Chery S11 / Chery QQ. Manual — part 59

Chery QQ Service Manual BCM Computer Control System

integration of the antitheft device, power windows and central door lock module. The

system is installed on the left side of the evaporator that is at the lower center of the

central console. When the switch on the remote control device is pressed down, the

central door lock system will enter a security mode with glass window automatically

closed to avoid raining, wind or theft in case the user forgets to lock the windows. This

function will greatly benefit users.

Ⅲ.Function theory of antitheft control system

1. Power

window

①

The main power of the control device is under control of the ignition switch. When

the ignition switch is closed for 60 seconds, it will forbid the glass to rise or drop.

②

The elevator control module controls four glass controllers that can sense whether the

elevating device clamps any person or material. These devices are under protection

by residual current breakers and the leakage limit will change according to the

external voltage changes. Four window controllers have function of consecutive

output of 8-second protection.

③

The safety switch can control whether the right front, left rear and right rear door

switches can operate the corresponding glass elevator.

④

Operation mode: manual elevation, decline, and automatic decline.

Manual decline: pressing time ≥ 300ms

Automatic decline: pressing time ≤ 300ms.

Note: When the glass descends automatically, if the decline switch of the glass controller

is pressed for over 300ms, the glass movement will be turned into the mode of manual

decline; if the elevation switch of the controller is pressed for over 300ms, the glass

movement will be turned into the mode of manual elevation. If the pressing time is no

less than 300ms, the glass movement will stop.

2. Central door lock

①

The left front door independently controls the locking and unlocking of central lock;

②

It can lock and unlock remotely;

③

The central door lock cannot operate simultaneously together with the glass elevator.

- 80 -

Chery QQ Service Manual BCM Computer Control System

The central door lock prevails when these two operations are in conflicts and the glass

elevator stops. When the central door lock completes the glass elevator resumes the

previous task.

3. Remote antitheft function

①

The remote controller has two keys; one is

for setting security mode and the other is to

remove the mode.

②

Security mode: Press the first key on the remote control, then the indicator flashes

once, and the central door lock automatically locks. At the same time the engine is

locked and the LED will flash slowly to indicate the system is on security mode.

When the system is triggered, the turn signal lamp flashes.

③

Removing security mode: Press the second key on the remote control, and then the

indicator flashes twice; simultaneously the lock will automatically unlock and

remove the locking mode of the engine and the LED indicator turns off.

④

Two-stage removing security mode: when the system is triggered, pressing any key

on the remote control will stop the alarm sound. However, the system is still on the

alarm status and the doors locked. If the system continuously receives invading

signals, the alarm will sound again after a short pause. The second key should be

pressed once immediately after the alarm is removed for the first time so as to

remove the alarm completely.

⑤

Secondary antitheft function: when the security mode is removed, the door is not

opened and the ignition switch is not turned on within 30 seconds, the antitheft

device will automatically resume the alarm mode and lock the door.

⑥

Automatic locking/unlocking function: the door will automatically lock five seconds

later when the ignition switch is turned on and automatically unlock the door when

the ignition switch is turned off. If the door is opened once five seconds after the

ignition switch is turned on, the system will not automatically lock to prevent the

driver being locked outside of the car.

⑦

The mainframe is apt to keep the memory of passwords.

⑧

Remote closing the window: when set the security mode remotely, the glass elevator

- 81 -

Chery QQ Service Manual BCM Computer Control System

will automatically work to close the glass windows one by one if the glass window is

not closed.

4. Code setting mode

①

Turn on the ignition switch IGN ON/OFF for two times within 7 second and push

IGN at ON position.

②

LED flashes quickly for 3 seconds;

③

LED will pause 1 second after the above response;

④

When the flash time of LED equals to PIN CODE (PIN CODE =1), set the switch at

IGN OFF;

⑤

When the ignition switch is set at IGN ON, press the first key to set the system;

⑥

Set the switch at IGN OFF;

⑦

When IGN is at OFF position for 10 seconds, it means the system has quit the code

setting mode or you can immediately turn the IGN at ON position to enter

software-switching application.

5. Engine

control

When the ignition switch is set at ST position, the power is supplied through the fuse to

BCM No. 2 Foot. The starting relay is embedded in the BCM computer. When the

antitheft function fails, the starting relay controls operation of the engine.

IV. Inspection and Repair of Antitheft Controller System

1. Check remote control

1) When you press down Unlock or Lock keys, central door lock fails to work. Firstly,

remote control should be checked whether LED indicator light flashes or not when you

press the button. If it flashes, something is wrong with antitheft computer, which will be

then maintained or replaced. Otherwise, something is wrong with remote control. Then

the battery should be checked. If there is power in the battery, remote control fails and

shall be replaced. If out of power, the battery should be replaced.

2) Replace the battery in remote control. Unclench remote control first, and then

change battery as shown in the figure below.

- 82 -

Chery QQ Service Manual BCM Computer Control System

Note: Only the battery with regulated voltage

(+3V) is available. Put in a proper manner

according to positive and negative marks.

2. Check BCM computer

Terminal check of BCM computer is tabulated as below.

Terminal

No.

Terminal Notes

A1

Signal for elevation of left front power window

A2

Ignition switch power supply +12V（F14）20A

A3

Field coil of starter’s electromagnetic switch

A4

Switch signal of central door lock (left front)

A5

Battery power signal +12V（F13）30A

A6

Battery power signal +12V（F13）30A

A7

Battery power signal +12V（F13）30A

A8 Grounding

A9 Grounding

A10

Antitheft alarm signal

A11

Control signal for motor lock of central door lock

A12

Control signal for motor unlock of central control door lock

A13

Antitheft indication signal to right turn indicator

A14

Signal for decline of left front power window

A15

Signal for elevation of right front power window

A16

Signal for decline of right front power window

A17

Signal for elevation of right rear power window

A18

Signal for decline of right rear power window

A19

Battery power signal +12V（F13）30A

- 83 -