2003 NISSAN X-TRAIL Service Repair Manual

Page 3465 of 4179

NISSAN X-TRAIL 2003  Service Repair Manual TROUBLE DIAGNOSIS
ATC-69
C
D
E
F
G
H
I
K
L
MA
B
AT C
 
2. CHECK GROUND CIRCUIT FOR AUTO AMP.
1. Turn ignition switch OFF.
2. Check continuity between auto amp. harness connector M52
terminal 3 (B) and

Page 3466 of 4179

NISSAN X-TRAIL 2003  Service Repair Manual ATC-70
TROUBLE DIAGNOSIS
 
2. CHECK SIGNAL FOR AUTO AMP.
Confirm A/C LAN signal between auto amp. harness connector M52
terminal 15 (G) and ground using an oscilloscope.
OK or NG
OK >> GO TO 3.
NG >>

Page 3467 of 4179

NISSAN X-TRAIL 2003  Service Repair Manual TROUBLE DIAGNOSIS
ATC-71
C
D
E
F
G
H
I
K
L
MA
B
AT C
 
5. CHECK MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect each door motor connector.
3. Check continuity between mode door motor h

Page 3468 of 4179

NISSAN X-TRAIL 2003  Service Repair Manual ATC-72
TROUBLE DIAGNOSIS
 
9. CHECK MODE DOOR MOTOR AND AIR MIX DOOR MOTOR OPERATION
1. Turn ignition switch OFF.
2. Disconnect intake door motor connector.
3. Reconnect air mix door motor connector.

Page 3469 of 4179

NISSAN X-TRAIL 2003  Service Repair Manual TROUBLE DIAGNOSIS
ATC-73
C
D
E
F
G
H
I
K
L
MA
B
AT C
 
Mode Door Motor CircuitEJS004GX
SYMPTOM:
Air outlet does not change.
Mode door motor does not operate normally.
INSPECTION FLOW
*1ATC-32, "Disc

Page 3470 of 4179

NISSAN X-TRAIL 2003  Service Repair Manual ATC-74
TROUBLE DIAGNOSIS
 
SYSTEM DESCRIPTION
Component Parts
Mode door control system components are:
Auto amp.
Mode door motor (LCU)
A/C LAN system (PBR built-in air mix door motor, mode door mot

Page 3471 of 4179

NISSAN X-TRAIL 2003  Service Repair Manual TROUBLE DIAGNOSIS
ATC-75
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

Page 3472 of 4179

NISSAN X-TRAIL 2003  Service Repair Manual ATC-76
TROUBLE DIAGNOSIS
 
Air Mix Door Motor CircuitEJS004GY
SYMPTOM:
Discharge air temperature does not change.
Air mix door motor does not operate.
INSPECTION FLOW
*1AT C - 6 5 ,  "Operational Ch