Nissan Tiida C11. Manual - part 899

HAC-260

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

PTC HEATER CONTROL SYSTEM

NO

>> Repair harness or connector.

8.

CHECK GROUND CIRCUIT FOR PTC CONTROL UNIT 

1.

Turn ignition switch OFF.

2.

Check continuity between PTC control unit harness connector
M84 terminal 7 and ground.

Is the inspection result normal

YES

>> GO TO 9.

NO

>> Repair harness or connector.

9.

CHECK FULL HOT CIRCUIT BETWEEN PTC CONTROL UNIT AND GROUND

1.

Reconnect PTC control unit and PTC relay-1 connector.

2.

Turn ignition switch ON.

3.

Check voltage between full hot switch harness connector M65
terminal 1 and ground.

Is the inspection result normal

YES

>> GO TO 12.

NO

>> GO TO 10.

10.

CHECK CIRCUIT CONTINUITY BETWEEN FULL HOT SWITCH AND PTC CONTROL UNIT

1.

Turn ignition switch OFF.

2.

Disconnect full hot switch and PTC control unit connector.

3.

Check continuity between full hot switch harness connector M65
(A) terminal 1, 2 and PTC control unit harness connector M84
(B) terminal 3, 8.

4.

Check continuity between full hot switch harness connector M65 (A) terminal 1, 2 and ground.

Is the inspection result normal

YES

>> GO TO 11.

NO

>> Repair harness or connector.

11.

CHECK FULL HOT SWITCH

Connector

Terminal

Ground

Continuity

PTC control unit: M84

7

Yes

SJIA0912E

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal

Ground

Full hot switch: 

M65

1

Temperature control dial: 
Full hot position.

0V

Temperature control dial: 
Except full hot position.

5V

AWIIA0457ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

Full hot switch: 

M65

1

PTC control unit: 

M84

3

Yes

2

8

(+)

(-)

Continuity

Connector

Terminal

Ground

Yes

Full hot switch: M65

1

2

AWIIA0458ZZ

PTC HEATER CONTROL SYSTEM

HAC-261

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Check full hot switch. Refer to 

HAC-265, "PTC HEATER (300 WATT) : PTC Heater (300 Watt) Component

Inspection"

.

Is the inspection result normal

YES

>> Replace the PTC control unit. Refer to XX.

NO

>> Replace full hot switch. Refer to XX.

12.

CHECK VOLTAGE BETWEEN WATER TEMPERATURE SENSOR AND GROUND

Check voltage between water temperature sensor harness connec-
tor M64 terminal 1 and ground.

Is the inspection result normal

YES

>> GO TO 14.

NO

>> GO TO 13.

13.

CHECK CIRCUIT CONTINUITY BETWEEN WATER TEMPERATURE SENSOR AND PTC CONTROL

UNIT

1.

Turn ignition switch OFF.

2.

Disconnect PTC control unit.

3.

Check continuity between water temperature sensor harness
connector M64 (A) terminal 1 and PTC control unit harness con-
nector M84 (B) terminal 9.

4.

Check continuity between water temperature sensor harness
connector M64 (A) terminal 1 and ground.

Is the inspection result normal

YES

>> Replace PTC control unit. Refer to XX.

NO

>> Repair harness or connector.

14.

CHECK WATER TEMPERATURE SENSOR

Refer to 

HAC-265, "PTC HEATER (300 WATT) : PTC Heater (300 Watt) Component Inspection"

.

Is the inspection result normal

YES

>> GO TO 15.

NO

>> Replace water temperature sensor. Refer to XX.

15.

CHECK CIRCUIT CONTINUITY BETWEEN WATER TEMPERATURE SENSOR AND PTC CONTROL

UNIT

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal

Ground

5V

Water temperature sensor: 

M64

1

SJIA0920E

A

B

Continuity

Connector

Terminal

Connector

Terminal

Water temperature 

sensor: M64

1

PTC control 

unit: M84

9

Yes

A

Continuity

Connector

Terminal

Water temperature sensor: M64

1

Ground

No

SJIA0921E

HAC-262

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

PTC HEATER CONTROL SYSTEM

Check continuity between water temperature sensor harness con-
nector M64 (A) terminal 2 and PTC control unit harness connector
M84 (B) terminal 8.

Is the inspection result normal

YES

>> GO TO 16.

NO

>> Repair harness or connector.

16.

CHECK VOLTAGE BETWEEN PTC CONTROL UNIT AND GROUND

1.

Turn ignition switch ON.

2.

Check voltage between PTC heater harness connector M84 ter-
minal 10 and ground.

Is the inspection result normal

YES

>> 1.

If equipped with manual transmission, GO TO 22.

2.

If equipped with automatic transmission, GO TO 24.

NO

>> GO TO 17.

17.

CHECK CIRCUIT CONTINUITY BETWEEN PTC CONTROL UNIT AND FRONT AIR CONTROL

1.

Turn ignition switch OFF.

2.

Disconnect front air control and PTC control unit connector.

3.

Check continuity between PTC control unit harness connector
M84 (A) terminal 10 and front air control harness connector M85
(B) terminal 30.

4.

Check continuity between PTC control unit harness connector
M84 (A) terminal 10 and ground.

Is the inspection result normal

YES

>> GO TO 18.

NO

>> Repair harness or connector.

18.

CHECK VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND

A

B

Continuity

Connector

Terminal

Connector

Terminal

Water temperature 

sensor: M64

2

PTC control unit: 

M84

8

Yes

SJIA0923E

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal

Ground

5V

PTC control unit: M84

10

AWIIA0521ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

PTC control unit: M84

10

Front air control: 

M85

30

Yes

A

Ground

Continuity

Connector

Terminal

PTC control unit: M84

10

No

AWIIA0522ZZ

PTC HEATER CONTROL SYSTEM

HAC-263

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1.

Turn ignition switch OFF.

2.

Disconnect ambient sensor connector E60.

3.

Turn ignition switch ON.

4.

Check voltage between ambient sensor harness connector E60
terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 19.

NO

>> GO TO 21.

19.

CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL 

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector M86.

3.

Check continuity between ambient sensor harness connector
E60 (A) terminal 1 and front air control harness connector M85
(B) terminal 10.

Is the inspection result normal?

YES

>> GO TO 20.

NO

>> Repair harness or connector.

20.

CHECK AMBIENT SENSOR

Refer to 

HAC-265, "PTC HEATER (300 WATT) : PTC Heater (300 Watt) Component Inspection"

.

Is the inspection result normal?

YES

>> 1.

Replace front air control. Refer to XX.

2.

Go to self-diagnosis 

HAC-213, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis

STEP-2. Confirm that code No. 20 is displayed.

NO

>> 1.

Replace ambient sensor. Refer to XX.

2.

Go to self-diagnosis 

HAC-213, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis

STEP-2. Confirm that code No. 20 is displayed.

21.

CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector M86.

3.

Check continuity between ambient sensor harness connector
E60 (A) terminal 2 and front air control harness connector M86
(B) terminal 3.

4.

Check continuity between ambient sensor harness connector
E34 (A) terminal 2 and ground.

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal 

Ground

Ambient sensor: 

E60

2

5V

AWIIA0307ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

Ambient sensor: 

E60

1

Front air control: 

M86

10

Yes

AWIIA0558ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

Ambient sensor: 

E60

2

Front air control: 

M86

3

Yes

AWIIA0559ZZ