Nissan Xterra. Manual - part 463

HAC-50

< WIRING DIAGRAM >

[MANUAL AIR CONDITIONER]

AIR CONDITIONER CONTROL

ABIIA1284GB

AIR CONDITIONER CONTROL

HAC-51

< WIRING DIAGRAM >

[MANUAL AIR CONDITIONER]

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G

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HAC

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ABIIA1056GB

HAC-52

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

AIR CONDITIONER CONTROL

SYMPTOM DIAGNOSIS

AIR CONDITIONER CONTROL

Symptom Matrix Chart

INFOID:0000000009482494

SYMPTOM TABLE

Symptom

Reference Page

A/C system does not come on.

Go to Trouble Diagnosis Procedure for A/C System.

HAC-41

Air outlet does not change.

Go to Trouble Diagnosis Procedure for Mode Door Motor.

HAC-17

Mode door motor is malfunctioning.

Discharge air temperature does not change.

Go to Trouble Diagnosis Procedure for Air Mix Door Motor.

HAC-22

Air mix door motor is malfunctioning.

Intake door does not change.

Go to Trouble Diagnosis Procedure for Intake Door Motor.

HAC-25

Intake door motor is malfunctioning.

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

HAC-27

Magnet clutch does not engage.

Go to Trouble Diagnosis Procedure for Magnet Clutch.

HAC-33

Insufficient cooling

Go to Trouble Diagnosis Procedure for Insufficient Cooling.

HAC-53

Insufficient heating

Go to Trouble Diagnosis Procedure for Insufficient Heating.

HAC-61

Noise

Go to Trouble Diagnosis Procedure for Noise.

HAC-63

Self-Diagnosis cannot be performed

Go to Trouble Diagnosis Procedure for Self-Diagnosis.

HAC-16

INSUFFICIENT COOLING

HAC-53

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONER]

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INSUFFICIENT COOLING

Component Function Check

INFOID:0000000009482495

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-4, "Operational Check"

.

Does another symptom exist?

YES

>> Refer to 

HAC-52, "Symptom Matrix Chart"

. 

NO

>> System OK.

3.

CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 4.

4.

PERFORM SELF-DIAGNOSIS

Perform self-diagnosis. Refer to 

HAC-16, "Front Air Control Self-Diagnosis"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Check symptom chart. Refer to 

HAC-52, "Symptom Matrix Chart"

.

5.

CHECK DRIVE BELTS 

Check compressor belt tension. Refer to 

EM-13, "Checking Drive Belts"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Adjust or replace compressor belt. Refer to 

EM-13, "Adjustment"

.

6.

CHECK AIR MIX DOOR OPERATION

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

YES

>> GO TO 7.

NO

>> Repair or replace air mix door control linkage.

7.

CHECK COOLING FAN MOTOR OPERATION

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

EC-460, "Component Inspection"

. 

Does cooling fan motor operate correctly?

YES

>> GO TO 8.

NO

>> Check cooling fan motor. Refer to 

EC-460, "Component Inspection"

. 

8.

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 9.

9.

CHECK REFRIGERANT PURITY