Nissan Cube. Manual - part 556

 

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Nissan Cube. Manual - part 556

 

 

HAC-62

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

BLOWER FAN ON SIGNAL

BLOWER FAN ON SIGNAL

Component Function Check

INFOID:0000000009951009

1.

CHECK BLOWER FAN ON SIGNAL

With CONSULT

1.

Turn the ignition switch ON.

2.

Select the “FAN REQ SIG” in “DATA MONITOR”

3.

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

Is inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-62, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009951010

1.

CHECK BLOWER FAN ON SIGNAL

1.

Turn the ignition switch ON.

2.

Check output waveform between A/C auto amp. and ground with using the oscilloscope.

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 A/C auto amp. harness connector and BCM harness connector.

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

3.

CHECK CONTINUITY BETWEEN A/C AUTO AMP. AND GROUND

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

Monitor item

Condition

Status

FAN REQ SIG

Fan control switch

OFF position

Off

Except OFF position

On

(+)

(

)

Condition

Output waveform

A/C auto amp.

Connector

Terminal

M51

35

Ground

• Ignition switch ON
• Fan speed: Manual 1st

SJIA1425J

A/C auto amp.

BCM

Continuity

Connector

Terminal

Connector

Terminal

M51

35

M65 (WITHOUT I-KEY)

M68 (WITH I-KEY)

28

Existed

BLOWER FAN ON SIGNAL

HAC-63

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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 

BCS-88, "Exploded View"

 (WITH I-KEY) or 

BCS-155, "Exploded

View"

 (WITHOUT I-KEY).

NO

>> Repair the harnesses or connectors.

A/C auto amp.

Continuity

Connector

Terminal

M51

35

Ground

Not existed

HAC-64

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

A/C AUTO AMP.

A/C AUTO AMP. : Diagnosis Procedure

INFOID:0000000009951011

1.

CHECK FUSE

Check 10A fuses [Nos. 2, 10 and 16, located in the fuse block (J/B)].
NOTE:
Refer to 

PG-77, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the fuse after repairing the applicable circuit. 

2.

CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT-1

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector. 

3.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

3.

CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT-2

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

Is inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 5.

4.

CHECK A/C AUTO AMP. CIRCUIT CONTINUITY

1.

Turn the ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair the harnesses or connectors.

5.

CHECK BLOWER MOTOR RELAY POWER SUPPLY

1.

Turn the ignition switch OFF.

2.

Disconnect the blower motor relay from the fuse block (J/B). Refer to 

PG-77, "Fuse, Connector and Termi-

nal Arrangement"

.

(+)

(

)

Voltage

A/C auto amp.

Ignition switch position

Connector

Terminal

OFF

ACC

ON

M50

4

Ground

Battery voltage

Battery voltage

Battery voltage

5

Approx. 0 V

Approx. 0 V

Battery voltage

(+)

(

)

Voltage

A/C auto amp.

Ignition switch position

Connector

Terminal

OFF

ACC

ON

M50

9

Ground

Approx. 0 V

Approx. 0 V

Battery voltage

A/C auto amp.

Continuity

Connector

Terminal

M50

16

Ground

Existed

POWER SUPPLY AND GROUND CIRCUIT

HAC-65

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

3.

Turn the ignition switch ON.

4.

Check voltage between the ground and the connector on the fuse block side where blower motor relay
was installed. Refer to 

PG-75, "Description"

.

Is inspection result normal?

YES

>> GO TO 6.

NO

>> Repair the power supply circuit. Refer to 

PG-6, "Wiring Diagram - BATTERY POWER SUPPLY -"

.

6.

CHECK BLOWER MOTOR RELAY

Perform the blower motor component inspection. Refer to 

HAC-57, "Component Inspection"

.

Is inspection result normal?

YES

>> Repair the harness or connector between blower motor relay and A/C auto amp.

NO

>> Replace blower motor relay.

(+)

(

)

Voltage

(Approx.)

Fuse block (J/B)

1

Ground

Battery voltage

3

 

 

 

 

 

 

 

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