Infiniti F50. Manual - part 466

 

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Infiniti F50. Manual - part 466

 

 

DTC P1217 ENGINE OVER TEMPERATURE

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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 

MA-13,

"Changing Engine Coolant"

 . 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

Cooling fan pump

Cooling fan drive pump

Cooling fan

Radiator coolant temperature sensor

Radiator hose

Radiator

Radiator cap

Water pump

Thermostat

Drive belts

For more information, refer to 

EC-512, "Main 

12 Causes of Overheating"

 .

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 

EC-509,

"Diagnostic Procedure"

 .

2.

Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to 

EC-509,

"Diagnostic Procedure"

 .

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 

EC-509,

"Diagnostic Procedure"

 .

2.

Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to 

EC-509,

"Diagnostic Procedure"

 .

3.

Start engine.
Be careful not to overheat engine.

4.

Make sure that the cooling fan operates. If not, go to 

EC-509,

"Diagnostic Procedure"

 .

5.

Turn ignition switch “OFF”.

6.

Disconnect radiator coolant temperature sensor harness connector.

7.

Connect 2.2k

 resistor to engine coolant temperature sensor harness connector.

SEF621W

PBIB0143E

PBIB1862E

DTC P1217 ENGINE OVER TEMPERATURE

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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.

If NG, go to 

EC-509, "Diagnostic Procedure"

 .

PBIB1861E

EC-508

DTC P1217 ENGINE OVER TEMPERATURE

Wiring Diagram

EBS00MJU

TBWM0048E

 

 

 

 

 

 

 

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