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Nissan Pathfinder (2012 year). Manual - part 346

P1217 ENGINE OVER TEMPERATURE

EC-849

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P1217 ENGINE OVER TEMPERATURE

On Board Diagnosis Logic

INFOID:0000000007358740

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

EC-835, "DTC Confirmation Procedure"

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, always replace the coolant. Refer to

CO-42, "Changing Engine Cool-

ant"

. Also, replace the engine oil. Refer to

LU-27, "Changing Engine Oil"

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-19, "FOR USA AND CANADA : SAE

Viscosity Number"

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

Overall Function Check

INFOID:0000000007358741

Use this procedure to check the overall function of the cooling system. During this check, a DTC might not be

confirmed.

WARNING:

Never remove the radiator cap and/or reservoir tank cap when the engine is hot. Serious burns could

be caused by high pressure fluid escaping from the radiator and/or reservoir tank.

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

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-850,

"Diagnosis Procedure"

2. Confirm whether customer filled the coolant or not. If customer

filled the coolant, skip the following steps and go to

EC-850,

"Diagnosis Procedure"

3. Turn ignition switch ON.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-

SULT.

5. If the results are NG, go to

EC-850, "Diagnosis Procedure"

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 level 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 shorted.)

• IPDM E/R
• Cooling fan
• Cooling fan (Crankshaft driven)
• Radiator hose
• Radiator
• Radiator cap
• Reservoir tank
• Reservoir tank cap
• Water pump
• Thermostat
For more information, refer to

EC-851, "Main

12 Causes of Overheating"

SEF621W

August 2012

2012 Pathfinder

EC-850

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P1217 ENGINE OVER TEMPERATURE

WITH GST

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-850,

"Diagnosis Procedure"

2. Confirm whether customer filled the coolant or not. If customer

filled the coolant, skip the following steps and go to

EC-850,

"Diagnosis Procedure"

3. Perform IPDM E/R auto active test and check cooling fan motor

operation, refer to

PCS-9, "Diagnosis Description"

4. If NG, go to

EC-850, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000007358742

CHECK COOLING FAN (CRANKSHAFT DRIVEN) OPERATION

1. Start engine and let it idle.

2. Make sure that cooling fan (crankshaft driven) operates normally.
OK or NG

OK (With CONSULT)>>GO TO 2.

OK (Without CONSULT)>>GO TO 3.

>> Check cooling fan (crankshaft driven). Refer to

CO-49, "Removal and Installation (Crankshaft

Driven Type)"

CHECK COOLING FAN OPERATION

With CONSULT

1. Start engine and let it idle.

2. Select “COOLING FAN” in “ACTIVE TEST” mode with CONSULT.

3. Make sure that cooling fan operates at each speed (LOW/HI).
OK or NG

>> GO TO 4.

>> Check cooling fan control circuit. (Go to

EC-921, "Diagnosis Procedure"

CHECK COOLING FAN OPERATION

Without CONSULT

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

PCS-9, "Diagnosis

Description"

2. Make sure that cooling fan operates at each speed (Low/High).
OK or NG

>> GO TO 4.

>> Check cooling fan control circuit. (Go to

EC-921, "Diagnosis Procedure"

CHECK COOLING SYSTEM FOR LEAK

Refer to

CO-41, "System Inspection"

OK or NG

>> GO TO 5.

>> Check the following for leak. Refer to

CO-41, "System Inspection"

• Hose

• Radiator

• Radiator cap

• Reservoir tank

• Water pump

CHECK RESERVOIR TANK CAP

Refer to

CO-41, "System Inspection"

OK or NG

SEF621W

August 2012

2012 Pathfinder

P1217 ENGINE OVER TEMPERATURE

EC-851

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

>> GO TO 6.

>> Replace reservoir tank cap.

CHECK COMPONENT PARTS

Check the following

• Thermostat. Refer to

CO-54, "Removal and Installation"

• Engine coolant temperature sensor. Refer to

EC-662, "Component Inspection"

OK or NG

>> GO TO 7.

>> Replace malfunctioning component.

CHECK MAIN 12 CAUSES

If the cause cannot be isolated, go to

EC-851, "Main 12 Causes of Overheating"

INSPECTION END

Main 12 Causes of Overheating

INFOID:0000000007358743

*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

• Blocked radiator
• Blocked condenser
• Blocked radiator grille
• Blocked bumper

• Visual

No blocking

—

• Coolant mixture

• Coolant tester

MA-19, "FOR USA AND CANADA : SAE Viscosity
Number"

• Coolant level

• Visual

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

CO-42, "Changing Engine
Coolant"

• Reservoir tank cap

• Pressure tester

CO-41, "System Inspection"

ON*

• Coolant leakage

• Visual

No leakage

CO-41, "System Inspec-
tion"

ON*

• Thermostat

• Touch the upper and

lower radiator hoses

Both hoses should be hot

CO-54, "Removal and In-
stallation"

ON*

• Cooling fan

• CONSULT

Operating

See trouble diagnosis for
DTC P1217 (

EC-921, "Di-

agnosis Procedure"

ON*

• Cooling fan (Crankshaft

driven)

• Visual

Operating

See

CO-49, "Removal

and Installation (Crank-
shaft Driven Type)"

OFF

• Combustion gas leak-

age

• Color checker chemical

tester 4 Gas analyzer

Negative

—

ON*

• 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-42, "Changing Engine
Coolant"

OFF*

• Coolant return from res-

ervoir tank to radiator

• Visual

Should be initial level in
reservoir tank

CO-42, "Changing Engine
Coolant"

OFF

• Cylinder head

• Straight gauge feeler

gauge

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

EM-218, "Inspection After
Disassembly"

• Cylinder block and pis-

tons

• Visual

No scuffing on cylinder
walls or piston

EM-224, "Removal and
Installation"

August 2012

2012 Pathfinder

EC-852

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P1217 ENGINE OVER TEMPERATURE

For more information, refer to

CO-39, "Troubleshooting Chart"

August 2012

2012 Pathfinder

P1225 TP SENSOR

EC-853

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P1225 TP SENSOR

Component Description

INFOID:0000000007358744

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 the two sensors. These sensors are

a kind of potentiometer which transform the throttle valve position

into output voltage, and emit the voltage signals to the ECM. The

ECM judges the current opening angle of the throttle valve from

these signals and controls the throttle valve in response to driving

conditions via the throttle control motor.

On Board Diagnosis Logic

INFOID:0000000007358745

The MIL will not illuminate for this self-diagnosis.

DTC Confirmation Procedure

INFOID:0000000007358746

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure

before conducting the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10 V 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-853, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000007358747

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

>> GO TO 2.

>> Remove the foreign matter and clean the electric throttle

control actuator inside. Refer to

EM-165

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

PBIB0145E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1225
1225

Closed throttle position learning
performance

Closed throttle position learning value is
excessively low.

• Electric throttle control actuator

(TP sensor 1 and 2)

BBIA0371E

August 2012

2012 Pathfinder

EC-854

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P1225 TP SENSOR

1. Replace the electric throttle control actuator. Refer to

EM-165

2. Perform

EC-597, "Throttle Valve Closed Position Learning"

3. Perform

EC-597, "Idle Air Volume Learning"

INSPECTION END

August 2012

2012 Pathfinder

P1226 TP SENSOR

EC-855

< DTC/CIRCUIT DIAGNOSIS >

[VK56DE]

P1226 TP SENSOR

Component Description

INFOID:0000000007358748

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 the two sensors. These sensors are

a kind of potentiometer which transform the throttle valve position

into output voltage, and emit the voltage signals to the ECM. The

ECM judges the current opening angle of the throttle valve from

these signals and controls the throttle valve in response to driving

conditions via the throttle control motor.

On Board Diagnosis Logic

INFOID:0000000007358749

The MIL will not illuminate for this self-diagnosis.

DTC Confirmation Procedure

INFOID:0000000007358750

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure

before conducting the next step.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.

1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Repeat steps 2 and 3 for 32 times.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to

EC-855, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000007358751

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

>> GO TO 2.

>> Remove the foreign matter and clean the electric throttle

control actuator inside. Refer to