Infiniti G35 (V35). Manual — part 413
DTC P1217 ENGINE OVER TEMPERATURE
EC-533
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EC
2.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness for open or short between cooling fan motors-1, 2 and IPDM E/R
●
Harness for open or short between cooling fan motors-1, 2 and ground
●
Harness for open or short between IPDM E/R and ground
>> Repair open circuit or short to ground or short to power in harness connectors.
3.
CHECK COOLING FAN MOTORS
Refer to
EC-534, "Component Inspection"
OK or NG
OK
>> GO TO 4.
NG
>> Replace malfunctioning cooling fan motors.
4.
CHECK INTERMITTENT INCIDENT
Perform
EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
OK or NG
OK
PG-16, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
NG
>> Repair or replace harness or connectors.
Main 12 Causes of Overheating
NBS000XH
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-11, "Anti-Freeze
Coolant Mixture Ratio"
3
●
Coolant level
●
Visual
Coolant up to MAX level
in reservoir tank and radi-
ator filler neck
4
●
Radiator cap
●
Pressure tester
59 - 98 kPa
(0.6 - 1.0 kg/cm
2
, 9 - 14
psi) (Limit)
CO-15, "Checking Radia-
tor Cap"
ON*
2
5
●
Coolant leaks
●
Visual
No leaks
ON*
2
6
●
Thermostat
●
Touch the upper and
lower radiator hoses
Both hoses should be hot
CO-28, "WATER INLET
AND THERMOSTAT
ASSEMBLY"
ON*
1
7
●
Cooling fan
●
CONSULT-II
Operating
See trouble diagnosis for
DTC P1217 (
).
OFF
8
●
Combustion gas leak
●
Color checker chemical
tester 4 Gas analyzer
Negative
—
ON*
3
9
●
Coolant temperature
gauge
●
Visual
Gauge less than 3/4
when driving
—
●
Coolant overflow to
reservoir tank
●
Visual
No overflow during driving
and idling
OFF*
4
10
●
Coolant return from
reservoir tank to radia-
tor
●
Visual
Should be initial level in
reservoir tank
EC-534
DTC P1217 ENGINE OVER TEMPERATURE
*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-6, "OVERHEATING CAUSE ANALYSIS"
Component Inspection
NBS000XI
COOLING FAN MOTORS-1 AND -2
1.
Disconnect cooling fan motor harness connectors.
2.
Supply cooling fan motor terminals with battery voltage and
check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motors.
OFF
11
●
Cylinder head
●
Straight gauge feeler
gauge
0.1 mm (0.004 in) Maxi-
mum distortion (warping)
12
●
Cylinder block and pis-
tons
●
Visual
No scuffing on cylinder
walls or piston
Engine
Step
Inspection item
Equipment
Standard
Reference page
Speed
terminals
(+)
(
−
)
Cooling fan motor
Low
1
4
2
3
High
1 and 2
3 and 4
SEF734W
DTC P1225 TP SENSOR
EC-535
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EC
DTC P1225 TP SENSOR
PFP:16119
Component Description
NBS000XJ
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. 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 Logic
NBS000XK
The MIL will not light up for this self-diagnosis.
DTC Confirmation Procedure
NBS000XL
NOTE:
If DTC Confirmation Procedure has been previously conducted, 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.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Turn ignition switch ON.
5.
If 1st trip DTC is detected, go to
EC-536, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
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)
SEF058Y
EC-536
DTC P1225 TP SENSOR
Diagnostic Procedure
NBS000XM
1.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1.
Turn ignition switch OFF.
2.
Remove the intake air duct.
3.
Check if foreign matter is caught 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-79, "Throttle Valve Closed Position Learning"
3.
Perform
EC-79, "Idle Air Volume Learning"
>> INSPECTION END
Removal and Installation
NBS000XN
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to
EM-18, "INTAKE MANIFOLD COLLECTOR"
PBIB1015E
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