2007 NISSAN TIIDA Service Repair Manual

Page 3601 of 5883

NISSAN TIIDA 2007  Service Repair Manual HAC-268
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
PTC HEATER CONTROL SYSTEM
 PTC heater
PTC relays
 Ambient sensor
 Blower relay
System Operation
PTC heater system starts when all the

Page 3602 of 5883

NISSAN TIIDA 2007  Service Repair Manual PTC HEATER CONTROL SYSTEM
HAC-269
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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 hea

Page 3603 of 5883

NISSAN TIIDA 2007  Service Repair Manual HAC-270
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
PTC HEATER CONTROL SYSTEM
2.CHECK BLOWER RELAY GROUND CIRCUIT 
1. Turn ignition switch OFF.
2. Check continuity between blower relay harn

Page 3604 of 5883

NISSAN TIIDA 2007  Service Repair Manual PTC HEATER CONTROL SYSTEM
HAC-271
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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

Page 3605 of 5883

NISSAN TIIDA 2007  Service Repair Manual HAC-272
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
PTC HEATER CONTROL SYSTEM
Check continuity between PTC relay-2 harness connector E62 termi-
nal 1 and ground.
Is the inspection result no

Page 3606 of 5883

NISSAN TIIDA 2007  Service Repair Manual PTC HEATER CONTROL SYSTEM
HAC-273
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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

Page 3607 of 5883

NISSAN TIIDA 2007  Service Repair Manual HAC-274
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
PTC HEATER CONTROL SYSTEM
Refer to XX-XX, "*****".
Is the inspection result normal?
YES >> GO TO 18.
NO >> Replace ambient temperature se

Page 3608 of 5883

NISSAN TIIDA 2007  Service Repair Manual PTC HEATER CONTROL SYSTEM
HAC-275
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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 re