Nissan Tiida C11. Manual - part 840

HAC-24

< COMPONENT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

MAGNET CLUTCH

NG

>> Perform trouble diagnosis for unusual pressure. Refer to 

HAC-77, "Trouble Diagnoses for

Unusual Pressure"

.

6.

CHECK MAGNET CLUTCH CIRCUIT

Perform diagnostic procedure for the magnetic clutch. Refer to "DIAGNOSTIC PROCEDURE FOR MAGNET
CLUTCH".
OK or NG

OK

>> If the symptom still exists, perform a complete operational check. Refer to 

HAC-6, "Operational

Check"

. If other symptoms exist, refer to 

HAC-5, "How to Perform Trouble Diagnosis For Quick

and Accurate Repair"

. 

NG

>> Repair as necessary.

Magnet Clutch Diagnosis Procedure

INFOID:0000000001547071

DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH

SYMPTOM: Magnet clutch does not engage in A/C, defrost/foot, or defrost mode.

1.

PERFORM AUTO ACTIVE TEST

Refer to XX.

Does the magnet clutch operate?

YES

>> GO TO 5.

NO

>>

Check 10A fuse (No. 42, located in the IPDM E/R).

• If fuse is OK, GO TO 2.
• If fuse is NG, replace fuse and check harness for short circuit. Repair or replace if necessary.

2.

CHECK POWER SUPPLY FOR IPDM E/R

Check power supply to 10A fuse (No. 42 located in the IPDM E/R).

OK or NG

OK

>> GO TO 3. 

NG

>> Check harness for open circuit. Repair or replace if necessary.

3.

CHECK POWER SUPPLY FOR A/C COMPRESSOR

AWIIA0352GB

:Battery voltage should exist

MAGNET CLUTCH

HAC-25

< COMPONENT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1.

Disconnect A/C compressor connector.

2.

Start the engine.

3.

Turn blower control dial and A/C switch ON.

4.

Check voltage between A/C compressor harness connector F3
terminal 1 and ground.

OK or NG

OK

>> Replace magnet clutch. Refer to XX. 

NG

>> GO TO 4.

4.

CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Check continuity between A/C compressor harness connector
F3 (A) terminal 1 and IPDM E/R harness connector E43 (B) ter-
minal 11.

OK or NG

OK

>> Replace IPDM E/R. Refer to XX.

NG

>> Repair harness or connector.

5.

CHECK DEFROST A/C SWITCH

1.

Start the engine.

2.

Turn the mode control dial to 

 (DEF) position.

Does the magnet clutch operate

OK

>> GO TO 6.

NG

>> GO TO 19.

6.

CHECK BCM INPUT (COMPRESSOR ON) SIGNAL

1.

Turn ignition switch OFF.

2.

Check compressor ON/OFF signal. Refer to 

HAC-15, "CONSULT-III Function (BCM)"

.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7.

CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM

1.

Turn ignition switch OFF.

2.

Disconnect front air control and BCM connector.

3.

Check continuity between front air control harness connector
M33 (A) terminal 1and BCM harness connector M19 (B) termi-
nal 61.

OK or NG

OK

>> GO TO 8.

NG

>> Repair harness or connector.

8.

CHECK REFRIGERANT PRESSURE SENSOR

1.

Reconnect front air control connector and BCM connector.

1 - Ground

:Battery voltage

SJIA0743E

1 - 11

:Continuity should exist

WJIA2233E

A/C SW ON

: AIR COND SW ON

A/C SW OFF

: AIR COND SW OFF

1 - 61

:Continuity should exist

AWIIA0448ZZ

HAC-26

< COMPONENT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

MAGNET CLUTCH

2.

Check refrigerant pressure sensor. Refer to 

EC-326, "Component Function Check"

 (HR16DE with EURO-

OBD), 

XX-XX, "*****"

 (HR16DE without EURO-OBD), 

EC-988, "Component Function Check"

 (MR18DE)

or 

EC-1166, "Diagnosis Procedure"

 (K9K).

.OK or NG

OK

>> •

WITH CONSULT-III

GO TO 9.

•

WITHOUT CONSULT-III

GO TO 10.

NG

>> Replace as necessary.

9.

CHECK BCM INPUT (FAN ON) SIGNAL

Check FAN ON/OFF signal. Refer to XX.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 10.

10.

CHECK BCM INPUT (FAN ON) SIGNAL

1.

Turn ignition switch ON.

2.

Turn blower control dial to "1" position.

3.

Confirm fan on signal between front air control harness connec-
tor M33 terminal 14 and ground using oscilloscope.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 11.

11.

CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector and BCM connector.

3.

Check continuity between BCM harness connector M19 (A) ter-
minal 50 and front air control harness connector M33 (B) termi-
nal 14.

OK or NG

OK

>> GO TO 12.

NG

>> Repair harness or connector.

12.

CHECK FAN SWITCH CIRCUIT

FAN CONTROL DIAL ON

: FAN ON SIG ON

FAN CONTROL DIAL OFF

: FAN ON SIG OFF

Terminals

Voltage

(Approx.)

(+)

(-)

Connector

Terminal

Front air con-

trol: M33

14

Ground

SJIA0750E

ZJIA0583J

A

B

Continuity

Connector

Terminal

Connector

Terminal

BCM: M19

50

Front air control: 

M33

14

Yes

AWIIA0449ZZ

MAGNET CLUTCH

HAC-27

< COMPONENT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1.

Turn blower control dial to the OFF position.

2.

Check continuity between front air control terminals 9 and 14.

OK or NG

OK

>> GO TO 13.

NG

>> Replace front air control. Refer to XX.

13.

CHECK FRONT AIR CONTROL GROUND CIRCUIT

Check continuity between front air control harness connector M33
terminal 9 and ground.

OK or NG

OK

>> GO TO 14.

NG

>> Repair harness or connector.

14.

CHECK BCM INPUT (COMPRESSOR ON) SIGNAL

1.

Reconnect BCM connector and front air control connectors.

2.

Turn ignition switch ON.

3.

Turn blower control dial clockwise to position "1".

4.

Confirm compressor on signal between front air control harness
connector M33 terminal 1 and ground using oscilloscope.

OK or NG

OK

>> GO TO 15.

NG

>> GO TO 17.

15.

CHECK A/C SWITCH CIRCUIT

9 - 14

:Continuity should exist

SJIA0753E

9 - Ground

:Continuity should exist

SJIA0754E

Terminals

Voltage

(Approx.)

(+)

(-)

Connector

Terminal

Front air control: 

M33

1

Ground

SJIA0755E

ZJIA0584J