Nissan Frontier D40. Manual — part 756

AIR CONDITIONER CONTROL

HAC-127

< ECU DIAGNOSIS >

[MANUAL A/C (TYPE 2)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

ABIIA0436GB

HAC-128

< SYMPTOM DIAGNOSIS >

[MANUAL A/C (TYPE 2)]

MANUAL A/C IDENTIFICATION TABLE

SYMPTOM DIAGNOSIS

MANUAL A/C IDENTIFICATION TABLE

Application Table

INFOID:0000000005275950

Manual A/C Type

Description

Visual Identification

Manual A/C (Type 1)

Two Control Dial System

[with variable blower control

(VBC)]

Manual A/C (Type 2)

Three Control Dial System

[without variable blower con-

trol (VBC)]

AWIIA0481ZZ

AWIIA1228ZZ

AIR CONDITIONER CONTROL

HAC-129

< SYMPTOM DIAGNOSIS >

[MANUAL A/C (TYPE 2)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

AIR CONDITIONER CONTROL

Symptom Matrix Chart

INFOID:0000000005275951

SYMPTOM TABLE

Symptom

Reference Page

A/C system does not come on.

Go to Trouble Diagnosis Procedure for A/C System.

HAC-112

Air outlet does not change.

Go to Trouble Diagnosis Procedure for Mode Door Motor.

HAC-88

Mode door motor is malfunctioning.

Discharge air temperature does not change.

Go to Trouble Diagnosis Procedure for Air Mix Door Motor.

HAC-92

Air mix door motor is malfunctioning.

Intake door does not change.

Go to Trouble Diagnosis Procedure for Intake Door Motor.

HAC-95

Intake door motor is malfunctioning.

Front blower motor operation is malfunctioning.

Go to Trouble Diagnosis Procedure for Front Blower Motor.

HAC-98

Magnet clutch does not engage.

Go to Trouble Diagnosis Procedure for Magnet Clutch.

HAC-105

Insufficient cooling

Go to Trouble Diagnosis Procedure for Insufficient Cooling.

HAC-130

Insufficient heating

Go to Trouble Diagnosis Procedure for Insufficient Heating.

HAC-138

Noise

Go to Trouble Diagnosis Procedure for Noise.

HAC-140

HAC-130

< SYMPTOM DIAGNOSIS >

[MANUAL A/C (TYPE 2)]

INSUFFICIENT COOLING

INSUFFICIENT COOLING

Component Function Check

INFOID:0000000005275952

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-6, "Operational Check"

.

Does another symptom exist?

YES

>> Refer to

HAC-58, "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"

(QR25DE) or

EM-127, "Checking

Drive Belts"

(VQ40DE).

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Adjust or replace compressor belt. Refer to

EM-14, "Adjustment"

(QR25DE) or

EM-127, "Adjust-

ment"

(VQ40DE).

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-855, "Component Inspection"

.

Does cooling fan motor operate correctly?

YES

>> GO TO 7.

NO

>> Check cooling fan motor. Refer to

EC-294, "Diagnosis Procedure"

(QR25DE) or

EC-769, "Diagno-

sis Procedure"

(VQ40DE).

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?