2003 NISSAN X-TRAIL Electronic Repair Manual

Page 633 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual TROUBLE DIAGNOSIS
ATC-55
C
D
E
F
G
H
I
K
L
MA
B
AT C
DIAGNOSTIC PROCEDURE
SYMPTOM: A/C system does not come on.
1.CHECK POWER SUPPLY CIRCUIT FOR AUTO AMP.
OK or NG
OK >> GO TO 2.
NG >> Check 10A fuses

Page 634 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual ATC-56
TROUBLE DIAGNOSIS
LAN System Circuit
EJS001H0
SYMPTOM: Mode door motor, intake door motor and/or air mix door motor does not operate normally.
DIAGNOSTIC PROCEDURE
1.CHECK POWER SUPPLY FOR AUTO

Page 635 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual TROUBLE DIAGNOSIS
ATC-57
C
D
E
F
G
H
I
K
L
MA
B
AT C
3.CHECK POWER SUPPLY FOR MOTOR SIDE
OK or NG
OK >> GO TO 4.
NG >> Replace harness or connector.
4.CHECK SIGNAL FOR MOTOR SIDE
OK or NG
OK >> GO TO

Page 636 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual ATC-58
TROUBLE DIAGNOSIS
7.CHECK MODE DOOR MOTOR OPERATION
1. Disconnect mode door motor and air mix door motor connector.
2. Reconnect mode door motor connector and confirm the mode door motor operat

Page 637 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual TROUBLE DIAGNOSIS
ATC-59
C
D
E
F
G
H
I
K
L
MA
B
AT C
INSPECTION FLOW
*1 Discharge air flowAT C - 2 8*7 Sunload sensor circuitAT C -9 8*13 Symptom tableAT C - 3 0
*2 Operational checkAT C -5 1*8 Air mi

Page 638 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual ATC-60
TROUBLE DIAGNOSIS
SYSTEM DESCRIPTION
Component Parts
Mode door control system components are:
lAuto amp.
lMode door motor (LCU)
lA/C LAN system (PBR built-in air mix door motor, mode door motor

Page 639 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual TROUBLE DIAGNOSIS
ATC-61
C
D
E
F
G
H
I
K
L
MA
B
AT C
COMPONENT DESCRIPTION
Mode Door Motor
The mode door motor is attached to the heater & cooling unit. It
rotates so that air is discharged from the o

Page 640 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual ATC-62
TROUBLE DIAGNOSIS
INSPECTION FLOW
SYSTEM DESCRIPTION
Component Parts
Air mix door control system components are:
lAuto amp.
lAir mix door motor (LCU)
lA/C LAN system (PBR built-in air mix door