Nissan Titan A60. Manual - part 600

 

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Nissan Titan A60. Manual - part 600

 

 

INSUFFICIENT COOLING

HAC-83

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

INSUFFICIENT COOLING

Component Function Check

INFOID:0000000006164725

SYMPTOM: Insufficient cooling

INSPECTION FLOW

1.

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE 

1. Press the AUTO switch.

2. Turn temperature control dial (driver) counterclockwise until 18

°C (60°F) is displayed.

3. 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-6, "Operational Check"

.

Does another symptom exist?

YES

>> Refer to 

HAC-82, "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-21, "Front Air Control Self-Diagnosis"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Refer to 

HAC-21, "Front Air Control Self-Diagnosis Code 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, "Removal and Installation"

.

6.

CHECK AIR MIX DOOR OPERATION

Check and verify air mix door mechanism for smooth operation. Refer to 

HAC-28, "Air Mix Door Motor (Driver)

Component Function Check"

.

Does air mix door operate correctly?

YES

>> GO TO 7.

NO

>> Check air mix door motor circuit. Refer to 

HAC-28, "Air Mix Door Motor (Driver) Diagnosis Proce-

dure"

 or 

HAC-32, "Air Mix Door Motor (Passenger) Diagnosis Procedure"

.

7.

CHECK COOLING FAN MOTOR OPERATION

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

EC-439, "Component Inspection"

.

Does cooling fan motor operate correctly?

YES

>> GO TO 8.

NO

>> Check cooling fan motor. Refer to 

EC-439, "Diagnosis Procedure"

.

8.

CHECK WATER VALVE OPERATION

Check and verify water valve for smooth operation. Refer to 

HAC-54, "Description"

.

Does water valve operate correctly?

YES

>> GO TO 9.

HAC-84

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

INSUFFICIENT COOLING

NO

>> Check water valve circuit. Refer to 

HAC-54, "Water Valve Diagnosis Procedure"

.

9.

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 10.

10.

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 11.

NO

>> Check contaminated refrigerant. Refer to 

HAC-95, "Working with HFC-134a (R-134a)"

.

11.

CHECK FOR EVAPORATOR FREEZE UP

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

YES

>> Perform performance test diagnoses. Refer to 

HAC-84, "Diagnostic Work Flow"

.

NO

>> GO TO 12.

12.

CHECK REFRIGERANT PRESSURE

Check refrigerant pressure with manifold gauge connected. Refer to 

HAC-86, "Performance Chart"

Is the inspection result normal?

YES

>> Perform performance test diagnoses. Refer to 

HAC-84, "Diagnostic Work Flow"

.

NO

>> GO TO 13.

13.

CHECK AIR DUCTS

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

YES

>> System OK.

NO

>> Repair air leaks.

Diagnostic Work Flow

INFOID:0000000006164726

HAC-86

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

INSUFFICIENT COOLING

Performance Chart

INFOID:0000000006164727

TEST CONDITION

Testing must be performed as follows:

*1

HA-33, "Removal and Installation for 
Compressor Clutch"

*2

HAC-44, "Front Blower Motor Com-
ponent Function Check"

*3

HA-33, "Removal and Installation for 
Compressor Clutch"

*4

EM-13, "Checking Drive Belts"

*5

HA-32, "Removal and Installation for 
Compressor"

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