Nissan Pathfinder (2012 year). Manual — part 346
P1217 ENGINE OVER TEMPERATURE
EC-849
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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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
. Also, replace the engine oil. Refer to
.
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
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
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to
3. Turn ignition switch ON.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT.
5. If the results are NG, go to
.
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
.
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
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to
3. Perform IPDM E/R auto active test and check cooling fan motor
PCS-9, "Diagnosis Description"
.
4. If NG, go to
Diagnosis Procedure
INFOID:0000000007358742
1.
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.
NG
>> Check cooling fan (crankshaft driven). Refer to
CO-49, "Removal and Installation (Crankshaft
2.
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
OK
>> GO TO 4.
NG
>> Check cooling fan control circuit. (Go to
3.
CHECK COOLING FAN OPERATION
Without CONSULT
1. Perform IPDM E/R auto active test and check cooling fan motors operation, refer to
.
2. Make sure that cooling fan operates at each speed (Low/High).
OK or NG
OK
>> GO TO 4.
NG
>> Check cooling fan control circuit. (Go to
4.
CHECK COOLING SYSTEM FOR LEAK
OK or NG
OK
>> GO TO 5.
NG
>> Check the following for leak. Refer to
.
• Hose
• Radiator
• Radiator cap
• Reservoir tank
• Water pump
5.
CHECK RESERVOIR TANK CAP
OK or NG
SEF621W
August 2012
2012 Pathfinder
P1217 ENGINE OVER TEMPERATURE
EC-851
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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OK
>> GO TO 6.
NG
>> Replace reservoir tank cap.
6.
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
OK
>> GO TO 7.
NG
>> Replace malfunctioning component.
7.
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
1
• Blocked radiator
• Blocked condenser
• Blocked radiator grille
• Blocked bumper
• Visual
No blocking
—
2
• Coolant mixture
• Coolant tester
MA-19, "FOR USA AND CANADA : SAE Viscosity
Number"
3
• Coolant level
• Visual
Coolant up to MAX level in
reservoir tank and radiator
filler neck
CO-42, "Changing Engine
Coolant"
4
• Reservoir tank cap
• Pressure tester
ON*
2
5
• Coolant leakage
• Visual
No leakage
ON*
2
6
• Thermostat
• Touch the upper and
lower radiator hoses
Both hoses should be hot
CO-54, "Removal and In-
stallation"
ON*
1
7
• Cooling fan
• CONSULT
Operating
See trouble diagnosis for
DTC P1217 (
).
ON*
2
7
• Cooling fan (Crankshaft
driven)
• Visual
Operating
See
and Installation (Crank-
shaft Driven Type)"
.
OFF
8
• Combustion gas leak-
age
• 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-42, "Changing Engine
Coolant"
OFF*
4
10
• Coolant return from res-
ervoir tank to radiator
• Visual
Should be initial level in
reservoir tank
CO-42, "Changing Engine
Coolant"
OFF
11
• Cylinder head
• Straight gauge feeler
gauge
0.1 mm (0.004 in) Maxi-
mum distortion (warping)
EM-218, "Inspection After
Disassembly"
12
• 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]
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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
Diagnosis Procedure
INFOID:0000000007358747
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. Refer to
2.
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
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]
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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
Diagnosis Procedure
INFOID:0000000007358751
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. Refer to
PBIB0145E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1226
1226
Closed throttle position learning
performance
Closed throttle position learning is not performed
successfully, repeatedly.
• Electric throttle control actuator
(TP sensor 1 and 2)
BBIA0371E
August 2012
2012 Pathfinder
EC-856
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P1226 TP SENSOR
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator. Refer to
2. Perform
EC-597, "Throttle Valve Closed Position Learning"
3. Perform
EC-597, "Idle Air Volume Learning"
.
>>
INSPECTION END
August 2012
2012 Pathfinder
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