Nissan March K13. Manual - part 377

HAC-42

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

SYSTEM SETTING

NOTE:
When battery cable is disconnected or battery voltage is below 10 V, trimmer operation is canceled. Air distri-
bution ratio set becomes that of initial condition.

Inlet Port Memory Function

INFOID:0000000006057627

DESCRIPTION

When ignition switch is turned from OFF to ON, inlet port can be set to AUTO or manual.

Operating procedures for this trimmer are as per the following:

1.

Begin self-diagnosis STEP-5 mode. Refer to 

HAC-22, "Diagnosis Description"

.

2.

Press fan (UP: +) switch to set system in auxiliary mode.

3.

Press FRE/REC switch as desired.

NOTE:
When battery cable is disconnected or battery voltage is below 10 V, memory function is canceled. Memory
function set becomes that of initial condition.

Display

Defroster door position

Automatically controls the FOOT mode

Manually controls the FOOT mode

(Initial setting)

OPEN

OPEN

OPEN

CLOSE

CLOSE

OPEN

CLOSE

CLOSE

FRE indicator

REC indicator

Setting status

Setting changeover 

method

FRE

REC

OFF

ON

Shall be memorized (Initial set-
ting)

Shall be memorized. (Initial set-
ting)

FRE/REC switch: ON

ON

ON

Shall be memorized.

Shall be memorized.

ON

OFF

Shall be memorized.

Shall not be memorized.

OFF

OFF

Shall not be memorized.

Shall not be memorized.

AMBIENT SENSOR

HAC-43

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

DTC/CIRCUIT DIAGNOSIS

AMBIENT SENSOR

Diagnosis Procedure

INFOID:0000000006024024

1.

CHECK AMBIENT SENSOR POWER SUPPLY CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the ambient sensor connector. 

3.

Turn the ignition switch ON.

4.

Check voltage between ambient sensor harness connector and the ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK AMBIENT SENSOR GROUND CIRCUIT CONTINUITY 

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector. 

3.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

3.

CHECK AMBIENT SENSOR

Check the ambient sensor components. Refer to 

HAC-44, "Component Inspection"

. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the ambient sensor. 

4.

CHECK AMBIENT SENSOR OPEN CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector. 

3.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair the harnesses or connectors.

5.

CHECK AMBIENT SENSOR SHORT CIRCUIT

Check continuity between ambient sensor harness connector and the ground. 

(+)

(

−

)

Voltage

(Approx.)

Ambient sensor

—

Connector

Terminal

E53

1

Ground

5 V

Ambient sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

E53

2

M50

37

Existed

Ambient sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

E53

1

M51

39

Existed

HAC-44

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

AMBIENT SENSOR

Is the inspection result normal?

YES

>> Replace the A/C auto amp.

NO

>> Repair the harnesses or connectors.

Component Inspection

INFOID:0000000006024025

1.

CHECK AMBIENT SENSOR

1.

Turn the ignition switch OFF.

2.

Remove the ambient sensor. Refer to 

XX-XX, "*****"

. 

3.

Check the resistance between the ambient sensor terminals. Refer to the applicable table for the normal
value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the ambient sensor. 

Ambient sensor

—

Continuity

Connector

Terminal

E53

1

Ground

Not existed

Terminal

Condition

Resistance: k

Ω

Temperature: 

°

C (

°

F) 

1

2

−

15 (5)

12.73

−

10 (14)

9.92

−

5 (23)

7.80

0 (32) 

6.19

5 (41) 

4.95

10 (50)

3.99

15 (59)

3.24

20 (68)

2.65

25 (77)

2.19

30 (86)

1.81

35 (95)

1.51

40 (104)

1.27

45 (113)

1.07

IN-VEHICLE SENSOR

HAC-45

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

IN-VEHICLE SENSOR

Diagnosis Procedure

INFOID:0000000006024027

1.

CHECK IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the in-vehicle sensor connector. 

3.

Turn the ignition switch ON.

4.

Check voltage between in-vehicle sensor harness connector and the ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK IN-VEHICLE SENSOR GROUND CIRCUIT CONTINUITY

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector. 

3.

Check continuity between in-vehicle sensor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

3.

CHECK IN-VEHICLE SENSOR

Check the in-vehicle sensor components. Refer to 

HAC-46, "Component Inspection"

. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the in-vehicle sensor. 

4.

CHECK IN-VEHICLE SENSOR OPEN CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector. 

3.

Check continuity between in-vehicle sensor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair the harnesses or connectors.

5.

CHECK IN-VEHICLE SENSOR SHORT CIRCUIT

Check continuity between in-vehicle sensor harness connector and the ground. 

(+)

(

−

)

Voltage

(Approx.)

In-vehicle sensor

—

Connector

Terminal

M41

1

Ground

5 V

In-vehicle sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M41

2

M50

40

Existed

In-vehicle sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M41

1

M50

19

Existed