Nissan Pathfinder (2011 year). Manual - part 464

AIR CONDITIONER CONTROL

HAC-175

< WIRING DIAGRAM >

[MANUAL AIR CONDITIONER]

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ABIIA0672GB

2011 Pathfinder

HAC-176

< WIRING DIAGRAM >

[MANUAL AIR CONDITIONER]

AIR CONDITIONER CONTROL

ABIIA0673GB

2011 Pathfinder

AIR CONDITIONER CONTROL

HAC-177

< WIRING DIAGRAM >

[MANUAL AIR CONDITIONER]

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ABIIA0674GB

2011 Pathfinder

HAC-178

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

AIR CONDITIONER CONTROL

SYMPTOM DIAGNOSIS

AIR CONDITIONER CONTROL

Symptom Matrix Chart

INFOID:0000000006243731

SYMPTOM TABLE

Symptom

Reference Page

A/C system does not come on.

Go to Trouble Diagnosis Procedure for A/C System.

HAC-167

Air outlet does not change.

Go to Trouble Diagnosis Procedure for Mode Door Motor.

HAC-142

Mode door motor is malfunctioning.

Discharge air temperature does not change.

Go to Trouble Diagnosis Procedure for Air Mix Door Motor.

HAC-147

Air mix door motor is malfunctioning.

Intake door does not change.

Go to Trouble Diagnosis Procedure for Intake Door Motor.

HAC-150

Intake door motor is malfunctioning.

Front blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Front Blower Motor.

HAC-153

Magnet clutch does not engage.

Go to Trouble Diagnosis Procedure for Magnet Clutch.

HAC-160

Insufficient cooling

Go to Trouble Diagnosis Procedure for Insufficient Cooling.

HAC-179

Insufficient heating

Go to Trouble Diagnosis Procedure for Insufficient Heating.

HAC-187

Noise

Go to Trouble Diagnosis Procedure for Noise.

HAC-189

2011 Pathfinder

INSUFFICIENT COOLING

HAC-179

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

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INSUFFICIENT COOLING

Component Function Check

INFOID:0000000006243732

SYMPTOM: Insufficient cooling

INSPECTION FLOW

1.

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE 

1. Turn temperature control dial counterclockwise to maximum cold.

2. Check for cold air at discharge air outlets.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK FOR ANY SYMPTOMS 

Perform a complete operational check for any symptoms. Refer to 

HAC-129, "Operational Check"

.

Does another symptom exist?

YES

>> Refer to 

HAC-178, "Symptom Matrix Chart"

. 

NO

>> System OK.

3.

CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 4.

4.

CHECK DRIVE BELTS 

Check compressor belt tension. Refer to 

EM-14, "Checking Drive Belts"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Adjust or replace compressor belt. Refer to 

EM-14, "Checking Drive Belts"

.

5.

CHECK AIR MIX DOOR OPERATION

Check and verify air mix door mechanism for smooth operation. 
Does air mix door operate correctly?

YES

>> GO TO 6.

NO

>> Repair or replace air mix door control linkage.

6.

CHECK COOLING FAN MOTOR OPERATION

Check and verify cooling fan motor for smooth operation. Refer to 

EC-396, "Component Inspection"

. 

Does cooling fan motor operate correctly?

YES

>> GO TO 7.

NO

>> Check cooling fan motor. Refer to 

EC-395, "Diagnosis Procedure"

. 

7.

CHECK RECOVERY/RECYCLING EQUIPMENT BEFORE USAGE

Check recovery/recycling equipment before connecting to vehicle. Verify there is no pressure in the recovery/

recycling equipment by checking the gauges. If pressure exists, recover refrigerant from equipment lines.

>> GO TO 8.

8.

CHECK REFRIGERANT PURITY

1. Connect recovery/recycling equipment to vehicle.

2. Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier.
Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Check contaminated refrigerant. Refer to 

HA-4, "Contaminated Refrigerant"

.

2011 Pathfinder

HAC-180

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

INSUFFICIENT COOLING

9.

CHECK FOR EVAPORATOR FREEZE UP

Start engine and run A/C. Check for evaporator freeze up.
Does evaporator freeze up?

YES

>> Perform diagnostic work flow. Refer to 

HAC-180, "Diagnostic Work Flow"

.

NO

>> GO TO 10.

10.

CHECK REFRIGERANT PRESSURE

Check refrigerant pressure with manifold gauge connected. Refer to 

HAC-182, "Performance Chart"

. 

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Perform diagnostic work flow. Refer to 

HAC-180, "Diagnostic Work Flow"

.

11.

CHECK AIR DUCTS

Check ducts for air leaks.
Is the inspection result normal?

YES

>> System OK.

NO

>> Repair air leaks.

Diagnostic Work Flow

INFOID:0000000006243733

2011 Pathfinder

INSUFFICIENT COOLING

HAC-181

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

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*1

HA-29, "Checking System for Leaks 
Using the Fluorescent Dye Leak De-
tector"

*2

HA-53, "Removal and Installation for 
Condenser"

*3

HAC-182, "Performance Chart"

*4

HAC-183, "Trouble Diagnoses for 
Abnormal Pressure"

*5

HAC-147, "Air Mix Door Motor Diag-
nosis Procedure"

AWIIA0999GB

2011 Pathfinder

HAC-182

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

INSUFFICIENT COOLING

Performance Chart

INFOID:0000000006243734

TEST CONDITION

Testing must be performed as follows:

*1

VTL-12, "Removal and Installation"

*2

HAC-154, "Front Blower Motor Diag-
nosis Procedure"

*3

HA-40, "Removal and Installation for 
Compressor Clutch"

*4

EM-14, "Checking Drive Belts"

*5

HA-38, "Removal and Installation for 
Compressor"

AWIIA1000GB

2011 Pathfinder