Nissan March K13. Manual - part 393

HAC-106

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

A/C SWITCH

Is inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 5.

4.

CHECK CONTINUITY A/C CONTROL GROUND CIRCUIT

1.

Turn the ignition switch OFF.

2.

Check continuity between A/C control harness connector and the ground. 

Is inspection result normal?

YES

>> Replace the A/C switch (A/C control).

NO

>> Repair the harness or connector.

5.

CHECK CONTINUITY BETWEEN A/C CONTROL AND THERMO CONTROL AMP.

1.

Turn the ignition switch OFF.

2.

Disconnect the thermo control amp. connector.

3.

Check continuity between A/C control harness connector and thermo control amp. harness connector.

Is inspection result normal?

YES

>> GO TO 6.

NO

>> Repair the harness or connector.

6.

CHECK CONTINUITY BETWEEN THERMO CONTROL AMP. AND BCM

Check continuity between thermo control amp. harness connector and BCM harness connector.

Is inspection result normal?

YES

>> GO TO 7.

NO

>> Repair the harness or connector.

7.

CHECK CONTINUITY BETWEEN A/C CONTROL AND GROUND

Check continuity between A/C control harness connector and the ground.

(+)

(

−

)

Output waveform

A/C control

—

Connector

Terminal

M53

14

Ground

Approx. 1.0

∼

1.5 V

JPMIA0012GB

A/C control

—

Continuity

Connector

Terminal

M53

6

Ground

Existed

A/C control

Thermo control amp.

Continuity

Connector

Terminal

Connector

Terminal

M53

14

M44

2

Existed

Thermo control amp.

BCM

Continuity

Connector

Terminal

Connector

Terminal

M44

3

M65

27

Existed

A/C SWITCH

HAC-107

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is inspection result normal?

YES

>> Replace the BCM. Refer to 

XX-XX, "*****"

.

NO

>> Repair the harness or connector.

A/C control

—

Continuity

Connector

Terminal

M53

12

Ground

Not existed

HAC-108

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

BLOWER FAN ON SIGNAL

BLOWER FAN ON SIGNAL

Component Function Check

INFOID:0000000006024133

1.

CHECK BLOWER FAN ON SIGNAL

With CONSULT-III

1.

Turn the ignition switch ON.

2.

Select the “FAN ON SIG” on “DATA MONITOR” in BCM.

3.

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

Is inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-108, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006024134

1.

CHECK BLOWER FAN ON SIGNAL OUTPUT

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C control connector.

3.

Turn the ignition switch ON.

4.

Check output waveform between A/C control harness connector and the ground with using oscilloscope.

Is inspection result normal?

YES

>> Replace the A/C control.

NO

>> GO TO 2.

2.

CHECK CONTINUITY BETWEEN A/C CONTROL AND BCM

1.

Turn the ignition switch OFF.

2.

Disconnect the BCM connector.

3.

Check continuity between A/C control harness connector and BCM harness connector.

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harness or connector.

3.

CHECK CONTINUITY BETWEEN A/C CONTROL AND GROUND

Monitor item

Condition

Status

FAN ON SIG

Fan control dial

OFF position

Off

Except OFF position

On

(+)

(

−

)

Output waveform

A/C control

—

Connector

Terminal

M53

5

Ground

Approx. 1.5

∼

2.0 V

PIIB7730J

A/C control

BCM

Continuity

Connector

Terminal

Connector

Terminal

M53

5

M65

28

Existed

BLOWER FAN ON SIGNAL

HAC-109

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Check continuity between A/C control harness connector and the ground.

Is inspection result normal?

YES

>> Replace the BCM. Refer to 

XX-XX, "*****"

.

NO

>> Repair the harness or connector.

A/C control

—

Continuity

Connector

Terminal

M53

5

Ground

Not existed