Chery A21 2005, Service Manual, Page: 289 / 475

The driver seat of A5 is elec tric adjustable seat. It has four adjusting motor and adjust
control switc h. The adjusting motor is perma nent magnet motor. It realizes the the circ umvolve
from frontisp iece to inv erse with the differen t electrified directio n of each motor . So, the four
adjusting motors enable the seat to move towards 8 directions suc h as front
、 rear 、 up 、
down 、 grad ient and so on. The 8 directions adjustable seat circu it is shown as figure 20-1.
The positive voltage of battery → positive fuse box 120A fuse Fb28 → 30th line → 3 0A fuse
Fb21 → the 1 st pin of electric seat adjusting switch.
When p ress the UP button of the front seat's part, battery vo ltage that reaches th e 1st pin
of adjusting switch via the UP co ntact poin t of seat's adjusting switch → the 5th pin of seat's
adjusting switch → the front seat's up and down motor → the 6th p in of seat adjusting switch →
th e UP contact point of seat adjusting switch → the 2nd pin of seat adju sting switch → the
ground point near the hand brake → Negativ e of batte ry, then th e front part of seat w ill move
upwards.
When p ress the DOWN button of the front seat's part, battery voltage that reaches the 1st
pin of adjusting switch via the DOWN conta ct point of seat's adjusting switch → the 6th pin of
seat's adjusting switch → the front seat up and down motor → th e 5th pin of seat's a djusting
switch → the DOWN co ntact poin t of seat's adjusting switch → th e 2nd pin of seat's a djusting
switch → the ground point near the hand brake → Negative of battery, then the front part of seat
will move do wnwards.
When p ress the F RONT button of the seat , battery voltag e that rea ches the 1 st pin of
adjusting switch via the FRONT contact point of seat's adjusting switch → the 3rd pin of seat's
adjusting switch → the forwards a nd backwa rds sliding motor → the 4th pin of seat's a djusting
switch → the FRONT co ntact point of seat's adjusting switch → the 2nd pin of seat's a djusting
switch → the ground point near the hand brake → Negative of battery, then the front pa rt of seat
will move forwards.
When p ress the REAR button of the seat , battery voltag e that reac hes the 1st pin of
adjusting switch via th e REAR contact poin t of seat's adjusting switch → the 3rd pin of seat's
adjusting switch → the forwards a nd backwa rds sliding motor → the 4th pin of seat's a djusting
switch → the REAR contact point of seat's adjusting switch → th e 2nd pin of seat's a djusting
switch → the ground point near the hand brake → Negative of battery, then the front part of seat
will move ba ckwards.
（ 1 ） Upwards and downwards of seat front part
（ 2 ） Forwards and backwards of seat
Electric Seat System Circuit Analysis ：
（ 3 ） Upwards and downwards of seat rear part
（ 4 ） The forwards and backwards adjustment of backrest
When press the UP button of the seat's rear part, battery voltage that reaches the
1st p in of adjusting switch via the U P contact point of seat's adjusting switc h → the 7th
pin o f seat's adjusting sw itch → the front seat up and down motor → the 8th pin of seat's
adjusting switch → the UP contact point of seat's adjustin g switch → the 2nd p in of seat's
adjusting switch → the ground point near the h and brake → Negativ e of battery, then the
rear part of seat will move upwards.
When pre ss the DOWN button of the sea t's rear pa rt, battery voltage th at reaches
the 1 st pin of a djusting switch via the DOWN contact po int of seat's adjustin g switch →
the 8 th pin of seat's adjusting switch → the front seat up and down motor → the 7th pin of
seat's adjusting switch → the DOWN contact point of seat's adjusting switch → the 2nd pin
of se at's adjusting switch → the grou nd point n ear the ha nd brake → Negative of battery,
then the rear pa rt of seat w ill move d ownwards.
When press the FRO NT incline button of the seat backrest , battery v oltage that
reaches the 1st pin of adjusting switch via the FRONT c ontact point of seat's adjusting
switc h
→ the 9th pin of seat's adjusting switc h → the backrest forw ards and backwards
adjusting motor → the 10th pin of seat's adjusting switch → the FRONT incline contact
point of seat's a djusting switch → the 2nd pin of seat's adjusting switch → the ground point
near the hand b rake → Neg ative of ba ttery, then the front p art of seat will inclin e forwards.
When pre ss the REAR incline button o f the seat backrest , battery v oltage that
reaches the 1st pin of adjusting switch via the REAR c ontact point of seat's adjusting
switc h
→ the 10 th pin of seat's adjusting switc h → the ba ckrest forwards and backwards
adjusting moto r → the 9th pin of sea t's adjusting switch → the backwards incline contact
point of seat's a djusting switch → the 2nd pin of seat's adjusting switch → the ground point
near the hand brake → Negative of battery, then the front part of seat will incline
backwards.
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