Nissan Pathfinder (2010 year). Manual — part 347

EC-868

< COMPONENT DIAGNOSIS >

[VK56DE]

ASCD BRAKE SWITCH

4. Check voltage between ASCD brake switch terminal 1 and

ground with CONSULT-III or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.

• Fuse block (J/B) connector E160

• 10 A fuse (No. 12)

• Harness for open or short between ASCD brake switch and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between ECM terminal 108 and ASCD brake switch terminal 2.

Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 5.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK ASCD BRAKE SWITCH

Refer to

EC-868, "Component Inspection"

.

OK or NG

OK

>> GO TO 6.

NG

>> Replace ASCD brake switch.

6.

CHECK INTERMITTENT INCIDENT

Refer to

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000005257889

ASCD BRAKE SWITCH

1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.

Voltage: Battery voltage

PBIB0857E

Continuity should exist.

2010 Pathfinder

ASCD BRAKE SWITCH

EC-869

< COMPONENT DIAGNOSIS >

[VK56DE]

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3. Check harness continuity between ASCD brake switch terminals

1 and 2 under the following conditions.

If NG, adjust ASCD brake switch installation, refer to

BR-23,

"Removal and Installation"

, and perform step 3 again.

Condition

Continuity

Brake pedal: Fully released

Should exist.

Brake pedal: Slightly depressed

Should not exist.

SEC023D

2010 Pathfinder

EC-870

< COMPONENT DIAGNOSIS >

[VK56DE]

ASCD INDICATOR

ASCD INDICATOR

Component Description

INFOID:0000000005257890

ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and

SET, and is integrated in combination meter.

CRUISE indicator illuminates when MAIN switch on ASCD steering switch is turned ON to indicate that ASCD

system is ready for operation.

SET indicator illuminates when the following conditions are met.

• CRUISE indicator is illuminated.

• SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of the

ASCD setting.

SET indicator remains lit during ASCD control.

Refer to

EC-527, "System Description"

for the ASCD function.

Diagnosis Procedure

INFOID:0000000005257891

1.

CHECK OVERALL FUNCTION

Check ASCD indicator under the following conditions.

OK or NG

OK

>>

INSPECTION END

NG

>> GO TO 2.

2.

CHECK DTC

Check that DTC U0101 or U1001 is not displayed.
OK or NG

OK

>> GO TO 3.

NG

>> Perform trouble diagnosis for DTC U0101 or U1001. Refer to

EC-578, "DTC Confirmation Proce-

dure"

or

EC-579, "DTC Confirmation Procedure"

.

3.

CHECK COMBINATION METER FUNCTION

Refer to

MWI-24, "CONSULT-III Function (METER/M&A)"

.

OK or NG

OK

>> GO TO 4.

NG

>> Go to

MWI-3, "Work Flow"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to

GI-37, "Intermittent Incident"

.

>>

INSPECTION END

ASCD INDICATOR

CONDITION

SPECIFICATION

CRUISE LAMP

• Ignition switch: ON

• MAIN switch: Pressed at the 1st

time

→

at the 2nd time

ON

→

OFF

SET LAMP

• MAIN switch: ON
• When vehicle speed : Between

40 km/h (25 MPH) and 144 km/h
(89 MPH)

• ASCD: Operating

ON

• ASCD: Not operating

OFF

2010 Pathfinder

COOLING FAN

EC-871

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COOLING FAN

Description

INFOID:0000000005257892

COMPONENT DESCRIPTION

Cooling Fan Motor

The cooling fan operates at each speed when the current flows in the cooling fan motor as per the following.

Diagnosis Procedure

INFOID:0000000005257893

1.

CHECK IPDM E/R POWER SUPPLY AND GROUND CIRCUIT

Refer to

PCS-17, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 2.

NG

>> Follow the instructions on

PCS-17, "Diagnosis Procedure"

.

2.

CHECK COOLING FAN MOTOR POWER SUPPLY CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R harness connector E120.

3. Disconnect cooling fan motor (1) harness connector.

4. Check harness continuity between the following terminals;

cooling fan motor terminal 1 and IPDM E/R terminal 20,

cooling fan motor terminal 2 and IPDM E/R terminal 24.

Refer to Wiring Diagram.

5. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 3.

NG

>> Repair open circuit or short to ground or short to power

in harness or connectors.

3.

CHECK COOLING FAN MOTER GROUND CIRCUIT FOR OPEN OR SHORT

1. Check harness continuity between the following terminals;

cooling fan motor terminal 3 and ground,

cooling fan motor terminal 4 and ground.

Refer to Wiring Diagram.

2. Also check harness for short to power.
OK or NG

OK

>> GO TO 4.

NG

>> Repair open circuit or short to power in harness or connectors.

4.

CHECK COOLING FAN MOTOR

Refer to

EC-872, "Component Inspection"

.

OK or NG

OK

>> GO TO 5.

Cooling fan speed

Cooling fan motor terminals

(+)

(

−

)

Low (LOW)

1

3 and 4

2

3 and 4

High (HI)

1 and 2

3 and 4

Continuity should exist.

ALBIA0355ZZ

Continuity should exist.

2010 Pathfinder

EC-872

< COMPONENT DIAGNOSIS >

[VK56DE]

COOLING FAN

NG

>> Replace cooling fan motor.

5.

CHECK INTERMITTENT INCIDENT

Perform

GI-37, "Intermittent Incident"

.

OK or NG

OK

>> INSPETION END

NG

>> Repair or replace harness or connector.

Component Inspection

INFOID:0000000005257894

COOLING FAN MOTOR

1. Disconnect cooling fan motor harness connector.
2. Supply cooling fan motor terminals with battery voltage and

check operation.

Cooling fan motor should operate.

If NG, replace cooling fan motor.

Cooling fan speed

Cooling fan motor terminals

(+)

(

−

)

Low

1

3 and 4

2

3 and 4

High

1 and 2

3 and 4

SEF734W

2010 Pathfinder

ELECTRICAL LOAD SIGNAL

EC-873

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[VK56DE]

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ELECTRICAL LOAD SIGNAL

Description

INFOID:0000000005257895

The electrical load signal (Headlamp switch signal, etc.) is transferred via the CAN communication line.

Diagnosis Procedure

INFOID:0000000005257896

1.

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I

1. Turn ignition switch ON.

2. Connect CONSULT-III and select “DATA MONITOR” mode.

3. Select “LOAD SIGNAL” and check indication under the following conditions.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 4.

2.

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II

Check “LOAD SIGNAL” indication under the following conditions.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 5.

3.

CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION

Select “HEATER FAN SW” and check indication under the following conditions.

OK or NG

OK

>>

INSPECTION END

NG

>> GO TO 6.

4.

CHECK REAR WINDOW DEFOGGER SYSTEM

Refer to

DEF-3, "Repair Work Flow"

.

>>

INSPECTION END

5.

CHECK HEADLAMP SYSTEM

Refer to

EXL-4, "Work Flow"

.

>>

INSPECTION END

6.

CHECK HEATER FAN CONTROL SYSTEM

Refer to

HAC-4, "How to Perform Trouble Diagnosis For Quick And Accurate Repair"

or

HAC-122, "How to

Perform Trouble Diagnosis For Quick And Accurate Repair"

.

Condition

Indication

Rear window defogger switch: ON

ON

Rear window defogger switch: OFF

OFF

Condition

Indication

Lighting switch: ON at 2nd position

ON

Lighting switch: OFF

OFF

Condition

Indication

Heater fan control switch: ON

ON

Heater fan control switch: OFF

OFF

2010 Pathfinder

EC-874

< COMPONENT DIAGNOSIS >

[VK56DE]

ELECTRICAL LOAD SIGNAL

>>

INSPECTION END

2010 Pathfinder

FUEL INJECTOR

EC-875

< COMPONENT DIAGNOSIS >

[VK56DE]

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FUEL INJECTOR

Component Description

INFOID:0000000005257897

The fuel injector is a small, precise solenoid valve. When the ECM

supplies a ground to the fuel injector circuit, the coil in the fuel injec-

tor is energized. The energized coil pulls the ball valve back and

allows fuel to flow through the fuel injector into the intake manifold.

The amount of fuel injected depends upon the injection pulse dura-

tion. Pulse duration is the length of time the fuel injector remains

open. The ECM controls the injection pulse duration based on

engine fuel needs.

Diagnosis Procedure

INFOID:0000000005257898

1.

INSPECTION START

Turn ignition switch to START.

Are any cylinders ignited?

Yes or No

Yes

>> GO TO 2.

No

>> GO TO 3.

2.

CHECK OVERALL FUNCTION

With CONSULT-III

1. Start engine.

2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.

3. Check that each circuit produces a momentary engine speed drop.

Without CONSULT-III

1. Start engine.

2. Listen to each fuel injector operating sound.

Clicking noise should be heard.

OK or NG

OK

>>

INSPECTION END

NG

>> GO TO 3.

3.

CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect fuel injector harness connector.

3. Turn ignition switch ON.

SEF375Z

PBIB1986E

BBIA0374E

2010 Pathfinder