Chery A21 2005, Service Manual, Page: 277 / 475

As shown in figure 14-4, the 30th power line supply power to the E pin of front ISU via fuse
Fb29 and then fuse FB25, and output from the C20 pin of front ISU to suppply power to F/R turn
lamp and right side turn lamp; the voltage output from the the C9 pin of front ISU supply power to
F/L turn lamp and left side turn lamp; it also supply power to the 4th pin of dangerous warning lamp.
If one turn lamp cause trouble , then the other turn lamp of the same side will speed up the
flashing frequency, and it will be twice of that in normal condition. But the side turn signal lamp will
not be influenced.
There are two modes of vehicle lamp warning system: activate or unchain mode.
When the vehicle lamps connected, open the driver's door (system activate), the buzzer will
warning. If you close the driver's door or turn off the vehicle lamp switch when the buzzer is
warning , it will stop.
（ 1 ） Turn lamp and dangerous warning lamp circuit
（ 2 ） Anti-theft activate lamp warning
3 ． Turn lamp and hazard warning light circuit
Fron t G round/ Fr ont
En gine Compart ment
/16
To Haz ard
Warning
lig ht Swit ch 6#
I nstr ume nt/Front
Ground/ 11
C20 C9
G /L Br
Front ISU
From ILLUM
1
6
4
5
2
From Front Left Turn
A3
Y
Y
Br
W
3 1
30
15
ACC1
ACC2
31
ILLUM
⑩
Hazard Switch
Le f t Side Turn Li ght
Front Ground/Front Engine
Compartment/13
FB30
80A
E
（ 2 ） 31
F1
25A
C7 C8
P P
Right Side Turn Light
The voltage of 30 th line → fu se FB22 → high beam r elay coil → the A19 pi n of front I SU,
when the high beam relay coil get el ectricity, the contact point will close.
The vol tage of 30th line → line after the h igh beam relay contact point get into two li nes:
one line via the FB25 → F/L high beam, the other line via the FB26 → F/R high beam, the high
bea m light on then.
The voltage of 30t h line → fuse Fb22 → lo w beam re lay coil → t he A17 pin of front I SU,
when the low beam relay coil get ele ctricity, the contact p oint will cl ose.
The volt age of 30th line → line after the lo w beam re lay contact point get i nto three li nes:
one line via the FB27 → F/L low beam and F/ L lamp ad justing mo tor , the 2 nd line supply
pow er to head lamp adjusting switch; the 3rd line via the FB14 → F/R low beam and F/R lamp
adjusting moto r , the low beam light on then.
When the switch is set at the high beam positio n, the 10t h and 13t h pin of lamp
com bination s witch are connectted, the 12nd 、
8th and 11 st pin are connectted, the B1 pi n of
front ISU → th e 10th pin of lamp combinatio n switch → the 13rd pin of lamp combina tion
switch → ground, the B12 pin of front ISU → the 12nd pi n of lamp combination switch → the
11st pin of lam p combination switch → ground.
When t he switch is set at the low beam position, the 12n d and 11th pin of lamp
com bination s witch are c onnectted, the 12nd 、 11st and 9 th pin are connectted .
When t he switch is set at t he overtake position, the 10th and 13rd pin of lamp
com bination s witch are c onnectted.
When t he switch is set at the dimme r position , the 10th and 13th pin of lamp
com bination switch are c onnectted; and when the switch is set at th e headlam p position, the
10th and 13rd pin of lamp combinat ion switch are connectted, and the 12nd
、 1 1st and 8th pin
are connectted .
When the switch is set at the L position, the 6th and 5th pin of lamp comb ination sw itch
are connectted; and when the swit ch is set at the R position, the 6th and 7 th pin of lamp
com bination s witch are c onnectted. The circui t is shown as figure 14 -5.
（ 1 ） High Beam Circuit
（ 2 ） Lo w Beam C ircuit
（ 3 ） La mp Comb ination Sw itch
High Beam Control Circuit
：
High Beam Main C ircuit ：
Low Be am Contro l Circuit ：
Low Bea m Main Ci rcuit
：
Lamp C hanging Switch
：
Lamp Main Switch ：
Steering Switch
：
Figure14-4 Turn lamp circuit
4 ． Headlamp circuit
29