Infiniti F50. Manual — part 466
DTC P1217 ENGINE OVER TEMPERATURE
EC-505
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COMPONENT DESCRIPTION
Cooling Fan Speed Control Solenoid Valve
The cooling fan speed control solenoid valve uses a ON/OFF duty to control the pressure of the cooling fan
fluid from the cooling fan pump. This solenoid valve is moved by ON/OFF pulse from the ECM. The longer the
ON pulse is sent to the solenoid valve, the lower speed the cooling fan operates.
CONSULT-II Reference Value in Data Monitor Mode
EBS00MJR
Specification data are reference values.
On Board Diagnosis Logic
EBS00MJS
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.
This self-diagnosis has the one trip detection logic.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in the
. Also, replace the engine oil.
1.
Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to
MA-12, "Anti-Freeze Coolant Mixture Ratio"
2.
After refilling coolant, run engine to ensure that no water-flow noise is emitted.
ON
Less than 680 kPa (6.94 kg/cm
2
, 98.6 psi)
700
400
300
680 - 1,660 kPa (6.94 - 16.93 kg/cm
2
, 98.6 - 240.7 psi)
900
700
300
1,660 - 1,960 kPa (16.93 - 19.99 kg/cm
2
, 240.7 - 284.2 psi)
1,100
1,100
1,250
More than 1,960 kPa (19.99 kg/cm
2
, 284.2 psi)
1,250
1,200
1,250
Air condi-
tioner
Refrigerant pressure
Vehicle speed
Less than 20 km/h
(12 MPH)
20 - 80 km/h
(12 - 50 MPH)
More than 80 km/h
(50 MPH)
MONITOR ITEM
CONDITION
SPECIFICATION
TRGT FAN RPM
●
Ignition switch: ON (Engine stopped)
0 rpm
●
Engine: Idle
300 - 2,550 rpm
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1217
1217
Engine over temperature
(Overheat)
●
Cooling fan does not operate properly
(Overheat).
●
Cooling fan system does not operate
properly (Overheat).
●
Engine coolant was not added to the
system using the proper filling method.
●
Engine coolant is not within the speci-
fied range.
●
Harness or connectors
(The cooling fan speed control circuit is
shorted to ground.)
●
Cooling fan speed control solenoid valve
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Cooling fan pump
●
Cooling fan drive pump
●
Cooling fan
●
Radiator coolant temperature sensor
●
Radiator hose
●
Radiator
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Radiator cap
●
Water pump
●
Thermostat
●
Drive belts
For more information, refer to
EC-506
DTC P1217 ENGINE OVER TEMPERATURE
Overall Function Check
EBS00MJT
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
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.
WITH CONSULT-II
1.
Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to
2.
Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to
3.
Start engine and make sure that the cooling fan operates. If not,
go to
EC-509, "Diagnostic Procedure"
.
4.
Select “TARGET FAN RPM” in “ACTIVE TEST” mode with CON-
SULT-II.
5.
Change “TRGT FAN RPM” indication by touching “UP” and
“DOWN”, then make sure that the cooling fan operating speed
changes according to “TRGT FAN RPM” indication.
6.
If the results are NG, go to
EC-509, "Diagnostic Procedure"
WITHOUT CONSULT-II
1.
Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to
2.
Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to
3.
Start engine.
Be careful not to overheat engine.
4.
Make sure that the cooling fan operates. If not, go to
5.
Turn ignition switch “OFF”.
6.
Disconnect radiator coolant temperature sensor harness connector.
7.
Connect 2.2k
Ω
resistor to engine coolant temperature sensor harness connector.
SEF621W
PBIB0143E
PBIB1862E
DTC P1217 ENGINE OVER TEMPERATURE
EC-507
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8.
Restart engine and make sure that cooling fan operates at
higher speed than the speed at step 4.
Be careful not to overheat engine.
9.
EC-509, "Diagnostic Procedure"
PBIB1861E
EC-508
DTC P1217 ENGINE OVER TEMPERATURE
Wiring Diagram
EBS00MJU
TBWM0048E
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