2008 NISSAN TEANA coolant temperature

EC-250
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1217 ENGINE OVER TEMPERATURE
P1217 ENGINE OVER TEMPERATURE
DTC LogicINFOID:0000000003856718
DTC DETECTION LOGIC
NOTE:
If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-135, "
DTC Logic".
If DTC P1217 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC Logic".
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
CAUTION:
When a malfunction is indicated, always replace the coolant. Refer to CO-8, "
Draining". Also, replace
the engine oil. Refer to LU-8, "
Draining".
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Always use
coolant with the proper mixture ratio. Refer to MA-12, "
Engine Coolant Mixture Ratio".
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-250, "
Component Function Check".
NOTE:
Use component function check to check the overall function of the cooling fan. During this check, a DTC might
not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-251, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000003856719
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 DTC detecting condition Possible cause
P1217Engine over tempera-
ture (Overheat) Cooling fan does not operate properly (Over-
heat).
 Cooling fan system does not operate proper-
ly (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
(The cooling fan circuit is open or short-
ed.)
 IPDM E/R (Cooling fan relays)
 Cooling fan motor
Radiator hose
Radiator
Radiator cap
 Water pump
Thermostat

P1217 ENGINE OVER TEMPERATURE
EC-251
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
Is the coolant level in the reservoir tank and/or radiator below the
proper range?
YES >> Go to EC-251, "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 >> Go to EC-251, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM COMPONENT FUNCTION CHECK-III
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III.
3. Check that cooling fan motors-1 and -2 operate at each speed (LOW/MID/HI).
Without CONSULT-III
Perform IPDM E/R auto active test and check cooling fan motors operation, refer to PCS-11, "
Diagnosis
Description".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-251, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856720
1.CHECK COOLING FAN OPERATION
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III.
3. Check that cooling fans-1 and -2 operate at each speed (LOW/MID/HI).
Without CONSULT-III
1. Perform IPDM E/R auto active test and check cooling fan motors operation, refer to PCS-11, "
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 >> Go to EC-324, "
Diagnosis Procedure".
2.CHECK COOLING SYSTEM FOR LEAK-I
Check cooling system for leak. Refer to CO-8, "
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
 Radiator
 Water pump
SEF621W

EC-252
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1217 ENGINE OVER TEMPERATURE
>> Repair or replace malfunctioning part.
4.CHECK RADIATOR CAP
Check radiator cap. Refer to CO-12, "
RADIATOR CAP : Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace radiator cap.
5.CHECK THERMOSTAT
Check thermostat. Refer to CO-24, "
Inspection".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace thermostat
6.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-158, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace engine coolant temperature sensor.
7.CHECK MAIN 12 CAUSES
If the cause cannot be isolated, check the following.
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (56 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to CO-3, "
TroubleshootingChart". Engine Step Inspection item Equipment Standard Reference page
OFF 1  Blocked radiator
 Blocked condenser
 Blocked radiator grille
 Blocked bumper Visual No blocking —
2  Coolant mixture  Coolant testerMA-11, "
Fluids and Lubricants"
3  Coolant level  Visual Coolant up to MAX level in
reservoir tank and radiator
filler neckCO-8, "Inspection"
4  Radiator cap  Pressure testerCO-12, "RADIATOR CAP : Inspection"
ON*25  Coolant leaks  Visual No leaksCO-8, "Inspection"
ON*26  Thermostat  Touch the upper and
lower radiator hosesBoth hoses should be hotCO-24, "Inspection"
ON*17  Cooling fan  CONSULT-III OperatingEC-324, "Component
Function Check"
OFF 8  Combustion gas leak  Color checker chemical
tester 4 Gas analyzerNegative —
ON*
39  Coolant temperature
gauge Visual Gauge less than 3/4 when
driving—
 Coolant overflow to res-
ervoir tank Visual No overflow during driving
and idlingCO-8, "
Inspection"
OFF*410  Coolant return from res-
ervoir tank to radiator Visual Should be initial level in
reservoir tankCO-8, "Inspection"
OFF 11  Cylinder head  Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)EM-104, "Inspection"
12  Cylinder block and pis-
tons Visual No scuffing on cylinder
walls or pistonEM-119, "Inspection"

EC-324
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
COOLING FAN
COOLING FAN
DescriptionINFOID:0000000003856827
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].
COOLING FAN MOTOR
The cooling fan operates at each speed when the current flows in the cooling fan motor as per the following.
The cooling fan operates at low (LOW) speed when cooling fan motors-1 and -2 are circuited in series under
the middle speed condition.
Refer to EC-60, "
System Diagram".
Component Function CheckINFOID:0000000003856828
1.CHECK COOLING FAN FUNCTION
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III.
3. Check that cooling fan speed varies according to the percent.
Without CONSULT-III
1. Perform IPDM E/R auto active test and check cooling fan motors operation, refer to PCS-11, "
Diagnosis
Description".
2. Check that cooling fan operates.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-324, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856829
1.CHECK COOLING FAN RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect cooling fan relays-2, -3.
3. Turn ignition switch ON.
4. Check the voltage between cooling fan relays-2, -3 harness connectors and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
Cooling fan speedCooling fan motor terminals
(+) (−)
Middle (MID)1 3 and 4
2 3 and 4
1 and 2 3
1 and 2 4
High (HI) 1 and 2 3 and 4
Cooling fan relay
Ground Voltage
Connector Terminal
E57
(cooling fan relay-2)2
Ground Battery voltage 5
E59
(cooling fan relay-3)2
5

ECM
EC-359
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
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INT/V TIM (B1) Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle−5° - 5°CA
2,000 rpm Approx. 0° - 30°CA
INT/V TIM (B2) Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle−5° - 5°CA
2,000 rpm Approx. 0° - 30°CA
INT/V SOL (B1) Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle 0% - 2%
2,000 rpm Approx. 0% - 50%
INT/V SOL (B2) Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadIdle 0% - 2%
2,000 rpm Approx. 0% - 50%
VIAS S/V-1 Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadWhen revving engine up to 5,000 rpm
quicklyOFF →ON → OFF
VIAS S/V-2 Engine: After warming up
 Selector lever: P or N
 Air conditioner switch: OFF
No loadWhen revving engine up to 5,000 rpm
quicklyOFF →ON → OFF
AIR COND RLY Engine: After warming up, idle the
engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates)ON
ENGINE MOUNT  Engine: After warming upBelow 950 rpm IDLE
Above 950 rpm TRVL
FUEL PUMP RLY For 1 second after turning ignition switch: ON
 Engine running or crankingON
 Except above OFF
THRTL RELAY  Ignition switch: ON ON
COOLING FAN Engine: After warming up, idle the
engine
 Air conditioner switch: OFFEngine coolant temperature: 97°C
(206°F) or lessOFF
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 moreHI
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 loadON
 Engine speed: Above 3,600 rpm OFF
HO2S2 HTR (B2) 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 loadON
 Engine speed: Above 3,600 rpm OFF
I/P PULLY SPD  Vehicle speed: More than 20km/h (12 MPH)Almost the same speed as
the tachometer indication
VEHICLE SPEED Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication.Almost the same speed as
the speedometer indication Monitor Item Condition Values/Status

ECM
EC-365
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
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(B)—Sensor ground
(Heated oxygen sensor 2)—— —
36
(B)—Sensor ground
(Throttle position sensor)—— —
37
(W)36
(B)Throttle position sensor 1 Input[Ignition switch: ON]
 Engine stopped
 Selector lever: D
 Accelerator pedal: Fully re-
leasedMore than 0.36 V
[Ignition switch: ON]
 Engine stopped
 Selector lever: D
 Accelerator pedal: Fully de-
pressedLess than 4.75 V
38
(R)36
(B)Throttle position sensor 2 Input[Ignition switch: ON]
 Engine stopped
 Selector lever: D
 Accelerator pedal: Fully re-
leasedLess than 4.75 V
[Ignition switch: ON]
 Engine stopped
 Selector lever: D
 Accelerator pedal: Fully de-
pressedMore than 0.36 V
39
(R)40
(G)Refrigerant pressure sensor Input[Engine is running]
 Warm-up condition
 Both A/C switch and blower
fan motor switch: ON (Com-
pressor operates)1.0 - 4.0 V
40
(G)—Sensor ground
(Refrigerant pressure sensor)—— —
41
(O/B)48
(B/P)Power steering pressure sen-
sorInput[Engine is running]
 Steering wheel: Being turned0.5 - 4.5 V
[Engine is running]
 Steering wheel: Not being
turned0.4 - 0.8 V
42
(BR)44
(G/B)Battery current sensor Input[Engine is running]
 Battery: Fully charged*
2
 Idle speed2.6 - 3.5 V
44
(G/B)—Sensor ground
(Battery current sensor)—— —
45
(P)49
(L)A/F sensor 1 (Bank 1) Input [Ignition switch: ON] 2.2 V
46
(Y)52
(B/R)Engine coolant temperature
sensorInput [Engine is running]0 - 4.8 V
Output voltage varies with engine
coolant temperature.
47
(G)36
(B)Sensor power supply
(Throttle position sensor)— [Ignition switch: ON] 5 V
48
(B/P)—Sensor ground
(Power steering pressure
sensor)—— —
49
(L)11 2
(B)A/F sensor 1 (Bank 1) Input[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm1.8 V
Output voltage varies with air fuel
ratio. Terminal No. Description
ConditionVa l u e
(Approx.)
+-– Signal nameInput/
Output

EC-366
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
ECM
50
(L/Y)56
(G/B)Intake air temperature sensor Input [Engine is running]0 - 4.8 V
Output voltage varies with intake
air temperature.
51
(R/Y)44
(G/B)Sensor power supply
(Battery current sensor)— [Ignition switch: ON] 5 V
52
(B/R)—Sensor ground
(Engine coolant temperature
sensor/Engine oil tempera-
ture sensor)—— —
53
(V)57
(LG)A/F sensor 1 (Bank 2) Input [Ignition switch: ON] 2.2 V
54
(G)52
(B/R)Engine oil temperature sensor Input [Engine is running]0 - 4.8 V
Output voltage varies with engine
oil temperature.
55
(SB)48
(Y)Sensor power supply
(Power steering pressure
sensor)— [Ignition switch: ON] 5 V
56
(G/B)—Sensor ground
(Mass air flow sensor/Intake
air temperature sensor)—— —
57
(LG)11 2
(B)A/F sensor 1 (Bank 2) Input[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm1.8 V
Output voltage varies with air fuel
ratio.
58
(O)56
(G/B)Mass air flow sensor Input[Engine is running]
 Warm-up condition
 Idle speed0.9 - 1.2 V
[Engine is running]
 Warm-up condition
 Engine speed: 2,500 rpm1.6 - 1.9 V
59
(G/W)64
(B/R)Sensor power supply
[Camshaft position sensor
(PHASE) (Bank 1)]— [Ignition switch: ON] 5 V
60
(Y/B)—Sensor ground
[Crankshaft position sensor
(POS)]—— —
61
(B)67
(GR)Knock sensor (Bank 1) Input[Engine is running]
 Idle speed2.5 V*
1
62
(W)67
(GR)Knock sensor (Bank 2) Input[Engine is running]
 Idle speed2.5 V*1
63
(R/W)68
(Y/G)Sensor power supply
[Camshaft position sensor
(PHASE) (Bank 2)]— [Ignition switch: ON] 5 V
64
(B/R)—Sensor ground
[Camshaft position sensor
(PHASE) (Bank 1)]—— — Terminal No. Description
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output

ECM
EC-387
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
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DTC RELATED ITEM
Engine operating condi-
tion in fail-safe modeDetected items RemarksReference
page
Engine speed will not
rise more than 2,500 rpm
due to the fuel cutMalfunction indicator
circuitWhen there is an open circuit on MI circuit, the ECM cannot warn the
driver by illuminating MI 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 MI circuit is open by
means of operating the fail-safe function.
The fail-safe function also operates when above diagnoses except MI
circuit are detected and demands the driver to repair the malfunction.EC-346
DTC No. Detected items Engine operating condition in fail-safe mode
P0011
P0021Intake valve timing control The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
P0102
P0103Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the following condition.
CONSULT-III displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned ON
or START40°C (104°F)
Approx. 4 minutes or more after
engine starting80°C (176°F)
Except as shown above40 - 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
P2135Throttle 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.
So, the acceleration will be poor.
P0500 Vehicle speed sensor The cooling fan operates (Highest) while engine is running.
P0605 ECM (When ECM calculation function is a 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
P2100
P2103Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2101 Electric throttle control
functionECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2118 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.