Nissan Qashqai J11. Manual — part 1162

HAC-284

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

A/C AMP.

A/C AMP. : Diagnosis Procedure

INFOID:0000000010499420

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10 A fuse [No. 14 (without stop/start system), located in fuse block (J/B)], [No. 76 (with stop/start
system)].
NOTE:
Refer to

PG-104, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECK A/C AMP. ACCESSORY POWER SUPPLY

1.

Disconnect A/C amp. connector.

2.

Turn ignition switch ON.

3.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector between A/C amp. and fuse.

3.

CHECK A/C AMP. GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> Replace A/C amp. Refer to

HAC-295, "Removal and Installation"

.

NO

>> Repair harness or connector.

+

−

Voltage

A/C amp.

Connector

Terminal

M50

3

Ground

11 - 14 V

A/C amp.

—

Continuity

Connector

Terminal

M50

19

Ground

Existed

BLOWER MOTOR

HAC-285

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

BLOWER MOTOR

Diagnosis Procedure

INFOID:0000000010499422

1.

CHECK SYMPTOM

Check symptom (A, B or C).

Which symptom is detected?

A

>> GO TO 2.

B

>> GO TO 11.

C

>> GO TO 13.

2.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check following fuses.

-

20 A fuses [Nos. 7 and 17, located in the fuse block (J/B)]

NOTE:
Refer to

PG-104, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

3.

CHECK BLOWER MOTOR POWER SUPPLY

1.

Disconnect blower motor connector.

2.

Turn ignition switch ON.

3.

Check voltage between 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-288, "Component Inspection (Blower Relay)"

.

Is the inspection result normal?

YES

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

NO

>> Replace blower relay.

5.

CHECK FAN CONTROL AMP. POWER SUPPLY (SOURCE) CIRCUIT

1.

Turn ignition switch OFF.

2.

Connect blower motor connector.

3.

Disconnect fan control amp. connector.

4.

Turn ignition switch ON.

5.

Check voltage between fan control amp. harness connector and ground.

Symptom

A

Blower motor does not operate.

B

Blower motor operates at the maximum fan
speed and fan speed cannot be selected.

Blower motor can be switched to OFF.

C

Blower motor cannot be switched to OFF.

+

−

Voltage

Blower motor

Connector

Terminal

M357

1

Ground

11 – 14 V

HAC-286

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

BLOWER MOTOR

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK FAN CONTROL AMP. POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect blower motor connector.

3.

Check continuity between fan control amp. harness connector and blower motor harness connector.

Is the inspection result normal?

YES

>> Replace blower motor. Refer to

VTL-17, "Removal and Installation"

.

NO

>> Repair harness or connector.

7.

CHECK FAN CONTROL AMP. GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Check continuity between fan control amp. harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair harness or connector.

8.

CHECK FAN CONTROL AMP. CONTROL SIGNAL (GATE) CIRCUIT FOR OPEN

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

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair harness or connector.

9.

CHECK FAN CONTROL AMP. CONTROL SIGNAL CIRCUIT FOR SHORT

Check continuity between fan control amp. harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair harness or connector.

+

−

Voltage

Fan control amp.

Connector

Terminal

M181

1

Ground

11 – 14 V

Fan control amp.

Blower motor

Continuity

Connector

Terminal

Connector

Terminal

M181

1

M357

2

Existed

Fan control amp.

—

Continuity

Connector

Terminal

M181

3

Ground

Existed

Fan control amp.

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

M181

2

M50

1

Existed

Fan control amp.

—

Continuity

Connector

Terminal

M181

2

Ground

Not existed

BLOWER MOTOR

HAC-287

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL HEATER ]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

10.

CHECK FAN CONTROL AMP.

Check fan control amp. Refer to

HAC-288, "Component Inspection (Fan Control Amp.)"

.

Is the inspection result normal?

YES

>> Replace A/C amp. Refer to

HAC-295, "Removal and Installation"

.

NO

>> Replace fan control amp. Refer to

HAC-298, "Removal and Installation"

.

11.

CHECK A/C AMP. IGNITION POWER SUPPLY FEEDBACK SIGNAL

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair harness or connector between A/C amp. and fuse.

12.

CHECK BLOWER MOTOR FEEDBACK SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect blower motor connector and A/C amp. connector.

3.

Check continuity between blower motor harness connector and A/C amp. harness connector.

Is the inspection result normal?

YES

>> Replace A/C amp. Refer to

HAC-295, "Removal and Installation"

.

NO

>> Repair harness or connector.

13.

CHECK BLOWER MOTOR FEEDBACK SIGNAL CIRCUIT AND FAN CONTROL AMP. POWER SUPPLY

CIRCUIT FOR SHORT

1.

Turn ignition switch OFF.

2.

Disconnect following connectors.

-

Blower fan motor

-

Fan control amp.

-

A/C amp.

3.

Check continuity between blower motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 14.

NO

>> Repair harness or connector.

14.

CHECK FAN CONTROL AMP. CONTROL SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY

Check harness between fan control amp. harness connector and A/C amp. harness connector for short to
power supply.

+

−

Voltage

A/C amp.

Connector

Terminal

M50

4

Ground

11 – 14 V

Blower motor

A/C amp.

Continuity

Connector

Terminal

Connector

Terminal

M357

2

M50

17

Existed

Blower motor

—

Continuity

Connector

Terminal

M357

2

Ground

Not existed