating the throttle opening to a small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
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HOW TO SET SRT CODEEC-693
< BASIC INSPECTION > [VQ35DE]
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>> GO TO 6.
6.PATTERN 2
1. Drive the vehicle. And depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then
release the accelerator pedal and keep it released for more than 10 seconds.
2. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again
NOTE:
• Checking the vehicle speed with GST is advised.
• When steady-state driving is performed again even afte r it is interrupted, each diagnosis can be conducted.
In this case, the time required for diagnosis may be extended.
>> GO TO 7.
7.PATTERN 3
• Operate vehicle following the driving pattern shown in the figure.
• Release the accelerator pedal during deceleration of vehicle speed
from 90 km/h (56 MPH) to 0 km/h (0 MPH).
>> GO TO 8.
8.PATTERN 4
• Operate vehicle, following the driving pattern shown in the figure.
- Drive the vehicle in a proper gear at 60 km/h (38 MPH) and main-
tain the speed.
- Release the accelerator pedal fully at least 5 seconds.
- Repeat the above two steps at least 5 times.
>> GO TO 9.
9.PATTERN 5
• The accelerator pedal must be held very steady during steady-state driving.
• If the accelerator pedal is moved, the test must be conducted again.
>> GO TO 10.
10.PATTERN 6
• Cool down the engine so that the engine c oolant temperature lowers between 15 – 35°C (59 – 95 °F).
CAUTION:
Never turn the ignition switch ON while cooling down the engine.
• Engine coolant temperature at engine start is between 15 – 35 °C (59 – 95 °F) and has lowered 45 °C (113 °F)
or more since the latest engine stop.
>> GO TO 11.
11 .CHECK SRT STATUS
With CONSULT
PBIB2244E
JSBIA0160GB
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P0506 ISC SYSTEMEC-869
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0506 ISC SYSTEM
DescriptionINFOID:0000000009462717
The ECM controls the engine idle speed to a specified leve
l through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric thrott le control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idli ng speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is t he lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration and engine load (air conditioner, power steering and cooling fan
operation, etc.).
DTC LogicINFOID:0000000009462718
DTC DETECTION LOGIC
NOTE:
If DTC P0506 is displayed with ot her DTC, first perform the trouble diagnosis for the other DTC.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, always perform the following before conduct-
ing the next test.
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.
If the target idle speed is out of the specified value, perform EC-683, "Work Procedure"
, before con-
ducting DTC CONFIRMATION PROCEDURE.
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
• Always perform the test at a temperature above −10 °C(14 °F).
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Restart engine and run it for at least 1 minute at idle speed.
6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-869, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462719
1.CHECK INTAKE AIR LEAKAGE
1. Start engine and let it idle.
2. Listen for an intake air leakage after the mass air flow sensor.
Is intake air leakage detected?
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0506 Idle speed control sys-
tem RPM lower than ex-
pected The idle speed is less than the target idle speed
by 100 rpm or more. • Electric throttle control actuator
• Intake air leakage
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P0507 ISC SYSTEMEC-871
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0507 ISC SYSTEM
DescriptionINFOID:0000000009462720
The ECM controls the engine idle speed to a specified leve
l through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric thrott le control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idli ng speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is t he lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration and engine load (air conditioner, power steering and cooling fan
operation, etc.).
DTC LogicINFOID:0000000009462721
DTC DETECTION LOGIC
NOTE:
If DTC P0507 is displayed with ot her DTC, first perform the trouble diagnosis for the other DTC.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, always perform the following before conduct-
ing the next test.
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.
If the target idle speed is out of the specified value, perform EC-683, "Work Procedure"
, before con-
ducting DTC Confirmation Procedure.
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
• Always perform the test at a temperature above −10 °C(14 °F).
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Restart engine and run it for at least 1 minute at idle speed.
6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-871, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462722
1.CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected correctly.
Is the inspection result normal?
YES >> GO TO 2.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0507 Idle speed control sys-
tem RPM higher than
expected The idle speed is more than the target idle
speed by 200 rpm or more. • Electric throttle control actuator
• Intake air leakage
• PCV system
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EC-892
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P1217 ENGINE OVER TEMPERATURE
P1217 ENGINE OVER TEMPERATURE
DTC LogicINFOID:0000000009462749
DTC DETECTION LOGIC
NOTE:
• If DTC P1217 is displayed with DTC UXXXX, first perform the tr ouble diagnosis for DTC UXXXX.
• If DTC P1217 is displayed with DTC P0607, first pe rform the trouble diagnosis for DTC P0607. Refer
to EC-884, "DTC Logic"
.
If the cooling fan or another component in the coo ling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnorma lly high temperature condition, a malfunction is
indicated.
CAUTION:
When a malfunction is indicated, be su re to replace the coolant. Refer to CO-35, "System Inspection"
.
Also, replace the engine oil. Refer to MA-27, "ENGINE OIL : Changing Engine Oil"
.
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to MA-12, "FOR USA AND CANADA : Engine Cool-
ant Mixture Ratio".
2. After refilling coolant, run engine to en sure that no water-flow noise is emitted.
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-892, "Component Function Check"
.
NOTE:
Use component function check to check the overall functi on of the cooling fan. During this check, a DTC might
not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-893, "Diagnosis Procedure"
.
Component Function CheckINFOID:0000000009462750
1.PERFORM COMPONENT FUNCTION CHECK-I
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
DTC No. Trouble diagnosis name
(Trouble diagnosis con-
tent) DTC detecting condition Possible cause
P1217 ENG OVER TEMP
[Engine over tempera-
ture (Overheat)] • Cooling fan does not operate properly (Over-
heat).
• Cooling fan system does not operate properly
(Overheat).
• Engine coolant was not added to the system using the proper filling method.
• Engine coolant is not within the specified
range. • Harness or connectors
(Cooling fan circuit is open or shorted.)
•IPDM E/R
• Cooling fan motor
•Radiator hose
•Radiator
•Radiator cap
• Reservoir tank
• Water pump
•Thermostat
• Water control valve
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P1217 ENGINE OVER TEMPERATUREEC-893
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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Check the coolant level in the reservoir tank and radiator.
Allow engine to cool befo re checking coolant level.
Is the coolant level in the reservoir tank and/or radiator below the
proper range?
YES >> Proceed to EC-893, "Diagnosis Procedure".
NO >> GO TO 2.
2.PERFORM COMPONENT FUNCTION CHECK-II
Confirm whether customer filled the coolant or not.
Did customer fill the coolant?
YES >> Proceed to EC-893, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM COMPONENT FUNCTION CHECK-III
With CONSULT
1. Turn ignition switch ON.
2. Perform “FAN DUTY CONTROL” in “ACTI VE TEST” mode of “ENGINE” using CONSULT.
3. Check that cooling fan speed varies according to the percentage.
Without CONSULT
1. Activate IPDM E/R auto active test and check cooling fan motors operation. Refer to PCS-8, "Diagnosis
Description".
2. Check that cooling fan operates.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-893, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462751
1.CHECK COOLING FAN OPERATION
With CONSULT
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TE ST” mode of “ENGINE” using CONSULT.
3. Check that cooling fans-1 and -2 operate at each speed (LOW/MID/HI).
Without CONSULT
1. Activate IPDM E/R auto active test and check cooling fan motors operation. Refer to PCS-8, "Diagnosis
Description".
2. Check that cooling fans-1 and -2 operate at each speed (Low/Middle/High).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Proceed to EC-953, "Diagnosis Procedure"
.
2.CHECK COOLING SYSTEM FOR LEAK-I
Check cooling system for leak. Refer to CO-35, "System Inspection"
.
Is leakage detected?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK COOLING SYSTEM FOR LEAK-II
Check the following for leak.
• Hose (Refer to CO-35, "System Inspection"
.)
• Radiator (Refer to CO-35, "System Inspection"
.)
• Water pump (Refer to CO-35, "System Inspection"
.)
SEF621W
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM