2008 INFINITI FX35 Service Manual

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Page 1681 of 3924

INFINITI FX35 2008 Service Manual
DTC P1217 ENGINE OVER TEMPERATUREEC-441
< SERVICE INFORMATION > [VQ35DE]
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Diagnosis ProcedureINFOID:0000000001326296
PROCEDURE A
1.INSPECTION START
Do you have CONSULT-

Page 1682 of 3924

INFINITI FX35 2008 Service Manual
EC-442
< SERVICE INFORMATION >[VQ35DE]
DTC P1217 ENGINE
OVER TEMPERATURE
No >> GO TO 3.
2.CHECK COOLING FAN OPERATION
With CONSULT-III
1. Start engine and let it idle.
2. Select “COOLING FAN”

Page 1683 of 3924

INFINITI FX35 2008 Service Manual
DTC P1217 ENGINE OVER TEMPERATUREEC-443
< SERVICE INFORMATION > [VQ35DE]
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3. Check voltage between IPDM E/R terminal 16 and ground with
CONSULT-III or tester.
OK or NG

Page 1684 of 3924

INFINITI FX35 2008 Service Manual
EC-444
< SERVICE INFORMATION >[VQ35DE]
DTC P1217 ENGINE
OVER TEMPERATURE
Harness connectors E29, E121
Harness for open or short between cooling fan motor-1 and battery
>> Repair open circuit or

Page 1685 of 3924

INFINITI FX35 2008 Service Manual
DTC P1217 ENGINE OVER TEMPERATUREEC-445
< SERVICE INFORMATION > [VQ35DE]
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Check the following.
Harness connectors E29, E121
Harness for open or short between coolin

DTC P1217 ENGINE OVER TEMPERATUREEC-445
< SERVICE INFORMATION > [VQ35DE]
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Check the following.
Harness connectors E29, E121
Harness for open or short between cooling fan motor-2 and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
12.CHECK COOLING FAN MOTORS
Refer to EC-446, "
Component Inspection".
OK or NG
OK >> GO TO 13.
NG >> Replace malfunctioning cooling fan motors.
13.CHECK INTERMITTENT INCIDENT
Perform EC-139
.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-17.
NG >> Repair or replace harness or connector.
Main 12 Causes of OverheatingINFOID:0000000001326297
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 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-7
.
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 tester 50 - 50% coolant mixture MA-10, "
Anti-Freeze
Coolant Mixture Ratio"
3 Coolant level Visual Coolant up to MAX level in
reservoir tank and radiator
filler neckCO-10, "Changing Engine
Coolant"
4 Radiator cap Pressure tester 59 - 98 kPa
(0.6 - 1.0 kg/cm2, 9 - 14
psi) (Limit) CO-14, "
Checking Radia-
tor Cap"
ON*25 Coolant leaks Visual No leaks
CO-10, "Inspection"
ON*26 Thermostat Touch the upper and
lower radiator hosesBoth hoses should be hot
CO-27
ON*17 Cooling fan CONSULT-III Operating See trouble diagnosis for
DTC P1217 (EC-437
).
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 idling CO-10, "
Changing Engine
Coolant"
OFF*410 Coolant return from res-
ervoir tank to radiator Visual Should be initial level in
reservoir tank CO-10, "Changing Engine
Coolant"
OFF 11 Cylinder head Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping) EM-101, "Removal and
Installation"
12 Cylinder block and pis-
tons Visual No scuffing on cylinder
walls or piston EM-122
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 1686 of 3924

INFINITI FX35 2008 Service Manual
EC-446
< SERVICE INFORMATION >[VQ35DE]
DTC P1217 ENGINE
OVER TEMPERATURE
Component Inspection
INFOID:0000000001326298
COOLING FAN MOTORS-1 AND -2
1. Disconnect cooling fan motor harness connectors.

Page 1687 of 3924

INFINITI FX35 2008 Service Manual
DTC P1225 TP SENSOREC-447
< SERVICE INFORMATION > [VQ35DE]
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DTC P1225 TP SENSOR
Component DescriptionINFOID:0000000001326299
Electric throttle control actuator
consist

DTC P1225 TP SENSOREC-447
< SERVICE INFORMATION > [VQ35DE]
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DTC P1225 TP SENSOR
Component DescriptionINFOID:0000000001326299
Electric throttle control actuator
consists of throttle control motor,
throttle position (TP) sensor, et c. The throttle position sensor
responds to the throttle valve movement.
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.
On Board Diagnosis LogicINFOID:0000000001326300
The MIL will not light up for this self-diagnosis.
DTC Confirmation ProcedureINFOID:0000000001326301
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to EC-447, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001326302
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if foreign matter is c aught between the throttle valve and
the housing.
OK or NG
OK >> GO TO 2.
NG >> Remove the foreign matter and clean the electric throttle control actuator inside.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-85, "
Throttle Valve Closed Position Learning".
3. Perform EC-85, "
Idle Air Volume Learning".
PBIB0145E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1225
1225 Closed throttle position
learning performance Closed throttle position learning value is exces-
sively low. Electric throttle control actuator
(TP sensor 1 and 2)
PBIB1556E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 1688 of 3924

INFINITI FX35 2008 Service Manual
EC-448
< SERVICE INFORMATION >[VQ35DE]
DTC P1225 TP SENSOR
>>
INSPECTION END
Removal and InstallationINFOID:0000000001326303
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-19.
3AA93ABC3ACD3AC03ACA3A

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