Nissan Pathfinder (2009 year). Instruction — part 472

AIR CONDITIONER CONTROL

HAC-171

< ECU DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

ABIIA0104GB

2009 Pathfinder

HAC-172

< ECU DIAGNOSIS >

[MANUAL AIR CONDITIONER]

AIR CONDITIONER CONTROL

ABIIA0105GB

2009 Pathfinder

AIR CONDITIONER CONTROL

HAC-173

< ECU DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

ABIIA0106GB

2009 Pathfinder

HAC-174

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

AIR CONDITIONER CONTROL

SYMPTOM DIAGNOSIS

AIR CONDITIONER CONTROL

Symptom Matrix Chart

INFOID:0000000003935986

SYMPTOM TABLE

Symptom

Reference Page

A/C system does not come on.

Go to Trouble Diagnosis Procedure for A/C System.

HAC-163

Air outlet does not change.

Go to Trouble Diagnosis Procedure for Mode Door Motor.

HAC-138

Mode door motor is malfunctioning.

Discharge air temperature does not change.

Go to Trouble Diagnosis Procedure for Air Mix Door Motor.

HAC-143

Air mix door motor is malfunctioning.

Intake door does not change.

Go to Trouble Diagnosis Procedure for Intake Door Motor.

HAC-146

Intake door motor is malfunctioning.

Front blower motor operation is malfunctioning.

Go to Trouble Diagnosis Procedure for Front Blower Motor.

HAC-149

Magnet clutch does not engage.

Go to Trouble Diagnosis Procedure for Magnet Clutch.

HAC-156

Insufficient cooling

Go to Trouble Diagnosis Procedure for Insufficient Cooling.

HAC-175

Insufficient heating

Go to Trouble Diagnosis Procedure for Insufficient Heating.

HAC-183

Noise

Go to Trouble Diagnosis Procedure for Noise.

HAC-185

2009 Pathfinder

INSUFFICIENT COOLING

HAC-175

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

INSUFFICIENT COOLING

Component Function Check

INFOID:0000000003935987

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.

Can the symptom be duplicated?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK FOR ANY SYMPTOMS

Perform a complete operational check for any symptoms. Refer to

HAC-125, "Operational Check"

.

Does another symptom exist?

YES

>> Refer to

HAC-174, "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-13, "Checking Drive Belts"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Adjust or replace compressor belt. Refer to

EM-13, "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-391, "Component Inspection"

.

Does cooling fan motor operate correctly?

YES

>> GO TO 7.

NO

>> Check cooling fan motor. Refer to

EC-390, "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"

.

2009 Pathfinder

HAC-176

< 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-176, "Diagnostic Work Flow"

.

NO

>> GO TO 10.

10.

CHECK REFRIGERANT PRESSURE

Check refrigerant pressure with manifold gauge connected. Refer to

HAC-178, "Performance Chart"

.

Is the inspection result normal?

YES

>> Perform diagnostic work flow. Refer to

HAC-176, "Diagnostic Work Flow"

.

NO

>> GO TO 11.

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:0000000003935988

2009 Pathfinder

INSUFFICIENT COOLING

HAC-177

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

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M

A

B

HAC

N

O

P

*1

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

*2

HA-54, "Removal and Installation for
Condenser"

*3

HAC-178, "Performance Chart"

*4

HAC-179, "Trouble Diagnoses for
Abnormal Pressure"

*5

HAC-144, "Air Mix Door Motor Diag-
nosis Procedure"

AWIIA0999GB

2009 Pathfinder

HAC-178

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

INSUFFICIENT COOLING

Performance Chart

INFOID:0000000003935989

TEST CONDITION

Testing must be performed as follows:

*1

VTL-12, "Removal and Installation"

*2

HAC-150, "Front Blower Motor Diag-
nosis Procedure"

*3

HA-41, "Removal and Installation for
Compressor Clutch"

*4

EM-13, "Checking Drive Belts"

*5

HA-40, "Removal and Installation for
Compressor"

AWIIA1000GB

2009 Pathfinder