2001 NISSAN X-TRAIL Service Repair Manual

Page 3345 of 3833

NISSAN X-TRAIL 2001  Service Repair Manual TROUBLE DIAGNOSIS
ATC-69
C
D
E
F
G
H
I
K
L
MA
B
AT C
SYSTEM DESCRIPTION
Component Parts
Intake door control system components are:
●Auto amp.
●Intake door motor (LCU)
●A/C LAN system (PBR built-

Page 3346 of 3833

NISSAN X-TRAIL 2001  Service Repair Manual ATC-70
TROUBLE DIAGNOSIS
DIAGNOSTIC PROCEDURE
SYMPTOM: Intake door motor does not operate normally.
Perform diagnostic procedure for ATC-59, "
LAN System Circuit" .
Blower Motor CircuitEJS002F

Page 3347 of 3833

NISSAN X-TRAIL 2001  Service Repair Manual TROUBLE DIAGNOSIS
ATC-71
C
D
E
F
G
H
I
K
L
MA
B
AT C
INSPECTION FLOW
*1ATC-47, "PROCEDURE".*2ATC-100, "Ambient Sensor Circuit".*3ATC-102, "In-vehicle Sensor Circuit".
*4ATC-105

Page 3348 of 3833

NISSAN X-TRAIL 2001  Service Repair Manual ATC-72
TROUBLE DIAGNOSIS
SYSTEM DESCRIPTION
Component Parts
Fan speed control system components are:
●Auto amp.
●A/C LAN system (PBR built-in air mix door motor, mode door motor and intake door mo

Page 3349 of 3833

NISSAN X-TRAIL 2001  Service Repair Manual TROUBLE DIAGNOSIS
ATC-73
C
D
E
F
G
H
I
K
L
MA
B
AT C
Starting Fan Speed Control
Start Up From COLD SOAK Condition (Automatic mode)
In a cold start up condition where the engine coolant temperature is

Page 3350 of 3833

NISSAN X-TRAIL 2001  Service Repair 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 wi

Page 3351 of 3833

NISSAN X-TRAIL 2001  Service Repair 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
Disconnect blower motor  harness connector.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 15A

Page 3352 of 3833

NISSAN X-TRAIL 2001  Service Repair Manual ATC-76
TROUBLE DIAGNOSIS
5. CHECK GROUND CIRCUIT FOR FAN CONTROL AMP.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector.
6. CHECK FOR AUTO AMP. OUTPUT
Reconnect the fan control amp. harness co