Chery A21 2005, Service Manual, Page: 288 / 475

The circuit analysis of front door window lifter and four doors lock.
Please refer to figure 19-1.
The power window system circuit is composed of power window main
switch that set at the left door 、 three p ower window switches th at set at the
th ree doors 、 four window motor and front 、 rear ISU computer.
The power w indow button o peration set is th e device to have the F/L 、
F /R 、 R/L 、 R/R window go up and down automatically.
In th e 40s aft er turning off ignition power, the wind ows' mo vement can
b e controlled, and after 40s , there will be no response.
The front ISU receives the up or down signal fr om the p ower window main
switch to drive the power w indow motor wo rk to open or clo se the window.
The 2nd pin of ISU is connect ted to the children safety l ock. Wh en press the
safety switch on the power window main switch, signal is sent to the front
ISU,whic h cut off the rear door power window motor to p revent t he rear seat
window working. This will enable the pas senger, especially childre n to miss-
o pen the window and resu lt in accident.
If us e the manual key （ outer ） or button at the drive si de （ inner ） to lock
o r unlock, the four doors w ill response imme diately.
If pr ess the lo ck/unlock button on the remote controlle r when pull out the
ig nition k ey from the lock core, the four doo rs will b e locked immediately. Th en,
th e anti- theft sys tem will get into the activation or release state. If one doo r is
n ot closed well, then use th e remot e controller to lo ck, all th e four doors will be
lo cked or unlocked right aw ay .
front
the
The vehicle d oor control set is at the d river seat side. W hen the driver op en
o r close th e door, the open and clo se signal from the minisiz e switch in the do or
lo ck will be sent to the B31 and B15 pin of f ront ISU. The ISU computer cont rol
th e door l ock mot or work accordin g to the open or close signal from the D4 and
D5 pin of ISU.
1 ． p ower window
． 2 Central lock
Power Window of Front Door & Power Door Lock
Circuit analyse
：
Electric Seat System
M
M M
M
30
15
ACC1
ACC2
31
ILLUM
FWD
BKD
U
D
1
3
4
5 6
7
8
9
10
U D FWD
BKD
2
Reg ulate switch
C4
Figure20-1 D A C Electric se at 8 irectional djust ircuit
The upwards and
dow nwards adjusting
switch of the seat front
part
Seat back rest
incline adjusting
switch
The forwards and backwards sliding s witch of seat The upwards and downwards adjusting swi tch of the seat rear part
The forw ards and
backward s sliding
dynam otor
Seat backrest
incl ine adjusting
dynamotor
T he upwards a nd
downwa rds adjusting
of the seat front part
d ynamotor
The upwards and downwards
adjusting dy namoto r of the
seat rear par t
FB21
30A
4 0