coolant NISSAN TEANA 2014 Service Manual

EC-424
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1217 ENGINE OVER TEMPERATURE
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-424, "Diagnosis Procedure".
NO >> GO TO 2.
2.PERFORM COMPONENT FUNCTION CHECK-2
Confirm whether customer filled the coolant or not.
Did customer fill the coolant?
YES >> Proceed to EC-424, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM COMPONENT FUNCTION CHECK-3
With CONSULT
1. Turn ignition switch ON.
2. Perform “FAN DUTY CONTROL” in “ACTIV E 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-424, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462354
1.CHECK COOLING FAN OPERATION
With CONSULT
1. Turn ignition switch ON.
2. Perform “FAN DUTY CONTROL” in “ACTIV E 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 >> GO TO 2.
NO >> Proceed to EC-499, "Diagnosis Procedure"
.
2.CHECK COOLING SYSTEM FOR LEAK-1
Check cooling system for leak. Refer to CO-11, "System Inspection"
.
Is leakage detected?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK COOLING SYSTEM FOR LEAK-2
Check the following for leak.
• Hose (Refer to CO-11, "System Inspection"
.)
• Radiator (Refer to CO-17, "Inspection"
.)
• Water pump (Refer to CO-20, "Removal and Installation"
.)
SEF621W
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P1217 ENGINE OVER TEMPERATUREEC-425
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
>> Repair or replace malfunctioning part.
4.CHECK RADIATOR CAP
Check radiator cap. Refer to CO-11, "System Inspection"
.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace radiator cap. Refer to CO-16, "Exploded View"
.
5.CHECK THERMOSTAT
Check thermostat. Refer to CO-22, "Removal and Installation"
.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace thermostat. Refer to CO-22, "Removal and Installation"
.
6.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-244, "Component Inspection"
.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace engine coolant temperature sensor. Refer to CO-24, "Exploded View"
.
7.OVERHEATING CAUSE ANALYSIS
If the cause cannot be isolated, check the CO-9, "Troubleshooting Chart"
.
>> INSPECTION END
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-494
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P2610 ECM INTERNAL TIMER
P2610 ECM INTERNAL TIMER
DescriptionINFOID:0000000009462425
This ECM contains a timer and measures time betw
een an ignition switch OFF and the next ignition switch
ON. This enables the judging of the state of engine cooling at an engine start.
DTC LogicINFOID:0000000009462426
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
It is necessary to erase permanent DTC?
YES >> GO TO 4.
NO >> GO TO 2.
2.PRECONDITIONING
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.
TESTING CONDITION:
Before performing the following pr ocedure, confirm that battery voltage is 12 V or more under ignition
switch OFF condition.
>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Turn ignition switch ON and wait at least 190 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-495, "Diagnosis Procedure".
NO >> INSPECTION END
4.PRECONDITIONING
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.
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is 12 V or more under igni-
tion switch OFF condition.
• Before performing the followin g procedure, check that fuel level is between 2/8 and 7/8.
>> GO TO 5.
5.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Turn ignition switch ON and wait at least 190 seconds.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P2610 ECM/PCM INTERNAL ENG
OFF TIMER
(ECM/PCM internal engine off
timer performance) • ECM internal engine off timer is malfunction-
ing.
• The time calculated by ECM based on a de- scent allowance of engine coolant tempera-
tures during ignition switch OFF is extremely
shorter than the time counted by the Engine
internal OFF timer. ECM
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P2610 ECM INTERNAL TIMEREC-495
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-495, "Diagnosis Procedure".
NO >> GO TO 6.
6.PERFORM DTC CONFIRMATION PROCEDURE-II
CAUTION:
To start this self-diagnosis, the cond itions listed bellow are required to be satisfied. Perform the fol-
lowing steps to satisfy the conditions.
• Engine coolant temperature decrease by 55 °C (131 °F) or more during the time between an ignition
switch OFF (after engine warm-up) and the second ignition switch ON.
• A fuel temperature at the seco nd ignition switch ON is −5 °C (23 °F) or more and less than 35 °C (95 °F).
• The temperature difference between engine coolant and fuel is 5°C (41 °F) or more.
NOTE:
This self-diagnosis is not performed if the distance traveled is extremely short.
1. Turn ignition switch ON.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and soak the vehicle for at least 12 hours. CAUTION:
• Never turn ON the ignition switch during soaking.
• Never open the fuel filler cap an d perform refueling during soaking.
4. Turn ignition switch ON and wait at least 190 seconds.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-495, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462427
1.CHECK SELF-DIAGNOSTIC RESULT
check that DTCs related to the fuel sy stem and the cooling system are not detected.
Is the inspection result normal?
YES >> Check the DTC. Refer to EC-77, "CONSULT Function".
NO >> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Erase DTC.
2. Perform DTC Confirmation Procedure again. Refer to EC-494, "DTC Logic"
.
Is the 1st trip DTC P2610 displayed again?
YES >> Replace ECM. Refer to EC-540, "Removal and Installation".
NO >> INSPECTION END
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-528
< SYMPTOM DIAGNOSIS >[QR25DE]
ENGINE CONTROL SYSTEM
Mass air flow sensor circuit
1
12 2
222 2 EC-228,
EC-232
Intake air temperature sensor circuit EC-240,
EC-241
Engine coolant temperature sensor circuit
333
EC-245,
EC-251
Air fuel ratio (A/F) sensor 1 circuit EC-258
,
EC-262
,
EC-265
,
EC-289
,
EC-468
Throttle position sensor circuit
22EC-248
,
EC-315
,
EC-426
,
EC-427
,
EC-488
Accelerator pedal position sensor circuit 3 2 1 EC-482
,
EC-485
,
EC-491
Heated oxygen sensor 2 circuit 6 6 6 6 5 EC-268
,
EC-276
,
EC-284
Knock sensor circuit 2 3 EC-324
Engine oil temperature sensor circuit 4 2 3EC-311,
EC-312
Engine oil pressure sensor circuit 4 4 3 3 3 3 EC-388,
EC-392
Crankshaft position sensor (POS) circuit 2 2 EC-326
Camshaft position sensor (PHASE) circuit 3 2EC-329
Vehicle speed signal circuit 2 3 3 3EC-380
ECM 22333333333EC-400
,
EC-401
,
EC-402
,
EC-404
Intake valve timing control solenoid valve cir-
cuit 32 13223 3 EC-209,
EC-221
Intake valve timing intermediate lock control
solenoid valve circuit EC-394
SYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ENGINE CONTROL SYSTEMEC-531
< SYMPTOM DIAGNOSIS > [QR25DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
1 - 6: The numbers refer to the order of inspection. Va l v e
mecha-
nism Timing chain
55555 55 5 EM-62
Camshaft
EM-47
Intake valve timing controlEM-62
Intake valve
3EM-78
Exhaust valve
Exhaust Exhaust manifold/Tube/Muf- fler/Gasket 55555 55 5 EM-33
, EX-6
Three way catalyst
Lubrica-
tion Oil pan/Oil strainer/Oil pump/
Oil filter/Oil gallery/Oil cooler 55555 55 5 EM-36
,
LU-9,
LU-11
, LU-7,
LU-17
Oil level (Low)/Filthy oil LU-9
Cooling Radiator/Hose/Radiator filler
cap
55555 55 45 CO-17
Thermostat 5
CO-22
Water pumpCO-20
Water galleryCO-7
Cooling fan
5CO-18
Coolant level (Low)/Contami-
nated coolant CO-11
NVIS (NISSAN Vehicle Immobilizer Sys-
tem — NATS) 11
SEC-63
SYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code A AAB AC AD AE AF AG AH AJ AK AL AM HA
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PREPARATIONEC-547
< PREPARATION > [VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
NP
O
Fuel filler cap adapter
i.e.: (MLR-8382) Checks fuel tank vacuum relief valve opening
pressure
Socket wrench Removes and installs engine coolant temperature sensor. Refer to CO-51, "Exploded View"
.
Oxygen sensor thread
cleaner
i.e.: (J-43897-18)
(J-43897-12) Reconditions the exhaust system threads before
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for Zirco-
nia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for Tita-
nia Oxygen Sensor
Anti-seize lubricant
i.e.: (Permatex
TM
133AR or equivalent
meeting MIL specifica-
tion MIL-A-907) Lubricates oxygen sensor thread cleaning tool
when reconditioning exhaust system threads.
Tool name
(TechMate No.) Description
S-NT815
S-NT705
AEM488
S-NT779
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-550
< SYSTEM DESCRIPTION >[VQ35DE]
COMPONENT PARTS
EXHAUST
BODY
8.Ignition coil (with power transistor)
(bank 2) EC-560, "Ignition Coil (With Power Transistor)"
9.Camshaft position sensor (PHASE)
(bank 2) EC-554, "Camshaft Posi
tion Sensor (PHASE)"
10. Engine coolant temperature sensor EC-556, "Engine Coolant Temperature Sensor"
11. Fuel injector (bank 1)EC-558, "Fuel Injector"
12. Knock sensor (bank 1)EC-560, "Knock Sensor"
13. Knock sensor (bank 2)EC-560, "Knock Sensor"
14. Fuel injector (bank 2)EC-558, "Fuel Injector"
15. Engine oil temperature sensorEC-557, "Engine Oil Temperature Sensor"
No. Component Function
JPBIA4687ZZ
No. Component Function
1. Air fuel ratio (A/F ) sensor 1 (bank 2) EC-552, "Air Fuel Ratio (A/F) Sensor 1"
2. Heated oxygen sensor 2 (bank 2) EC-559, "Heated Oxygen Sensor 2"
3. Heated oxygen sensor 2 (bank 1)EC-559, "Heated Oxygen Sensor 2"
4. Air fuel ratio (A/F) sensor 1 (bank 1) EC-552, "Air Fuel Ratio (A/F) Sensor 1"
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-554
< SYSTEM DESCRIPTION >[VQ35DE]
COMPONENT PARTS
Camshaft Position Sensor (PHASE)
INFOID:0000000009462485
The camshaft position sensor (P HASE) senses the retraction of
intake camshaft to identify a particular cylinder. The camshaft posi-
tion sensor (PHASE) sens es the piston position.
When the crankshaft position sensor (POS) system becomes inoper-
ative, the camshaft position sensor (PHASE) provides various con-
trols of engine parts instead, utilizing timing of cylinder identification
signals.
The sensor consists of a permanent magnet and Hall IC.
When engine is running, the high and low parts of the teeth cause
the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor changes.
ECM receives the signals as shown in the figure.
Cooling FanINFOID:0000000009462486
DESCRIPTION
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 4-step control [HIGH/MIDDLE/LOW/OFF].
Refer to EC-575, "COOLING FAN CONTRO L : System Description"
for cooling fan operation.
COOLING FAN MOTOR RELAY
Power supply for the cooling fan motor is provided via cooling fan motor relay.
Crankshaft Position Sensor (POS)INFOID:0000000009462487
The crankshaft position sensor (POS) is located on the oil pan facing
the gear teeth (cogs) of the signal pl ate. It detects the fluctuation of
the engine revolution.
The sensor consists of a permanent magnet and Hall IC.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
The ECM receives the voltage signal and detects the fluctuation of
the engine revolution.
JMBIA0064ZZ
JMBIA0001GB
JMBIA0062ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-556
< SYSTEM DESCRIPTION >[VQ35DE]
COMPONENT PARTS
The throttle position sensor has
two sensors. These sensors are a
kind of potentiometers which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. In addition,
these sensors detect the opening and closing speed of the throttle
valve and feed the voltage signals to the ECM. The ECM judges the
current opening angle of the throttle valve from these signals and the
ECM controls the throttle control motor to make the throttle valve
opening angle properly in response to driving condition.
Electronic Controlled Engine MountINFOID:0000000009462490
In the idle range, ECM turns OFF the electronically- controlled engine mount control solenoid valve and applies
manifold pressure to the electronically-controlled engi ne mount. This decreases damping force of the electron-
ically-controlled engine mount and absorbs vibrations trav eling from the engine to the body for improving the
quietness.
In the driving range, ECM turns ON the electronicall y-controlled engine mount control solenoid valve and cuts
manifold pressure applied on the electronically-controlled engine mount. This increases damping force of the
electronically-controlled engine mount and r educes vibrations generated during driving.
Engine Coolant Temperature SensorINFOID:0000000009462491
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the engine coolant
temperature input. The sensor uses a thermistor which is sensitive to
the change in temperature. The elec trical resistance of the ther-
mistor decreases as temperature increases.

*: These data are reference values and are measured between ECM terminals.
PBIB0145E
SEF594K
Engine coolant temperature [° C ( °F)] Vol tag e* (V)
Resistance (k
Ω)
–10 (14) 4.4 7.0 - 11.4 20 (68) 3.5 2.37 - 2.63
50 (122) 2.2 0.68 - 1.00
90 (194) 0.9 0.236 - 0.260
SEF012P
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM