Nissan March K13. Manual - part 381

HAC-58

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

BLOWER MOTOR

NO

>> GO TO 5.

5.

CHECK CONTINUITY BETWEEN BLOWER MOTOR AND FAN CONTROL AMP.

1.

Turn the ignition switch OFF.

2.

Disconnect the blower motor connector.

3.

Check continuity between blower motor harness connector and fan control amp. harness connector. 

Is the inspection result normal?

YES

>> Replace the blower motor.

NO

>> Repair the harnesses or connectors.

6.

CHECK CONTINUITY BETWEEN FAN CONTROL AMP. AND GROUND

Check continuity between fan control amp. harness connector and the ground. 

Is inspection result normal?

YES

>> GO TO 7.

NO

>> Repair the harnesses or connectors.

7.

CHECK A/C AUTO AMP. OUTPUT SIGNAL

1.

Connect the blower motor connector and the fan control amp. connector. 

2.

Turn the ignition switch ON.

3.

Set fan control to 1st speed. 

4.

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

Is the inspection result normal?

YES

>> Replace A/C auto amp.

NO

>> Replace fan control amp.

Component Inspection

INFOID:0000000006024047

BLOWER MOTOR

1.

CHECK BLOWER MOTOR

1.

Remove the blower motor. Refer to 

XX-XX, "*****"

. 

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 the blower motor.

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 the blower motor.

Blower motor

Fan control amp.

Continuity

Connector

Terminal

Connector

Terminal

M39

2

M81

1

Existed

Blower motor

—

Continuity

Connector

Terminal

M81

3

Ground

Existed

(+)

(

−

)

Voltage

(Approx.)

A/C auto amp.

Connector

Terminal

M50

30

Ground

2.5

BLOWER MOTOR

HAC-59

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

3.

CHECK BLOWER MOTOR

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

YES

>> INSPECTION END

NO

>> Replace the blower motor.

BLOWER MOTOR RELAY

1.

CHECK BLOWER MOTOR

1.

Remove the blower motor relay. Refer to 

XX-XX, "*****"

. 

2.

Check the continuity between the blower motor 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 the blower motor relay.

Blower motor relay

Voltage

Continuity

Terminal

3

5

ON

Existed

OFF

Not existed

JSIIA1551ZZ

HAC-60

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MAGNET CLUTCH

MAGNET CLUTCH

Component Function Check

INFOID:0000000006024049

1.

CHECK MAGNET CLUTCH OPERATION

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

XX-XX, "*****"

 (WITH I-KEY) or 

XX-XX, "*****"

 (WITHOUT I-

KEY). 

Does it operate normally?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to 

HAC-60, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006024050

1.

CHECK MAGNET CLUTCH

1.

Turn the ignition switch OFF.

2.

Disconnect the magnet clutch connector. 

3.

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

Does it operate normally?

YES

>> GO TO 2.

NO

>> Replace the compressor. 

2.

CHECK MAGNET CLUTCH CIRCUIT CONTINUITY

1.

Turn the ignition switch OFF.

2.

Disconnect the IPDM E/R connector.

3.

Check continuity between magnet clutch harness connector and IPDM E/R harness connector. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses and connectors. 

3.

CHECK FUSE

Check 10A fuse (No. 43, located in the IPDM E/R). 
NOTE:
Refer to 

XX-XX, "*****"

. 

Is the inspection result normal?

YES

>> Replace the IPDM E/R. 

NO

>> Replace the fuse after repairing the applicable circuit. 

IPDM E/R

Magnet clutch

Continuity

Connector

Terminal

Connector

Terminal

E14

64

F17

1

Existed

A/C ON SIGNAL

HAC-61

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

A/C ON SIGNAL

Component Function Check

INFOID:0000000006024051

1.

CHECK A/C ON SIGNAL

With CONSULT-III

1.

Turn the ignition switch ON.

2.

Select the “COMP REQ SIG” in “DATA MONITOR”.

3.

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

Is inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-61, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006024052

1.

CHECK A/C SWITCH SIGNAL

1.

Turn the ignition switch ON.

2.

Check output waveform between A/C auto amp. harness connector and the ground with using oscillo-
scope.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the A/C auto amp.

2.

CHECK CONTINUITY BETWEEN A/C AUTO AMP. AND BCM

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector.

3.

Disconnect the BCM connector.

4.

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

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

Monitor item

Condition

Status

COMP REQ SIG

A/C control

A/C system ON
(Indicator ON)

On

A/C system OFF
(Indicator OFF)

Off

(+)

(

−

)

Condition

Output waveform

A/C auto amp.

—

Connector

Terminal

M50

13

Ground

A/C switch ON

ZJIA1036J

A/C auto amp.

BCM

Continuity

Connector

Terminal

Connector

Terminal

M50

13

M65 (WITHOUT I-KEY)

M68 (WITH I-KEY)

27

Existed