Page 453 - Workshop Manual - Tunland (2017)

DIAGNOSTICS - AIR CONDITIONING SYSTEM 04-315

FAILURE OF SERVO MOTOR OF MODE AIR DOOR

Circuit diagram
CAN-H CAN-L Backlight High and low AC Request signal
voltage switch signal
A/C controller
C021
04
Mixed air 5V
Mixed air Mixed air motor reference Mode Mode Mode motor Cycle Cycle Cycle motor
motor + motor - feedback voltage motor + motor - feedback motor + motor - feedback Ground GroundGround
A12 B12 A8 A4 A13 B13 A7 A11 B11 B7 B1 B19 B20

B-G B-P G-L P-G B-Y B-W B-R O O-B V-W B B B

B

B-L P-G B-L P-G B-L P-G
5 6 1 2 3 5 6 1 2 3 5 6 1 2 3

M M M
Mixed air motor C031 Mode throttle servo motor C014 Cycle servo motor C023
ftwxd041072
B2

Diagnostic steps

1 . Check fuse
(a) Disconnect battery negative cable.

(b) Check the fuse inside the vehicle-body fuse
box:
• F17（5A）

• F33（5A）
• F44（30A）

Check whether the result is normal?
Yes> go to step 2

No> replace fuse