2003 NISSAN TEANA Service Manual

Page 449 of 3502

NISSAN TEANA 2003  Service Manual TROUBLE DIAGNOSIS
ATC-71
C
D
E
F
G
H
I
K
L
MA
B
AT C
 
COMPONENT DESCRIPTION
Intake Door Motor
The intake door motor is attached to the blower unit. It rotates so that
air is drawn from inlets set by

Page 450 of 3502

NISSAN TEANA 2003  Service Manual ATC-72
TROUBLE DIAGNOSIS
 
Blower Motor CircuitBJS000G5
SYMPTOM: Blower motor operation is malfunctioning.
INSPECTION FLOW
*1AT C - 5 4 ,  "Operational Check"*2ATC-105, "Intake Sensor Circuit"*3AT C -

Page 451 of 3502

NISSAN TEANA 2003  Service Manual TROUBLE DIAGNOSIS
ATC-73
C
D
E
F
G
H
I
K
L
MA
B
AT C
 
SYSTEM DESCRIPTION
Component Parts
Fan speed control system components are:
Unified meter and A/C amp.
A/C LAN system (PBR built-in mode door m

Page 452 of 3502

NISSAN TEANA 2003  Service Manual ATC-74
TROUBLE DIAGNOSIS
 
Blower Speed Compensation
Sunload
When the in-vehicle temperature and the set temperature are very close, the blower will be operating at low
speed. The low speed will vary

Page 453 of 3502

NISSAN TEANA 2003  Service Manual TROUBLE DIAGNOSIS
ATC-75
C
D
E
F
G
H
I
K
L
MA
B
AT C
 
1. CHECK POWER SUPPLY FOR BLOWER MOTOR
1. Disconnect blower motor connector.
2. Turn ignition switch ON.
3. Check voltage between blower motor ha

Page 454 of 3502

NISSAN TEANA 2003  Service Manual ATC-76
TROUBLE DIAGNOSIS
 
5. CHECK GROUND CIRCUIT FOR FAN CONTROL AMP.
1. Turn ignition switch OFF.
2. Disconnect fan control amp. connector.
3. Check continuity between fan control amp. harness conn

Page 455 of 3502

NISSAN TEANA 2003  Service Manual TROUBLE DIAGNOSIS
ATC-77
C
D
E
F
G
H
I
K
L
MA
B
AT C
 
8. CHECK FAN CONTROL AMP.
1. Turn ignition switch OFF.
2. Disconnect fan control amp. connector.
3. Check continuity between fan control amp. con

Page 456 of 3502

NISSAN TEANA 2003  Service Manual ATC-78
TROUBLE DIAGNOSIS
 
Magnet Clutch CircuitBJS000G6
SYMPTOM: Magnet clutch does not engage.
INSPECTION FLOW
*1ATC-105, "Intake Sensor Circuit"*2ATC-96, "Ambient Sensor Circuit"*3AT C - 4 7 ,  "FU