2007 NISSAN TIIDA Service Repair Manual

Page 3377 of 5883

NISSAN TIIDA 2007  Service Repair Manual HAC-44
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
PTC HEATER CONTROL SYSTEM
 PTC heater
PTC relays
 Ambient sensor
 Blower relay
System Operation
PTC heater system starts when all the followi

Page 3378 of 5883

NISSAN TIIDA 2007  Service Repair Manual PTC HEATER CONTROL SYSTEM
HAC-45
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
MA
B
HAC
N
O
P
The PTC control unit is attached on the A/C unit assembly. It controls
PTC heater by a

Page 3379 of 5883

NISSAN TIIDA 2007  Service Repair Manual HAC-46
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
PTC HEATER CONTROL SYSTEM
2.CHECK BLOWER RELAY GROUND CIRCUIT 
1. Turn ignition switch OFF.
2. Check continuity between blower relay harness conn

Page 3380 of 5883

NISSAN TIIDA 2007  Service Repair Manual PTC HEATER CONTROL SYSTEM
HAC-47
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
MA
B
HAC
N
O
P
6.CHECK POWER SUPPLY FOR PTC RELAY-3
Check voltage between PTC relay-3 harness connect

Page 3381 of 5883

NISSAN TIIDA 2007  Service Repair Manual HAC-48
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
PTC HEATER CONTROL SYSTEM
Check continuity between PTC relay-2 harness connector E62 termi-
nal 1 and ground.
Is the inspection result normal
YES

Page 3382 of 5883

NISSAN TIIDA 2007  Service Repair Manual PTC HEATER CONTROL SYSTEM
HAC-49
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
MA
B
HAC
N
O
P
1. Turn ignition switch OFF.
2. Reconnect BCM connector.
3. Disconnect ambient tempera

Page 3383 of 5883

NISSAN TIIDA 2007  Service Repair Manual HAC-50
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
PTC HEATER CONTROL SYSTEM
Refer to XX-XX, "*****".
Is the inspection result normal?
YES >> GO TO 18.
NO >> Replace ambient temperature sensor. Re

Page 3384 of 5883

NISSAN TIIDA 2007  Service Repair Manual PTC HEATER CONTROL SYSTEM
HAC-51
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
MA
B
HAC
N
O
P
Check continuity between relay terminals 3 and 5.
If NG, replace the blower relay. Ref