Nissan Juke (2014 year). Service Repair Manual - part 152

 

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Nissan Juke (2014 year). Service Repair Manual - part 152

 

 

B27A2, B27A3, B27A4, B27A5 AIR MIX DOOR MOTOR

HAC-69

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT

Check continuity between air mix door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK AIR MIX DOOR MOTOR

Check air mix door motor. Refer to 

HAC-69, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-90, "Removal and Installation"

.

NO

>> Replace air mix door motor. Refer to 

HAC-99, "AIR MIX DOOR MOTOR : Removal and Installa-

tion"

.

Component Inspection

INFOID:0000000009754366

1.

CHECK AIR MIX DOOR MOTOR

1.

Remove air mix door motor. Refer to 

HAC-99, "AIR MIX DOOR MOTOR : Removal and Installation"

.

2.

Check resistance between air mix door motor terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace air mix door motor. Refer to 

HAC-99, "AIR MIX DOOR MOTOR : Removal and Installa-

tion"

.

Air mix door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M55

3

M50

17

Existed

6

18

1

19

4

20

Air mix door motor

Continuity

Connector

Terminal

M55

3

Ground

Not existed

6

1

4

Terminal

Resistance (

)

(Approx.)

2

1

90

3

4

6

Revision: 2013 October

2014 JUKE

HAC-70

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B27A6, B27A7, B27A8, B27A9 MODE DOOR MOTOR

B27A6, B27A7, B27A8, B27A9 MODE DOOR MOTOR

DTC Logic

INFOID:0000000009754367

DTC DETECTION LOGIC 

NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

50, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-51,

"DTC Logic"

.

• If mode door motors DTC (B27A6 – B27A9) are detected, there is probably a disconnected connector or an

open circuit in mode door motor drive power supply harness.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.

3.

Check DTC.

Is DTC detected?

YES

>> Refer to 

HAC-70, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009754368

1.

CHECK MODE DOOR MOTOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect mode door motor connector.

3.

Turn ignition switch ON.

4.

Check voltage between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector between mode door motor and fuse.

2.

CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Check continuity between mode door motor harness connector and A/C auto amp. harness connector.

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B27A6

MODE DOOR MOTOR

Short or open circuit of mode door motor drive 
signal terminal 1.

• Mode door motor
• A/C auto amp.
• Harness or connectors

(The motor circuit is open or short-
ed.)

B27A7

Short or open circuit of mode door motor drive 
signal terminal 2.

B27A8

Short or open circuit of mode door motor drive 
signal terminal 3.

B27A9

Short or open circuit of mode door motor drive 
signal terminal 4.

+

Voltage

Mode door motor

Connector

Terminal

M342

5

Ground

Battery voltage

Revision: 2013 October

2014 JUKE

B27A6, B27A7, B27A8, B27A9 MODE DOOR MOTOR

HAC-71

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT

Check continuity between mode door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK MODE DOOR MOTOR

Check mode door motor. Refer to 

HAC-71, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-90, "Removal and Installation"

.

NO

>> Replace mode door motor. Refer to 

HAC-98, "MODE DOOR MOTOR : Removal and Installation"

.

Component Inspection

INFOID:0000000009754369

1.

CHECK MODE DOOR MOTOR

1.

Remove mode door motor. Refer to 

HAC-98, "MODE DOOR MOTOR : Removal and Installation"

.

2.

Check resistance between mode door motor terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mode door motor. Refer to 

HAC-98, "MODE DOOR MOTOR : Removal and Installation"

.

Mode door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M342

4

M50

37

Existed

3

38

2

39

1

40

Mode door motor

Continuity

Connector

Terminal

M342

4

Ground

Not existed

3

2

1

Terminal

Resistance (

)

(Approx.)

5

1

90

2

3

4

Revision: 2013 October

2014 JUKE

HAC-72

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

A/C AUTO AMP.

A/C AUTO AMP. : Diagnosis Procedure

INFOID:0000000009754370

1.

CHECK SYMPTOM

Check symptom (A or B).

Which symptom is detected?

A

>> GO  TO  2.

B

>> GO  TO  5.

2.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10A fuse (No. 3).
NOTE:
Refer to 

PG-63, "Fuse and Fusible Link Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 

3.

CHECK A/C AUTO AMP. IGNITION POWER SUPPLY

1.

Disconnect A/C auto amp. connector. 

2.

Turn ignition switch ON. 

3.

Check voltage between A/C auto amp. harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector between A/C auto amp. and fuse.

4.

CHECK A/C AUTO AMP. GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Check continuity between A/C auto amp. harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-90, "Removal and Installation"

.

NO

>> Repair harness or connector.

5.

CHECK FUSE

Symptom

A

• Air conditioning system does not activate.
• Air conditioning system cannot be controlled.
• Operation status of air conditioning system is not indicated on display.
NOTE:
Fail-safe does not activate.

B

• Memory function does not operate normally.
• The setting is not maintained. (It returns to the initial condition)

+

Voltage

A/C auto amp.

Connector

Terminal

M50

11

Ground

Battery voltage

A/C auto amp.

Continuity

Connector

Terminal

M50

30

Ground

Existed

Revision: 2013 October

2014 JUKE

POWER SUPPLY AND GROUND CIRCUIT

HAC-73

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1.

Turn ignition switch OFF.

2.

Check 10A fuse [No.13, located in fuse block (J/B)].
NOTE:
Refer to 

PG-62, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 

6.

CHECK A/C AUTO AMP. BATTERY POWER SUPPLY

1.

Disconnect A/C auto amp. connector. 

2.

Check voltage between A/C auto amp. harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-90, "Removal and Installation"

.

NO

>> Repair harness or connector between A/C auto amp. and fuse.

+

Voltage

A/C auto amp.

Connector

Terminal

M50

12

Ground

Battery voltage

Revision: 2013 October

2014 JUKE

HAC-74

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

A/C ON SIGNAL

A/C ON SIGNAL

Component Function Check

INFOID:0000000009754371

1.

CHECK A/C ON SIGNAL

With CONSULT

1.

Turn ignition switch ON.

2.

Operate blower motor.

3.

Select “AIR CONDITIONER” of “BCM” using CONSULT.

4.

Select “AIR COND SW” in “DATA MONITOR” mode.

5.

Check A/C ON signal when the A/C switch is operated.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-74, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009754372

1.

CHECK A/C ON SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Turn ignition switch ON.

4.

Check output waveform between A/C auto amp. harness connector and ground with using oscilloscope.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-90, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK A/C ON SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between A/C auto amp. harness connector and BCM harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

Monitor item

Condition

Status

AIR COND SW

A/C switch

ON (A/C indicator: 
ON)

On

OFF (A/C indicator: 
OFF)

Off

+

Output waveform

A/C auto amp.

Connector

Terminal

M50

15

Ground

JPMIA0012GB

A/C auto amp.

BCM

Continuity

Connector

Terminal

Connector

Terminal

M50

15

M68

27

Existed

Revision: 2013 October

2014 JUKE

A/C ON SIGNAL

HAC-75

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

NO

>> Repair harness or connector.

3.

CHECK A/C ON SIGNAL CIRCUIT FOR SHORT

Check continuity between A/C auto amp. harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-90, "Removal and Installation"

.

NO

>> Repair harness or connector.

A/C auto amp.

Continuity

Connector

Terminal

M50

15

Ground

Not existed

Revision: 2013 October

2014 JUKE

HAC-76

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

BLOWER FAN ON SIGNAL

BLOWER FAN ON SIGNAL

Component Function Check

INFOID:0000000009754373

1.

CHECK BLOWER FAN ON SIGNAL

With CONSULT

1.

Turn ignition switch ON.

2.

Select “AIR CONDITIONER” of “BCM” using CONSULT.

3.

Select “FAN ON SIG” in “DATA MONITOR” mode.

4.

Check blower fan ON signal when the fan control dial is operated.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-76, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009754374

1.

CHECK BLOWER FAN ON SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. harness connector.

3.

Turn ignition switch ON.

4.

Check output waveform between A/C auto amp. and ground with using oscilloscope.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-90, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK BLOWER FAN ON SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity A/C auto amp. harness connector and BCM harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK BLOWER FAN ON SIGNAL CIRCUIT FOR SHORT

Monitor item

Condition

Status

FAN ON SIG

Blower motor

ON

On

OFF

OFF

+

Output waveform

A/C auto amp.

Connector

Terminal

M50

14

Ground

PKIB4960J

A/C auto amp.

BCM

Continuity

Connector

Terminal

Connector

Terminal

M50

14

M68

28

Existed

Revision: 2013 October

2014 JUKE

BLOWER FAN ON SIGNAL

HAC-77

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Check continuity between A/C auto amp. harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-90, "Removal and Installation"

.

NO

>> Repair harness or connector.

A/C auto amp.

Continuity

Connector

Terminal

M50

14

Ground

Not existed

Revision: 2013 October

2014 JUKE

HAC-78

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

BLOWER MOTOR

BLOWER MOTOR

Diagnosis Procedure

INFOID:0000000009754375

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check following fuses.

-

10A fuse [No. 15, located in fuse block (J/B)]

-

15A fuses [Nos. 14 and 16, located in fuse block (J/B)]

NOTE:
Refer to 

PG-62, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK BLOWER MOTOR POWER SUPPLY

1.

Disconnect blower motor connector. 

2.

Turn ignition switch ON.

3.

Check voltage between blower motor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK BLOWER RELAY

1.

Turn ignition switch OFF.

2.

Check blower relay. Refer to 

HAC-81, "Component Inspection (Blower Relay)"

.

Is the inspection result normal?

YES

>> Repair harness or connector between blower motor and fuse.

NO

>> Replace blower relay.

4.

CHECK BLOWER MOTOR CONTROL CIRCUIT

1.

Turn ignition switch OFF.

2.

Connect blower motor connector.

3.

Disconnect power transistor connector.

4.

Turn ignition switch ON.

5.

Check voltage between power transistor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK BLOWER MOTOR CONTROL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect blower motor connector.

3.

Check continuity between power transistor harness connector and blower motor harness connector. 

+

Voltage

(Approx.)

Blower motor

Connector

Terminal

M39

1

Ground

Battery voltage

+

Voltage

(Approx.)

Power transistor

Connector

Terminal

M344

1

Ground

Battery voltage

Revision: 2013 October

2014 JUKE

BLOWER MOTOR

HAC-79

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> Replace blower motor. Refer to 

VTL-14, "Removal and Installation"

.

NO

>> Repair harness or connector.

6.

CHECK A/C AUTO AMP. IGNITION POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp.

3.

Turn ignition switch ON.

4.

Check voltage between A/C auto amp. harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair harness or connector between A/C auto amp. and fuse.

7.

CHECK POWER TRANSISTOR IGNITION POWER SUPPLY

Check voltage between power transistor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair harness or connector between power transistor and fuse.

8.

CHECK POWER TRANSISTOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Check continuity between power transistor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair harness or connector.

9.

CHECK POWER TRANSISTOR CONTROL SIGNAL

1.

Connect blower motor connector and A/C auto amp. connector. 

2.

Turn ignition switch ON.

3.

Set air outlet to VENT. 

4.

Change fan speed from 1st – 7th, and check duty ratios between blower motor harness connector and
ground by using an oscilloscope. 
NOTE:
Calculate the drive signal duty ratio as shown in the figure.
T2 = Approx. 1.6 ms

Power transistor

Blower motor

Continuity

Connector

Terminal

Connector

Terminal

M344

1

M39

2

Existed

+

Voltage

(Approx.)

A/C auto amp.

Connector

Terminal

M50

21

Ground

Battery voltage

+

Voltage

(Approx.)

Power transistor

Connector

Terminal

M344

4

Ground

Battery voltage

Power transistor

Continuity

Connector

Terminal

M344

3

Ground

Existed

Revision: 2013 October

2014 JUKE

HAC-80

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

BLOWER MOTOR

Is the inspection result normal?

YES

>> Replace power transistor. Refer to 

HAC-96, "Removal and Installation"

.

NO

>> GO TO 10.

10.

CHECK POWER TRANSISTOR CONTROL SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect power transistor connector and A/C auto amp. connector.

3.

Check continuity between power transistor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair harness or connector.

11.

CHECK POWER TRANSISTOR CONTROL SIGNAL CIRCUIT FOR SHORT

Check continuity between power transistor harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-90, "Removal and Installation"

.

NO

>> Repair harness or connector.

Component Inspection (Blower Motor)

INFOID:0000000009754376

1.

CHECK BLOWER MOTOR

1.

Remove blower motor. Refer to 

VTL-14, "Removal and Installation"

.

2.

Check that there is not any mixing foreign object in the blower motor. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace blower motor. Refer to 

VTL-14, "Removal and Installation"

.

2.

CHECK BLOWER MOTOR

Check that there is not breakage or damage in the blower motor. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace blower motor. Refer to 

VTL-14, "Removal and Installation"

.

+

Condition

Duty ratio

(Approx.)

Output waveform

Power transistor

Connector

Terminal

Fan speed (manual) 

Air outlet: VENT

M344

2

Ground

1st

26%

2nd

34%

3rd

41%

4th

51%

5th

62%

6th

73%

7th

82%

JPIIA1646GB

Power transistor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M344

2

M50

13

Existed

Power transistor

Continuity

Connector

Terminal

M344

2

Ground

Not existed

Revision: 2013 October

2014 JUKE

BLOWER MOTOR

HAC-81

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

3.

CHECK BLOWER MOTOR

Check that blower motor turns smoothly. 
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace blower motor. Refer to 

VTL-14, "Removal and Installation"

.

Component Inspection (Blower Relay)

INFOID:0000000009754377

1.

CHECK BLOWER RELAY

1.

Remove blower relay. Refer to 

PG-62, "Fuse, Connector and Terminal Arrangement"

2.

Check continuity between blower relay terminal 3 and 5 when
the voltage is supplied between terminal 1 and 2. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace blower relay.

Terminal

Voltage

Continuity

3

5

ON

Existed

OFF

Not existed

JSIIA1551ZZ

Revision: 2013 October

2014 JUKE

HAC-82

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

MAGNET CLUTCH

MAGNET CLUTCH

Component Function Check

INFOID:0000000009754378

1.

CHECK MAGNET CLUTCH OPERATION

Perform auto active test of IPDM E/R. Refer to 

PCS-12, "Diagnosis Description"

Does it operate normally?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-82, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009754379

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10A fuse (No. 49, located in IPDM E/R). 
NOTE:
Refer to 

PG-64, "Fuse, Connector and Terminal Arrangement"

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 

2.

CHECK MAGNET CLUTCH

1.

Disconnect compressor connector. 

2.

Directly apply battery voltage to the magnet clutch. Check for operation visually and by sound. 

Does it operate normally?

YES

>> GO TO 3.

NO

>> Replace magnet clutch. Refer to 

HA-30, "MAGNET CLUTCH : Removal and Installation of Com-

pressor Clutch"

.

3.

CHECK MAGNET CLUTCH POWER SUPPLY CIRCUIT FOR OPEN

1.

Disconnect IPDM E/R connector.

2.

Check continuity between IPDM E/R harness connector and compressor harness connector. 

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-34, "Removal and Installation"

.

NO

>> Repair harness or connector. 

IPDM E/R

Compressor

Continuity

Connector

Terminal

Connector

Terminal

E15

56

F17

1

Existed

Revision: 2013 October

2014 JUKE

AUTOMATIC AIR CONDITIONER SYSTEM

HAC-83

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

SYMPTOM DIAGNOSIS

AUTOMATIC AIR CONDITIONER SYSTEM

Symptom Table

INFOID:0000000009754380

NOTE:
Perform self-diagnoses with CONSULT before performing the symptom diagnosis. If any DTC is detected,
perform the corresponding diagnosis.

Symptom

Corresponding malfunction part

Check item/Reference

• Air conditioning system does 

not activate.

• Air conditioning system can-

not be controlled.

• Operation status of air condi-

tioning system is not indicat-
ed on display.

Fail-safe activates

Multi display unit

AV-182, "Symptom Table"

Fail-safe does not acti-
vate

• A/C auto amp. ignition power supply 

and ground circuit

• A/C auto amp.

HAC-72, "A/C AUTO AMP. : Di-
agnosis Procedure"

Discharge air temperature does not change.

Air mix door motor system installation 
condition

Check air mix door motor sys-
tem is properly installed. Refer 
to 

HAC-97, "Exploded View"

.

Air outlet does not change.

Mode door motor system installation 
condition

Check mode door motor system 
is properly installed. Refer to 

HAC-97, "Exploded View"

.

Air inlet does not change.

Intake door motor system installation 
condition

Check intake door motor system 
is properly installed. Refer to 

HAC-97, "Exploded View"

.

Blower motor does not operates or operation speed is not 
normal.

• Blower motor power supply circuit
• Blower motor control circuit
• A/C auto amp. ignition power supply 

circuit

• Power transistor power supply and 

ground circuit

• Power transistor control signal cir-

cuit

• Blower  motor
• Power transistor
• A/C auto amp.

HAC-78, "Diagnosis Procedure"

 

Compressor does not operate. 

• Magnet clutch
• The circuit between magnet clutch 

and IPDM E/R

• IPDM E/R (A/C relay)
• The circuit between ECM and refrig-

erant pressure sensor

• Refrigerant pressure sensor
• A/C ON signal circuit
• Blower fan ON signal circuit
• A/C auto amp.

HAC-82, "Diagnosis Procedure"

• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)

• Magnet clutch control system
• Drive belt slipping
• Cooler cycle
• Air leakage from each duct
• A/C auto amp. connection recogni-

tion signal circuit

• Temperature setting trimmer

HAC-85, "Diagnosis Procedure"

• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)

• Engine cooling system
• Heater hose
• Heater core
• Air leakage from each duct
• Temperature setting trimmer

HAC-87, "Diagnosis Procedure"

Revision: 2013 October

2014 JUKE

HAC-84

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

AUTOMATIC AIR CONDITIONER SYSTEM

Noise is heard when the A/C 
system operates.

During compressor op-
eration

Cooler cycle 

HA-27, "Symptom Table"

During blower motor op-
eration

• Mixing any foreign object in blower 

motor

• Blower motor fan breakage
• Blower motor rotation inferiority

HAC-80, "Component Inspec-
tion (Blower Motor)"

• Memory function does not operate normally.
• The setting is not maintained. (It returns to initial condi-

tion)

• A/C auto amp. battery power supply 

circuit

• A/C auto amp.

HAC-72, "A/C AUTO AMP. : Di-
agnosis Procedure"

Symptom

Corresponding malfunction part

Check item/Reference

Revision: 2013 October

2014 JUKE

 

 

 

 

 

 

 

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