Nissan Versa Sedan. Manual — part 495

BLOWER FAN ON SIGNAL

HAC-35

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

BLOWER FAN ON SIGNAL

Component Function Check

INFOID:0000000009269796

1.

CHECK BLOWER FAN ON SIGNAL

With CONSULT

1. Turn ignition switch ON.

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

3. Select “FAN ON SIG” in “DATA MONITOR” mode, and check status under the following condition.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to

HAC-35, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009269797

Regarding Wiring Diagram information, refer to

HAC-20, "Wiring Diagram"

or

HAC-26, "Wiring Diagram"

.

1.

CHECK BLOWER FAN ON SIGNAL

1. Turn ignition switch OFF.

2. Disconnect front air control harness connector.

3. Turn ignition switch ON.

4. Check output waveform between front air control and ground with using oscilloscope.

Is the inspection result normal?

YES

>> Replace front air control. Refer to

HAC-48, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK BLOWER FAN ON SIGNAL CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

3. Check continuity front air control harness connector and BCM harness connector.

Monitor item

Condition

Status

FAN ON SIG

Fan control dial

Except OFF position

On

OFF position

Off

+

−

Output waveform

Front air control

Connector

Terminal

M33

5

Ground

PKIB4960J

Front air control

BCM

Continuity

Connector

Terminal

Connector

Terminal

M33

5

M18 (without Intelligent Key system)

28

Yes

M97 (with Intelligent Key system)

HAC-36

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

BLOWER FAN ON SIGNAL

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK BLOWER FAN ON SIGNAL CIRCUIT FOR SHORT

Check continuity between front air control harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to

BCS-69, "Removal and Installation"

or

BCS-122, "Removal and Installa-

tion"

.

NO

>> Repair harness or connector.

Front air control

—

Continuity

Connector

Terminal

M33

5

Ground

No

A/C INDICATOR

HAC-37

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

A/C INDICATOR

Diagnosis Procedure

INFOID:0000000009269798

Regarding Wiring Diagram information, refer to

HAC-20, "Wiring Diagram"

or

HAC-26, "Wiring Diagram"

.

1.

CHECK A/C INDICATOR POWER SUPPLY

1. Turn ignition switch ON.

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

Is the inspection result normal?

YES

>> Replace front air control. Refer to

HAC-48, "Removal and Installation"

.

NO

>> Repair harness or connector between front air control and fuse.

+

−

Voltage (V)

(Approx.)

Front air control

Connector

Terminal

M33

15

Ground

Battery voltage

HAC-38

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

FRONT BLOWER MOTOR

FRONT BLOWER MOTOR

Description

INFOID:0000000009269799

The front blower motor utilizes a brush-less motor with a rotating magnet. Quietness is improved over previous

motors where the brush was the point of contact and the coil rotated.

Diagnosis Procedure

INFOID:0000000009269800

Regarding Wiring Diagram information, refer to

HAC-20, "Wiring Diagram"

or

HAC-26, "Wiring Diagram"

.

1.

CHECK SYMPTOM

Check symptom (A or B).

Which symptom is detected?

A

>> GO TO 2.

B

>> GO TO 7.

2.

CHECK FUSE

1. Turn ignition switch OFF.

2. Check 15A fuses (Nos. 20 and 22, located in fuse block (J/B)].

NOTE:

Refer to

PG-60, "Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK FRONT BLOWER MOTOR POWER SUPPLY

1. Disconnect front blower motor connector.

2. Turn ignition switch ON.

3. Check voltage between front blower motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK BLOWER RELAY

1. Turn ignition switch OFF.

2. Check blower relay. Refer to

HAC-40, "Component Inspection (Blower Relay)"

.

Is the inspection result normal?

YES

>> Repair harness or connector between front blower motor and fuse.

NO

>> Replace blower relay.

5.

CHECK FAN SWITCH GROUND CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

Symptom

A

Front blower motor does not operate at any dial position

B

Front blower motor does not operate at any dial position other than 4th,
or operation speed is not normal.

+

−

Voltage (V)

(Approx.)

Front blower motor

Connector

Terminal

M62

1

Ground

Battery voltage