Nissan Tiida C11. Manual - part 873

HAC-156

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

PTC HEATER CONTROL SYSTEM

2.

CHECK BLOWER RELAY GROUND CIRCUIT 

1.

Turn ignition switch OFF.

2.

Check continuity between blower relay harness connector J-1
terminal 2 and ground.

Is the inspection result normal

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK BLOWER RELAY

1.

Turn ignition switch OFF.

2.

Check blower relay. Refer to 

XX-XX, "*****"

.

Is the inspection result normal

YES

>> GO TO 4.

NO

>> Replace blower relay.

4.

CHECK POWER SUPPLY FOR PTC RELAY-1

1.

Turn ignition switch OFF.

2.

Reconnect blower relay.

3.

Turn ignition switch ON.

4.

Check voltage between PTC relay-1 harness connector E61 ter-
minals 2, 3, and ground.

Is the inspection result normal

YES

>> GO TO 5.

NO

>>

Check power supply circuit and 10A and 40A fuse (No. 16 and I, located in the fuse block).
Refer to XX.

• If fuses are OK, check harness for open circuit. Repair or replace if necessary.
• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace if necessary.

5.

CHECK POWER SUPPLY FOR PTC RELAY-2

Check voltage between PTC relay-2 harness connector E62 termi-
nals 2, 3, and ground.

Is the inspection result normal

YES

>> GO TO 6.

NO

>>

Check power supply circuit and 80A fuse (N, located in the fuse block). Refer to XX.

• If fuses are OK, check harness for open circuit. Repair or replace if necessary.
• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace if necessary.

Connector

Terminal

Ground

Continuity

Blower relay: J-1

2

Yes

WJIA2264E

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal

Ground

Battery voltage

PTC relay-2: E61

2

3

AWIIA0466ZZ

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal

Ground

Battery voltage

PTC relay-2: E62

2

3

AWIIA0466ZZ

PTC HEATER CONTROL SYSTEM

HAC-157

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

6.

CHECK POWER SUPPLY FOR PTC RELAY-3

Check voltage between PTC relay-3 harness connector E61 termi-
nals 2, 3, and ground.

Is the inspection result normal

YES

>> GO TO 5.

NO

>>

Check power supply circuit and 80A fuse (P, located in the fuse block). Refer to XX-XX.

• If fuses are OK, check harness for open circuit. Repair or replace if necessary.
• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace if necessary.

7.

CHECK PTC RELAYS

1.

Turn ignition switch OFF.

2.

Check PTC relay. Refer to 

XX-XX, "*****"

.

Is the inspection result normal

YES

>> GO TO 6.

NO

>> Replace inoperative PTC relay.

8.

CHECK PTC RELAY-1 GROUND CIRCUIT

1.

Disconnect ambient sensor, and PTC heater connectors.

2.

Turn temperature control dial clockwise until full hot position.

3.

Turn mode control dial to foot position.

4.

Start the engine (1,000 RPM minimum).

5.

Turn blower control dial to low speed.

6.

Check continuity between PTC relay-1 harness connector E61
terminal 1 and ground.

Is the inspection result normal

YES

>> GO TO 10.

NO

>> GO TO 9.

9.

CHECK CIRCUIT CONTINUITY BETWEEN PTC RELAY-1 AND BCM

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between PTC relay-1 harness connector E61
(A) terminal 1 and BCM harness connector M19 (B) terminal 64.

Is the inspection result normal

YES

>> Replace BCM. Refer to XXXX.

NO

>> Repair harness or connector.

10.

CHECK PTC RELAY-2 GROUND CIRCUIT

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal

Ground

Battery voltage

PTC relay-3: E63

2

3

AWIIA0466ZZ

Connector

Terminal

Ground

Continuity

PTC relay-1: E61

1

Yes

AWIIA0455ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

 PTC relay-1: E61

1

BCM: M19

64

Yes

AWIIA0467ZZ

HAC-158

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

PTC HEATER CONTROL SYSTEM

Check continuity between PTC relay-2 harness connector E62 termi-
nal 1 and ground.

Is the inspection result normal

YES

>> GO TO 12.

NO

>> GO TO 11.

11.

CHECK CIRCUIT CONTINUITY BETWEEN PTC RELAY-2 AND BCM

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between BCM harness connector M19 (B) ter-
minal 52 and PTC relay-1 harness connector E62 (A) terminal 1.

Is the inspection result normal

YES

>> Replace BCM. Refer to XXXX.

NO

>> Repair harness or connector.

12.

CHECK PTC RELAY-3 GROUND CIRCUIT

Check continuity between PTC relay-3 harness connector E63 termi-
nal 1 and ground.

Is the inspection result normal

YES

>> GO TO 14.

NO

>> GO TO 13.

13.

CHECK CIRCUIT CONTINUITY BETWEEN PTC RELAY-3 AND BCM

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between BCM harness connector M19 (B) ter-
minal 51 and PTC relay-3 harness connector E63 (A) terminal 1.

Is the inspection result normal

YES

>> GO TO 14.

NO

>> Repair harness or connector.

14.

CHECK VOLTAGE BETWEEN AMBIENT TEMPERATURE SENSOR AND GROUND

Connector

Terminal

Ground

Continuity

PTC relay-2: E62

1

Yes

AWIIA0455ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

PTC relay-2: E62

1 

BCM: M19

52

Yes

AWIIA0468ZZ

Connector

Terminal

Ground

Continuity

PTC relay-3: E63

1

Yes

AWIIA0455ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

PTC relay-3: E63

1

BCM: M19

51

Yes

AWIIA0469ZZ

PTC HEATER CONTROL SYSTEM

HAC-159

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1.

Turn ignition switch OFF.

2.

Reconnect BCM connector.

3.

Disconnect ambient temperature sensor.

4.

Turn ignition switch ON.

5.

Check voltage between ambient temperature sensor harness
connector E60 terminal 4 and ground.

Is the inspection result normal

YES

>> GO TO 16.

NO

>> GO TO 15.

15.

CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT TEMPERATURE SENSOR AND BCM CONTROL

UNIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between ambient temperature sensor harness
connector E60 (A) terminal 4 and BCM harness connector M18
(B) terminal 36.

4.

Check continuity between ambient temperature sensor harness
connector E60 (A) terminal 4 and ground.

Is the inspection result normal

YES

>> Replace BCM. Refer to XXXX.

NO

>> Repair harness or connector.

16.

CHECK CONTINUITY OF AMBIENT TEMPERATURE SENSOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between ambient temperature sensor harness
connector E60 (A) terminal 3 and BCM harness connector M18
(B) terminal 35.

Is the inspection result normal?

YES

>> GO TO 17.

NO

>> Repair harness or connector.

17.

CHECK AMBIENT TEMPERATURE SENSOR

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal

Ground

Ambient temperature sensor: 

E60

4

5V

AWIIA0462ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

Ambient temperature 

sensor: E60

4

BCM:  M18

36

Yes

A

Ground

Continuity

Connector

Terminal

Ambient temperature sensor: E60

4

No

AWIIA0470ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

Ambient temperature 

sensor: E64

3

BCM:  M18

35

Yes

AWIIA0471ZZ