2003 NISSAN X-TRAIL Electronic Repair Manual

Page 2641 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual TROUBLE DIAGNOSIS
MTC-5
C
D
E
F
G
H
I
K
L
MA
B
MTC
Discharge Air FlowEJS001HF
RJIA0483E

Page 2642 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual MTC-6
TROUBLE DIAGNOSIS
Wiring Diagram-HEATER
EJS001FD
TJWA0009E

Page 2643 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual TROUBLE DIAGNOSIS
MTC-7
C
D
E
F
G
H
I
K
L
MA
B
MTC
Operational CheckEJS001FE
The purpose of the operational check is to confirm that the system operates properly.
CHECKING BLOWER
1. Turn fan switch to

Page 2644 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual MTC-8
TROUBLE DIAGNOSIS
CHECKING TEMPERATURE DECREASE
1. Turn the temperature dial to full cold position.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for a

Page 2645 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual TROUBLE DIAGNOSIS
MTC-9
C
D
E
F
G
H
I
K
L
MA
B
MTC
Air Mix DoorEJS001FG
SYMPTOM: Air mix door does not change.
*1 Discharge air flowMTC-5*2 Operational checkMTC-7*3 Mode door control cableMTC-27
*4 Sy

Page 2646 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual MTC-10
TROUBLE DIAGNOSIS
Intake Door Motor Circuit
EJS001FH
SYMPTOM:
lIntake door does not change.
lIntake door motor does not operate normally.
*1 Air mix door cableMTC-28*2 Symptom tableMTC-3*3 Oper

Page 2647 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual TROUBLE DIAGNOSIS
MTC-11
C
D
E
F
G
H
I
K
L
MA
B
MTC
INSPECTION FLOW
COMPONENT DESCRIPTION
Intake door motor
The intake door motor is attached to the intake unit. It rotates so that
air is drawn from i

Page 2648 of 3066

NISSAN X-TRAIL 2003  Electronic Repair Manual MTC-12
TROUBLE DIAGNOSIS
1.CHECK POWER SUPPLY FOR HEATER CONTROL PANEL
Disconnect heater control panel harness connector.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 10 A fuse (No. 15