Nissan Tiida C11. Instruction — 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
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