ECU GREAT WALL FLORID 2008 Owner's Manual

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Central door locking, window regulator system
Rise
Off
Descend
Rise
Off
Descend
Rise
Off
Descend
Front door switch RH
Rear door switch LH
Rear door switch RH
Jam protection window regulator control system
Front window regulator mainly switch LH
Front door jam
protection motor LHFront door jam
protection motor RHRear door jam
protection motor LH Rear door jam
protection motor RH
Connected combination meter
Connected combination meter
Connected combination meter
Connected high beam relay
Connected airbag ECU
Central control module
Connected interior dome lamp Connected reading lamp
Open door indicator lamp
Airbag signal
Back door lamp switch
Rear door lamp switch LH
Rear door lamp switch RH
Front door lamp switch RH
Front door lamp switch LH
Trunk opener switch
Trunk motor
Unlock
signal
Lock signalFront door lock LH Lock
UnlockRise
Off
Descend
Rise
Off
Descend
Rise
Off
Descend
Rise
Off
Descend
Rise
Off
Descend
Rise
Off
Descend
Rise
Off
Descend
Rise
Off
Descend
Rise
Off
Descend
Rise
Off
DescendDoor lock is
locked
Stationary
state
Door lock is
on
Front door lock
motor RH
Rear door lock
motor LH
Rear door lock
motor RH
Left turn signal
Right turn signal
Lighting detect
Passenger side central ocntrol switch Central ocntrol switch
Driver side electric switch Window lock switch
Front door electric
switch RH
Rear door electric
switch LH
Rear door electric
switch RH
Window relay
Window lock switch
Front door switch RH
Rear door switch LH
Rear door switch RH Door electric door
mainly control switch
Front door electric
switch RH
Rear door electric
switch LH
Rear door electric
switch RH
Non jam protection window regulator control system
Front door motor LH
Connected central door
lock controller (white)
Connected front
window regulator LH Connected rear window regulator LH
(comfort, luxury) Connected rear window regulator RH (Elite)
Connected rear window
regulator RH (comfort, luxury)Front window regulator LH
Rear door lock motor LHRear door lock motor RHBack door lamp ONBack door open switch Back door lock motor
Front window regulator RH
Connected front
window regulator RH
Connected rear
window regulator LHConnected rear
window regulator RH Connected rear
window regulator LH Rear window regulator RH
Front door lamp
switch LHFront door lamp
switch RHRear door lamp
switch LHRear door lamp
switch RH Front door lock motor LH
Front door lock motor RHThe key is inserted into the
detected switch
Window regulator mainly switch, central door lock mainly
control switch (comfort, luxury) Window regulator mainly switch, central door lock
mainly control switch (Elite)Connected front passenger side
central door lock switchFront window regulator switch RH (Elite)
Connected front window regulator switch
RH (comfort, luxury) Connected front window regulator switch
RH (comfort, luxury)Connected rear window regulator switch
LH (Elite)
Front door motor RH
Rear door motor LHRear door motor RH
Front window regulator mainly control switch LH
Terminal
Location
Terminal
Location

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Electric horn
Horn switch
High pitched Electric horn
Low pitched Electric horn
Front fog lamp LH
Front fog lamp RH
Left outer electric rearview mirror (left turn signal lamp) Right outer electric rearview mirror
(right turn signal lamp) Left combination switch (light)
Horn switch High pitched horn Low pitched horn Connected left
license plate lamp Connected light brightness
regulator switch Connected headlight vertical
adjustment switch
Front fog lamp LH
Front combination lamp RH Front combination lamp LH Rear combination lamp LH Rear combination lamp RH Rear defroster & alarm switch Connected rear fog lamp RH Connected rear fog lamp LH Connected left headlight
vertical adjustment motor Connected right headlight
vertical adjustment motor Connected right license
plate lamp
Front fog lamp RH
Rear fog lamp LH
Rear fog lamp RH
Rear fog indicator lamp
Left headlight adjustment motor
Right headlight adjustment motor High beam relay
Lamp
ON Low
beam
Low
beam High
beam
High
beam Over-
taking
Over-
taking
Lamp
Off
Low beam relay
Parking lamp relay
Flasher relay
Connected combination
meter A18
Connected central
control ECU #8
Connected central
control ECU #1
Connected central
control ECU #2
Connected central
control ECU #14
Front parking
lamp LH Front turn signal
lamp LH
Rear turn signal
lamp LH
Left turn
signal lamp
Left turn
signal lamp
Front turn
signal lamp RH
Rear turn signal
lamp RH
Right turn
signal lamp
Right turn
signal lamp
Front parking
lamp RH
Rear parking
lamp LH
Rear parking
lamp RH
Left license
plate lamp
Right license
plate lamp
Light main switch indicator
Turn signal lamp switch
Alarm switch Light brightness regulator switch
Ignition key cylinder light Glove box lamp
Reading lamp (Elite) Reading lamp
Rear interior dome lamp
Connected central control ECU #9
High beam indicator Left headlight
Right headlight Headlight vertical switch
red and
white
red and
white
Fog lamp switch
Pin
position Pin
position
Left turn
Right turn Off
Front fog
lamp
Rear fog
lamp Off
Horn relay
Front fog lamp relay
Rear fog lamp relay
Lighting system Steering & alarm lamp control system
Interior lighting system
Terminal
Location
Off On
Light, signal alarm system

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Auxiliary system
To diagnostic port
To ECU 29#
To ECU 71#
Theft deterrent indicatorReverse lamp switch
Left reverse lamp
Right reverse lamp Detector No. 1
Detector No. 2
Detector No. 3
Detector No. 4
Theft deterrent coil
Connected theft deterrent ECU Connected diagnostic port Detector No. 1
Detector No. 2Detector No. 3 Detector No. 4
Connected theft deterrent indicator
Connected reverse sensor controller Connected reverse sensor buzzerBuzzer
Ignition switch IG1
Theft deterrent controller
Reverse sensor controller

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Reverse Sensor
Reverse sensor operation (ultrasonic wave distance-measurement)
Sound is a kind of wave. Sound frequency that can be heard by human beings range from 20 Hz to 20 KHz.
Those that exceed 20 KHz are called ultrasonic waves. Since an ultrasonic wave is also a kind of sound, its
velocity in the air also equals the sound velocity of 340 m/s. Part of the ultrasonic wave will rebound when it
encounters an obstacle. So the distance between the sound source and the obstacle can be calculated according
to the sonic speed and the time difference between the emission of sound and the receipt of sound.
Reverse sensor system composition
This system is composed of a reverse sensor head unit (ECU), four sensors (SENSOR) and an external buzzer.
Plug
numberDefinitionRemark
1GNDGround wire of the head unit's power supply
2BUZZER -Buzzer ground wire
3DATAReserve display data wire
4GNDReserve buzzer ground wire
5L (SENSOR)Inductor signal wire (four inductors)
6CL (SENSOR)
7CR (SENSOR)
8R (SENSOR)
9GNDInductor ground wire (four inductors)
10GND
11GND
12GND
13GND
14VCCReserve display power wire
15BUZZER +Buzzer power wire
16+ 12 VHead unit power wire
Reverse power supply:
Inductor L Inductor CL
Inductor CR Inductor R Controller
Red (+)
Black (-)

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Front door window regulator LHFront door window regulator RH
Rear door window regulator LHRear door window regulator RH
Regulator components
Maintenance areas of importance
1. Initialization
Considering the system's stable and reliable operation is directly related to the state of the vehicle's door sheet
and weatherstrip, the initialization process is required at the assembly line for the overall vehicle. Continuously press
the rise button of the power window actuator to roll up the window. The window will stop rising after only rolling up
45 mm. Then, after releasing the glass switch, continuously press the rise button again. It will still only roll up 45 mm.
Basic initialization will be completed when the rise has been blocked. At this point, the system will possess all the
functions except the lowering soft-stop function. During the basic initialization rise process, there is no jam protection
function. The basic initialization is completed, and it will still have the automa\
tic lowering function.
2. Re-initialization & operating instructions are as follows
(a) This function is executable only when the following items are carried out.
• Manually correct the zero position function.
• The window rests at the mechanism dead center zero position.
(b) Within two seconds of the zero position (after the motor is blocked), release the button, then press the
button again for at least 20 s.
(c) After 20 s, the window will automatically lower about 46 mm, indicating that the characteristic curve and
zero position have been deleted.
(d) After it is deleted, the power window will only have manual function.
(e) Start initialization again.
cut off. Before sending out any new input instructions, the software will first detect whether the adhesive
contact point of the relay has been released. If it has been released, then all the operations, including the
sleep pattern, will once again be executable. If the contact point is still adhered, then only operations
going in one direction have the possibility of execution (depending on which direction the relay contact is
adhered). Then soon afterwards, activate the contact point adhesion handling funct\
ion again.
(c) Motor protection when the Hall element failed or magnetic ring damaged.
If the Hall element or magnetic ring has malfunctioned, the control module can not receive the Hall
element's signal. In this case, the control module will return to the state before basic initialization, which
means it can only rise about 45 mm at most, and it will not have the jam protection function. During
the process of a centralized control rise, re-initialization is prohibited. Once any switch is activated, the
window will stop moving.

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Immobilizer System
Immobilizer system composition
This vehicle's engine immobilizer system consists of a theft deterrent ECU assembly, a theft deterrent coil as-
sembly, and two theft deterrent converter assemblies. The theft deterrent coil assembly is put on the head of
ignition lock cylinder, with the other end connected to the theft deterrent ECU assembly. The two theft deterrent
converter assemblies are separately installed inside the plastic handles\
of the two keys.
1. Position diagram
All the components of immobilizer system are assembled on the overall vehicle except for the theft deterrent
converter assemblies inside the keys. They achieve communication functions via the wire harness connections.
The following figure shows the position of each component in the overall\
vehicle.
Theft deterrent controller
Ignition lock key
Theft deterrent coil
Steering column
2. Theft deterrent controller
The theft deterrent controller assembly mainly consists of a microprocessor and peripheral components. It com-
municates with the password transmitter assembly and engine ECU. The theft deterrent controller assembly
communicates with the engine ECU via the W wire, while communicating with the theft deterrent transponder
assembly via radio frequency. The theft deterrent controller connects with the scanner via the K wire. Through
the scanner, it can initiate matching, state controlling, and malfunction diagnosti\
c on the immobilizer system.
3. Theft deterrent coil
The theft deterrent coil assembly is installed on the ignition lock cylinder, the other end of wire harness
plug is connected to the theft deterrent controller assembly. The theft deterrent coil assembly can generate
an electromagnetic field to achieve communication between the theft deterrent controller assembly and the
password transmitter assembly.
4. Transponder
The theft deterrent transponder is installed inside the key handle. It has no power supply, maintains a small size,
and long use life. It acquires electric energy and transmission signals using the stimulation of the electromagnetic
field generated by the theft deterrent coil, so as to communicate with t\
he theft deterrent controller assembly.

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Diagnostic
scanner
Engine ECU
Battery
+-
Ignition switch
LED
620 Ω
LED
ON
ANTA
GND
ANTB
Battery
Ground
W wire
R wire
K wire
A4
A3
A1
A2
A8
A5
A7B3
B2
B1
Coil
6. Theft deterrent controller's connecting plug
The theft deterrent controller has two connecting plugs: an 8-core A plug and a 3-core B plug.
PinPin definition
B1Coil terminal A
B2Coil terminal B
B3GND
Theft deterrent controller
8-core A plug
Coil 3-core B plug pin definition
7. Immobilizer system matching
System matching is defined as a composition of independent immobilizer system components: The theft deter-
rent controller assembly, theft deterrent transponder, theft deterrent coil assembly, and engine ECU are com-
bined into a immobilizer control system through relevant downline matching equipment or scanners.The engine
can only start up when the well matched immobilizer system works normall\
y.
Engine immobilizer system fault diagnostic and troubleshooting
Immobilizer system failure will lead to the engine ECU being blocked and the engine unable to start up. It does
PinPin definitionRated working
voltage
Working
current
A1Connected battery positive pole12 V<200 mA
A2Ground0 V<200 mA
A3Connected LED12 V<50 mA
A4Connected ON end12 V<50 mA
A5Connected R wire12 V<200 mA
A6No connection
A7Connected K wire12 V<200 mA
A8Connected W wire12 V<200 mA
Note: Do not connect the A3 pin if the vehicle does not
have a theft deterrent indicator lamp
5. Immobilizer system wire connection diagram

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not necessarily mean that engine start failure is due to a immobilizer system malfunction. The reasons for start-
ing engine failures are numerous, including factors like fuel, gas, fire, electricity, wires, etc. If the engine cannot
start, first check if the immobilizer system is working normally. This can be judged by looking at the flashing
theft deterrent indicator lamp which is located on the dashboard in front of the driver seat: Insert the key into the
lock cylinder and turn it to the "ON" position. If a legal key is used to start the engine, once the warning lamp is
connected to the ON end and the transponder is confirmed, the LED will remain unlit. Then when the ON end is
disconnected and the key is pulled out, the LED will shine for 0.25 s and darken for 4 s, as to act as a warning.
If an illegal key is used to start up the engine or there is something wrong with the system, the alarm indicator
lamp will shine for 0.25 s and darken for 4 s. If all is normal, then check the other parts of the engine. If abnor-
mal, first perform immobilizer system troubleshooting. A scanner can be used to judge if the immobilizer system
is working normally, but the precondition is that the scanner must be able to establish communication with the
theft deterrent controller.
1. If communication cannot be established, consider the following:
(a) Check whether the battery voltage is higher than 9 V
(b) Check whether the scanner plug is well contacted to the vehicle socket
(c) Use a multimeter to check whether the 7 pin of the OBD-II plug (diagnostic plug) is connected to the theft
deterrent controller's A7 pin
(d) Check whether the power supply of the theft deterrent controller is normal. (Use a multimeter to measure
whether the voltage of the theft deterrent controller's socket A1 pin and A2 pin is higher than 9 V)
(e) Then adopt the substitution method, which is to replace the theft deterrent controller to check if there is
anything wrong with the theft deterrent controller.
• If the failure is related to the theft deterrent controller, change it and initiate re-matching.
• If the failure has nothing to do with the theft deterrent controller, remove the electronic controller which
is connected to the alarm's K wire, such as the ABS controller, engine electrojet controller, airbag ECU
assembly, etc., as to ascertain if the present fault is caused by the wire harness connected with the theft
deterrent controller's K wire.
2. If communication can be established
Connect the scanner to the vehicle diagnostic port. Insert the key into the steering lock, and turn it to the "ON"
position, then select the scanner to check the immobilizer system's trou\
ble code.
3. Security system troubleshooting
Investigate the problem and perform troubleshooting according to the tro\
uble code on the scanner:
Trouble
code
Code
significanceFailure causeTroubleshooting methods
B1000Theft deterrent
controller
internal
malfunction
Theft deterrent coil open
circuit or short circuit. Theft
deterrent controller internal
malfunction.
Check whether the theft deterrent coil's connecting plug and 1.
the theft deterrent controller is well connected.
Check whether the theft deterrent coil's wire harness plug is sliding 2.
or touching each other.
R e m o v e t h e t h e f t d e t e r r e n t c o i l p l u g , a n d t h e n u s e a 3.
multimeter to check the resistance between the B1 and B2
pins. The normal resistance is about 5-30 Ω. If the resistance
is close to zero, that means the coil has been short circuited.
If the resistance is infinite, then it means the coil's circuit is
open. Measure the resistance between pins B1 and B3, and
B2 and B3, normally they are infinite. If the resistance gains
a certain value, then it means the coil is short circuited or
leaking electricity.
If there is nothing wrong with the coil, the next step is to 4.
check the theft deterrent controller. Adopt the substitution
approach, replace it with a non-matched new theft deterrent
controller or an theft deterrent controller which has been
reset (please refer to the immobilizer system component
replacement). Insert the key into the ignition lock and turn it
to the "ON" position and read the trouble code. If there is no
9000 failure, it means the replaced controller has an internal
malfunction, and the new replaced controller must be re-
matched.

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4. Security system component replacement
When a failure appears in one of the immobilizer system components, this component must be replaced. After
the replacement, perform matching on the immobilizer system again.
Only changing the coil
There is no need to match the immobilizer system again.
Only changing the key (theft deterrent transponder assembly)
(a) Get the vehicle's PIN code from the code located inside the burglar-proof classified envelope
(b) Connect the scanner with the vehicle's diagnostic connection
(c) Insert the key into the ignition lock and turn it to the "ON" position
(d) Check whether the key is legal and matched. If it is illegal or already been matched, then it cannot be
matched again, but will have to be replaced
(e) Input the PIN code with the scanner
(f) Erase the damaged lost key's information
(g) Match the new key according to the scanner's prompt
(h) If it is necessary to match another key, insert the key, and after resetting the scanner, operate according to
steps c, d, e, and g.
Caution: Make sure the key is legal and hasn't been matched before learning the key. Otherwise, the
immobilizer system won’t successfully match or the scanner will display that it has been matched but
the electrojet's validation is not available.
Only replacing the theft deterrent controller assembly
(a) Get the vehicle's PIN code from the code inside the burglar-proof classified envelope
(b) Turn off the ignition switch, and replace with an unmatched new theft deterrent controller or reset the theft
deterrent controller
(c) Insert the key into the ignition lock and turn it to the ON position
(d) Input the PIN code with the scanner
(e) Match the theft deterrent controller assembly according to the scanner prompts
(f) Because the theft deterrent controller is new, there is no VIN and original key information stored in it. It
will need the VIN inputted and must be matched with the original key, otherwise the original key will not
work.
Caution:
(a) Replace the new alarm remote controller or reset the alarm remote controller, or the alarm re-
mote controller system matching can not be completed.
(b) Select "Read EMS to alarm remote controller", not "Read alarm remote controller to EMS", or it
will make the transponder inoperable.
Only replacing the engine ECU
(a) Get the vehicle's PIN code from the code inside the burglar-proof classified envelope
(b) Turn off the ignition switch, and replace with a new non-matched or reset ECU
(c) Insert the key into the ignition lock and turn it to the ON position
(d) Input the PIN code with the scanner
(e) Match the ECU according to the prompts on the scanner, and complete the ECU and theft deterrent
controller matching.
Caution:
(a) Make sure to replace it with a new or reset ECU, otherwise the immobilizer system matching can-
not be completed.
(b) Select the menu of "Read EMS to theft deterrent controller", but not "Read theft deterrent control-
ler to EMS", or it will make the transponder inoperable.
Replacing the theft deterrent controller and EMS controller at the same\
time
If both the theft deterrent controller and EMS controller need to be changed at the same time, then the transpon-
der that has been matched must also be replaced, otherwise the immobilizer system matching cannot be com-
pleted. The immobilizer system needs to be re-matched after being replace.
Matching after sales stage
Problems caused by lost keys or immobilizer system failures requires a duplicate key, replaced parts, etc. These
problems cannot be solved without re-matching the immobilizer system's parts. During the matching, input the
correct PIN code with scanner. Specific possible problems and matching methods the maintenance station may
encounter are as follows:
1. Match an empty key:
(a) Properly connect the engine ECU and the theft deterrent controller, and then insert the key to be matched,
and switch the ignition switch to the ON position

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(b) Input the PIN code and the key matching instructions with the scanner
(c) If the PIN code is correct, after receiving the key matching instructions, transponder learning will be
complete
(d) Switch off the ignition switch
2. Check the key quantity:
Check the alarm's currently matched key quantity and matchable key quantity with the scanner .
3. Match the theft deterrent controller:
(a) Properly connect the engine ECU and the theft deterrent controller
(b) Input the PIN code and theft deterrent controller matching instructions with the scanner
(c) If the PIN code is correct, after receiving the theft deterrent controller matching instructions, matching will
be complete.
After theft deterrent controller matching is done, it needs to re-learn each key if the original key is still to be
used. If the original key will not be in use any more, then it needs to \
rematch the new key.
4. Match the engine ECU
(a) Properly connect the engine ECU and the theft deterrent controller.
(b) Input the PIN code and engine ECU matching instruction with the scanner.
(c) If the PIN code and instructions are correct, the matching process will be completed automatically.
5. PIN code scan-resisting strategy
From the matching process above, it's apparently that the PIN code is a security code for the matching process.
This code is passed to the vehicle owner in document format during the sales service. If it is lost accidentally,
the customer service staff can check the vehicle identification code stored in the theft deterrent controller with a
scanner, and then send it to the authorized staff in the factory to check the PIN code. In order to prevent someone
from illegally scanning the PIN code, it uses a forced time-delay method to prevent divulgence of information.