Nissan Versa Note. Manual - part 501

DEFROSTER POSITION SIGNAL

HAC-39

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

DEFROSTER POSITION SIGNAL

Description

INFOID:0000000009703515

• Each signal is sent to BCM by setting the D/F or DEF position.

• BCM judges the change of the air inlet and recognition of A/C switch ON or OFF according to input switch

signal.

Component Function Check

INFOID:0000000009703516

1.

CHECK DEFROSTER POSITION SIGNAL

With CONSULT

1. Turn the ignition switch ON.

2. Select the “FR DEF SW” on “DATA MONITOR” in BCM.

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

Is inspection result normal?

YES

>> Inspection End.

NO

>> Refer to 

HAC-39, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009703517

1.

CHECK VOLTAGE BETWEEN FRONT AIR CONTROL AND GROUND

1. Turn the ignition switch OFF.

2. Disconnect the front air control connector.

3. Turn the ignition switch ON.

4. Check voltage between front air control harness connector and ground.

Is inspection result normal?

YES

>> Replace the front air control. Refer to 

HAC-56, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM

1. Turn the ignition switch OFF.

2. Disconnect the BCM connector.

3. Check continuity between front air 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 FRONT AIR CONTROL AND GROUND

Check continuity between front air control harness connector and the ground.

Monitor item

Condition

Status

FR DEF SW

MODE position

D/F or DEF

On

VENT, B/L or FOOT

Off

(+)

(

−)

Voltage

(Approx.)

Front air control

—

Connector

Terminal

M65

16

Ground

Battery voltage

Front air control

BCM

Continuity

Connector

Terminal

Connector

Terminal

M65

16

M19 (without Intelligent Key)

31

Yes

M98 (with Intelligent Key)

103

HAC-40

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

DEFROSTER POSITION SIGNAL

Is inspection result normal?

YES

>> Replace the BCM. Refer to 

BCS-70, "Removal and Installation"

 (with Intelligent Key) or 

BCS-127,

"Removal and Installation"

 (without Intelligent Key).

NO

>> Repair the harness or connector.

Front air control

—

Continuity

Connector

Terminal

M65

16

Ground

No

THERMO CONTROL AMPLIFIER

HAC-41

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

THERMO CONTROL AMPLIFIER

Component Function Check

INFOID:0000000009702394

1.

CHECK A/C ON SIGNAL

With CONSULT

1. Turn ignition switch ON.

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

3. Select “THERMO AMP” in “DATA MONITOR” mode, and check status under the following condition.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to 

HAC-41, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009702395

1.

CHECK FUSE

1. Turn ignition switch OFF.

2. Check 10A fuse (No. 21, located in fuse block (J/B)].

NOTE:

Refer to 

PG-58, "Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit. 

2.

CHECK THERMO CONTROL AMP. POWER SUPPLY

1. Turn ignition switch OFF. 

2. Disconnect thermo control amp. connector. 

3. Turn ignition switch ON.

4. Check voltage between thermo control amp. harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector between thermo control amp. and fuse.

3.

CHECK THERMO CONTROL AMP. GROUND CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Check continuity between thermo control amp. harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

Monitor item

Condition

Status

THERMO AMP

Ignition switch

ON

On

OFF

Off

+

−

Voltage

(Approx.)

Thermo control amp.

Connector

Terminal

M42

3

Ground

Battery voltage

Thermo control amp.

—

Continuity

Connector

Terminal

M42

1

Ground

Yes

HAC-42

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

THERMO CONTROL AMPLIFIER

4.

CHECK THERMO CONTROL AMP. SIGNAL

1. Turn ignition switch ON.

2. Check voltage between thermo control amp. harness connector and ground. 

Is the inspection result normal?

YES

>> Replace thermo control amp.

NO

>> GO TO 5.

5.

CHECK THERMO CONTROL AMP. SIGNAL CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

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

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-70, "Removal and Installation"

 (with Intelligent Key) or 

BCS-127,

"Removal and Installation"

 (without Intelligent Key).

NO

>> Repair harness or connector.

+

−

Voltage

(Approx.)

Thermo control amp.

Connector

Terminal

M42

2

Ground

Battery voltage

Thermo control amp.

BCM

Continuity

Connector

Terminal

Connector

Terminal

M42

2

M18 (without Intelligent Key)

26

Yes

M97 (with Intelligent Key)