2008 NISSAN TEANA Service Manual

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Page 1713 of 5121

NISSAN TEANA 2008 Service Manual 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 : Inspect

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"

Page 1714 of 5121

NISSAN TEANA 2008 Service Manual P1217 ENGINE OVER TEMPERATURE
EC-253
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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>> INSPECTION END

Page 1715 of 5121

NISSAN TEANA 2008 Service Manual EC-254
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1225 TP SENSOR
P1225 TP SENSOR
DescriptionINFOID:0000000003857978
Electric throttle control actuator consists of throttle control motor,
throttle positi

Page 1716 of 5121

NISSAN TEANA 2008 Service Manual P1225 TP SENSOR
EC-255
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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3. Check if foreign matter is caught between the throttle valve (1)
and the housing.
Is the inspection re

Page 1717 of 5121

NISSAN TEANA 2008 Service Manual EC-256
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1226 TP SENSOR
P1226 TP SENSOR
DescriptionINFOID:0000000003857979
Electric throttle control actuator consists of throttle control motor,
throttle positi

Page 1718 of 5121

NISSAN TEANA 2008 Service Manual P1226 TP SENSOR
EC-257
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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3. Check if foreign matter is caught between the throttle valve (1)
and the housing.
Is the inspection re

Page 1719 of 5121

NISSAN TEANA 2008 Service Manual EC-258
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1550 BATTERY CURRENT SENSOR
P1550 BATTERY CURRENT SENSOR
DescriptionINFOID:0000000003856732
The power generation voltage variable control enables fuel c

EC-258
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1550 BATTERY CURRENT SENSOR
P1550 BATTERY CURRENT SENSOR
DescriptionINFOID:0000000003856732
The power generation voltage variable control enables fuel consumption to be decreased by reducing the
engine load which is caused by the power generation of the generator. The battery current sensor is installed
to the battery cable at the negative terminal. The sensor measures the charging/discharging current of the bat-
tery. Based on the sensor signal, ECM judges whether or not the power generation voltage variable control is
performed. When performing the power generation voltage variable control, ECM calculates the target power
generation voltage based on the sensor signal. And ECM sends the calculated value as the power generation
command value to IPDM E/R. For the details of the power generation voltage variable control, refer to CHG-5,
"System Description".
CAUTION:
Never connect the electrical component or the ground wire directly to the battery terminal. The con-
nection causes the malfunction of the power generation voltage variable control, and then the battery
discharge may occur.
DTC LogicINFOID:0000000003856733
DTC DETECTION LOGIC
NOTE:
If DTC P1550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-243, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and at wait
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and wait at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-258, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856734
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E38. Refer to Ground Inspection in GI-37, "
Circuit Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT
1. Disconnect battery current sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between battery current sensor harness connector and ground.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1550Battery current sensor circuit
range/performanceThe output voltage of the battery current
sensor remains within the specified
range while engine is running. Harness or connectors
(The sensor circuit is open or shorted.)
Battery current sensor

Page 1720 of 5121

NISSAN TEANA 2008 Service Manual P1550 BATTERY CURRENT SENSOR
EC-259
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair open circuit, short to ground

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