Chery A21 2005, Service Manual, Page: 290 / 475

Seat Heater System
（ 1 ） Front left seat he ater
（ 2 ） Front rig ht seat h eater
◆ Control circ uit
◆ Main circuit
◆ Control circ uit
◆ Main circuit
When press the front left seat heating switch, the voltage of ACC2 wire →
15 A Fb6 fu se → 2nd p in of front left seat heating switch → contact point of f ront left
seat heating switch → 4th pin of front left seat h eating switch → 1s t pin of f ront left
seat heating set → 3rd pin of fr ont left seat heatin g set → gr ound.
The p ositive p ole of ba ttery → FB32 fuse in positiv e pole fu se box → 2nd pin
of the front left seat heating set → go through the heating wire and relay contact
point in th e front le ft seat he ating set → 3rd pin of the front left seat heating set →
ground. Th e front le ft seat he ater heat ing then.
The v oltage of ACC2 w ire → 15A Fb6 fuse → 2nd pin of front left seat heating
sw itch → contact poi nt of front left seat heating switch → 3rd pin of front left seat
heating switch → ground. The left heat indicator lamp light on.
When press the front ri ght seat heating sw itch, the voltage of ACC2 wire →
15 A Fb6 fu se → 2nd pin of fro nt right seat heat ing switc h → contact point of front
right seat h eating sw itch → 4th pin of front right seat h eating sw itch → 1st pin of
fro nt right seat heati ng set → 3rd pin of front rig ht seat he ating set → ground .
The p ositive p ole of ba ttery → FB32 fuse in positiv e pole fu se box → 2nd pin
of the front right seat heating set → go through the heating wire and relay contact
point in th e front r ight seat heating set → 3rd pin of the front r ight seat heating
set → ground. The front right seat heater heating then.
The v oltage of ACC2 wire → 1 5A Fb6 fuse → 2n d pin of front right seat
heating swi tch → con tact point of front right seat heating switch → 3rd pin of front
right seat heating sw itch → gro und. The right he at indicator lamp light on.
Seat Heater System Circuit Analysis ：
30
15
ACC1
ACC2
31
I LLUM
FB6
15A
1
2
4
3
2 1
4
3
8
31
Gr een Black Red R ed Gre en Black
B lack Blac k/White Black/White Black
Front Left
Seat Heater
Switc h
Fron t Right
Seat Heater
Switch
8 8
To
P ositive Fuse Box
Front Left Seat Heater
Device
F ront Right Seat Heater
De vice
2 1
3
2 1
3
L16
Figure21-1 Circuit Diagram Seat Heater System
The installati on position of seat
heating switc h
F/L seat heating switc h
F/R seat heating switch
Rear seat heating s witch
4 2