Infiniti FX35, FX50 (S51). Manual - part 708

 

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Infiniti FX35, FX50 (S51). Manual - part 708

 

 

P1217 ENGINE OVER TEMPERATURE

EC-373

< DTC/CIRCUIT DIAGNOSIS >

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P1217 ENGINE OVER TEMPERATURE

DTC Logic

INFOID:0000000005236967

DTC DETECTION LOGIC

NOTE:
• If DTC P1217 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P1217 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-358, "DTC Logic"

.

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.

CAUTION:

When a malfunction is indicated, always replace the coolant. Refer to 

CO-8, "Draining"

 and 

CO-9,

"Refilling"

Also, replace the engine oil. Refer to 

LU-8, "Draining"

and 

LU-8, "Refilling"

.

1.

Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Always use
coolant with the proper mixture ratio. Refer to 

MA-13, "Anti-Freeze Coolant Mixture Ratio"

.

2.

After refilling coolant, run engine to ensure that no water-flow noise is emitted.

DTC CONFIRMATION PROCEDURE

1.

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to 

EC-373, "Component Function Check"

.

NOTE:
Use component function check to check the overall function of the cooling fan. During this check, a DTC might
not be confirmed.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-374, "Diagnosis Procedure"

.

Component Function Check

INFOID:0000000005236968

1.

PERFORM COMPONENT FUNCTION CHECK-I

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.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1217

Engine over tempera-
ture (Overheat)

• Cooling fan does not operate properly (Over-

heat).

• Cooling fan system does not operate proper-

ly (Overheat).

• Engine coolant was not added to the system 

using the proper filling method.

• Engine coolant is not within the specified 

range.

• Harness or connectors

(The cooling fan circuit is open or short-
ed.)

• IPDM E/R
• Cooling fan relay
• Cooling fan control module
• Cooling fan motor
• Radiator hose
• Radiator
• Radiator  cap
• Water pump
• Thermostat

EC-374

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

P1217 ENGINE OVER TEMPERATURE

Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
Is the coolant level in the reservoir tank and/or radiator below the
proper range?

YES

>> Go to 

EC-374, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

PERFORM COMPONENT FUNCTION CHECK-II

Confirm whether customer filled the coolant or not.

Did customer fill the coolant?

YES

>> Go to 

EC-374, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM COMPONENT FUNCTION CHECK-III

With CONSULT-III

1.

Turn ignition switch ON.

2.

Perform “FAN DUTY CONTROL” in “ACTIVE TEST” mode with CONSULT-III.

3.

Check that cooling fan speed varies according to the percentage.

Without CONSULT-III

Perform IPDM E/R auto active test and check cooling fan motors operation, refer to 

PCS-11, "Diagnosis

Description"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-374, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005236969

1.

CHECK COOLING FAN OPERATION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Perform “FAN DUTY CONTROL” in “ACTIVE TEST” mode with CONSULT-III.

3.

Check that cooling fan speed varies according to the percentage.

Without CONSULT-III

1.

Perform IPDM E/R auto active test and check cooling fan motors operation, refer to 

PCS-11, "Diagnosis

Description"

.

2.

Check that cooling fan operates.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to 

EC-464, "Diagnosis Procedure"

.

2.

CHECK COOLING SYSTEM FOR LEAK-I

Check cooling system for leak. Refer to 

CO-8, "Inspection"

.

Is leakage detected?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK COOLING SYSTEM FOR LEAK-II

Check the following for leak.
• Hose
• Radiator
• Water pump

SEF621W

P1217 ENGINE OVER TEMPERATURE

EC-375

< DTC/CIRCUIT DIAGNOSIS >

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>> 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-23, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace thermostat

6.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Refer to 

EC-188, "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.

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

CO-8, "Inspection"

3

• Coolant  level

• Visual

Coolant up to MAX level in 
reservoir tank and radiator 
filler neck

CO-8, "Inspection"

4

• Radiator cap

• Pressure tester

CO-12, "RADIATOR CAP 
: Inspection"

ON*

2

5

• Coolant leaks

• Visual

No leaks

CO-8, "Inspection"

ON*

2

6

• Thermostat

• Touch the upper and 

lower radiator hoses

Both hoses should be hot

CO-23, "Inspection"

ON*

1

7

• Cooling fan

• CONSULT-III

Operating

EC-464, "Component 
Function Check"

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 res-

ervoir tank

• Visual

No overflow during driving 
and idling

CO-8, "Inspection"

OFF*

4

10

• Coolant return from res-

ervoir tank to radiator

• Visual

Should be initial level in 
reservoir tank

CO-8, "Inspection"

OFF

11

• Cylinder head

• Straight gauge feeler 

gauge

0.1 mm (0.004 in) Maxi-
mum distortion (warping)

EM-114, "Inspection"

12

• Cylinder block and pis-

tons

• Visual

No scuffing on cylinder 
walls or piston

EM-126, "Inspection"

EC-376

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

P1217 ENGINE OVER TEMPERATURE

For more information, refer to 

CO-4, "Troubleshooting Chart"

.

>> INSPECTION END

 

 

 

 

 

 

 

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