Nissan Pathfinder (2011 year). Manual - part 347

EC-830

< DTC/CIRCUIT DIAGNOSIS >

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P1148, P1168 CLOSED LOOP CONTROL

P1148, P1168 CLOSED LOOP CONTROL

On Board Diagnosis Logic

INFOID:0000000006244497

These self-diagnoses have the one trip detection logic.

DTC P1148 or P1168 is displayed with another DTC for air fuel ratio (A/F) sensor 1.

Perform the trouble diagnosis for the corresponding DTC.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1148
1148
(Bank 1)

Closed loop control 
function

The closed loop control function for bank 1 does 
not operate even when vehicle is being driven 
in the specified condition.

• Harness or connectors

[The air fuel ratio (A/F) sensor 1 circuit is 
open or shorted.]

• Air fuel ratio (A/F) sensor 1
• Air fuel ratio (A/F) sensor 1 heater

P1168
1168
(Bank 2)

The closed loop control function for bank 2 does 
not operate even when vehicle is being driven 
in the specified condition.

2011 Pathfinder

P1211 TCS CONTROL UNIT

EC-831

< DTC/CIRCUIT DIAGNOSIS >

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P1211 TCS CONTROL UNIT

Description

INFOID:0000000006244498

The malfunction information related to TCS is transferred to ECM via the CAN communication line from “ABS

actuator and electric unit (control unit)”.

Always erase the malfunction information such as DTC not only for “ABS actuator and electric unit

(control unit)” but also for ECM after TCS related repair.

On Board Diagnosis Logic

INFOID:0000000006244499

Freeze frame data is not stored in the ECM for this self-diagnosis.

The MIL will not illuminate for this self-diagnosis.

DTC Confirmation Procedure

INFOID:0000000006244500

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.

1. Start engine and let it idle for at least 60 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to 

EC-831, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006244501

Go to 

BRC-117, "Work Flow"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1211
1211

TCS control unit

ECM receives a malfunction information from
“ABS actuator electric unit (control unit)”

• ABS actuator and electric unit (control unit)
• TCS related parts

2011 Pathfinder

EC-832

< DTC/CIRCUIT DIAGNOSIS >

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P1212 TCS COMMUNICATION LINE

P1212 TCS COMMUNICATION LINE

Description

INFOID:0000000006244502

NOTE:

•

If DTC P1212 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.

•

If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-819, "DTC Confirmation Procedure"

.

This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse

signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”.

Always erase the malfunction information such as DTC not only for “ABS actuator and electric unit

(control unit)” but also for ECM after TCS related repair.

On Board Diagnosis Logic

INFOID:0000000006244503

Freeze frame data is not stored in the ECM for this self-diagnosis.

The MIL will not illuminate for this self-diagnosis.

DTC Confirmation Procedure

INFOID:0000000006244504

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.

1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to 

EC-832, "Diagnosis Procedure"

. 

Diagnosis Procedure

INFOID:0000000006244505

Go to 

BRC-117, "Work Flow"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1212
1212

TCS communication line

ECM can not receive the information 
from “ABS actuator and electric unit 
(control unit)” continuously.

• Harness or connectors

(The CAN communication line is open or shorted.)

• ABS actuator and electric unit (control unit)
• Dead (Weak) battery

2011 Pathfinder

P1217 ENGINE OVER TEMPERATURE

EC-833

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P1217 ENGINE OVER TEMPERATURE

On Board Diagnosis Logic

INFOID:0000000006244506

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-819, "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-44, "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:0000000006244507

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-III

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-834,

"Diagnosis Procedure"

.

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

filled the coolant, skip the following steps and go to 

EC-834,

"Diagnosis Procedure"

.

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

SULT-III.

5. If the results are NG, go to 

EC-834, "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-835, "Main 

12 Causes of Overheating"

.

SEF621W

2011 Pathfinder

EC-834

< DTC/CIRCUIT DIAGNOSIS >

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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-834,

"Diagnosis Procedure"

.

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

filled the coolant, skip the following steps and go to 

EC-834,

"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-834, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006244508

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-III)>>GO TO 2.

OK (Without CONSULT-III)>>GO TO 3.

NG

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

CO-52, "Removal and Installation (Crankshaft

Driven Type)"

. 

2.

CHECK COOLING FAN OPERATION

With CONSULT-III

1. Start engine and let it idle.

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

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 

EC-907, "Diagnosis Procedure"

.)

3.

CHECK COOLING FAN OPERATION

Without CONSULT-III

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

OK

>> GO TO 4.

NG

>> Check cooling fan control circuit. (Go to 

EC-907, "Diagnosis Procedure"

.)

4.

CHECK COOLING SYSTEM FOR LEAK

Refer to 

CO-42, "System Inspection"

.

OK or NG

OK

>> GO TO 5.

NG

>> Check the following for leak. Refer to 

CO-42, "System Inspection"

.

• Hose

• Radiator

• Radiator cap

• Reservoir tank

• Water pump

5.

CHECK RESERVOIR TANK CAP

Refer to 

CO-42, "System Inspection"

.

OK or NG

SEF621W

2011 Pathfinder

P1217 ENGINE OVER TEMPERATURE

EC-835

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OK

>> GO TO 6.

NG

>> Replace reservoir tank cap.

6.

CHECK COMPONENT PARTS

Check the following

• Thermostat. Refer to 

CO-57, "Removal and Installation"

.

• Engine coolant temperature sensor. Refer to 

EC-651, "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-835, "Main 12 Causes of Overheating"

.

>>

INSPECTION END

Main 12 Causes of Overheating

INFOID:0000000006244509

*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-44, "Changing Engine 
Coolant"

4

• Reservoir tank cap

• Pressure tester

CO-42, "System Inspection"

ON*

2

5

• Coolant leakage

• Visual

No leakage

CO-42, "System Inspec-
tion"

ON*

2

6

• Thermostat

• Touch the upper and 

lower radiator hoses

Both hoses should be hot

CO-57, "Removal and In-
stallation"

ON*

1

7

• Cooling fan

• CONSULT-III

Operating

See trouble diagnosis for 
DTC P1217 (

EC-907, "Di-

agnosis Procedure"

).

ON*

2

7

• Cooling fan (Crankshaft 

driven)

• Visual

Operating

See 

CO-52, "Removal 

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-44, "Changing Engine 
Coolant"

OFF*

4

10

• Coolant return from res-

ervoir tank to radiator

• Visual

Should be initial level in 
reservoir tank

CO-44, "Changing Engine 
Coolant"

OFF

11

• Cylinder head

• Straight gauge feeler 

gauge

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

EM-219, "Inspection After 
Disassembly"

12

• Cylinder block and pis-

tons

• Visual

No scuffing on cylinder 
walls or piston

EM-225, "Removal and 
Installation"

2011 Pathfinder

EC-836

< DTC/CIRCUIT DIAGNOSIS >

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P1217 ENGINE OVER TEMPERATURE

For more information, refer to 

CO-40, "Troubleshooting Chart"

.

2011 Pathfinder

P1225 TP SENSOR

EC-837

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P1225 TP SENSOR

Component Description

INFOID:0000000006244510

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:0000000006244511

The MIL will not illuminate for this self-diagnosis.

DTC Confirmation Procedure

INFOID:0000000006244512

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-837, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006244513

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 

EM-166

.

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

2011 Pathfinder