2008 GREAT WALL FLORID maintenance reset

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Plug-in connector pin's function
Pin numberFunctionPin numberFunction
A01Rear fog lampA11Empty
A02Internal lightingA12Empty
A03EmptyA13Empty
A04Combination switch
(front fog lamp)A14Empty
A05Combination meter A15Empty
A06Front fog lampA16Empty
A07EmptyA17Empty
A08EmptyA18Empty
A09Central lock controllerA19Empty
A10Combination switch
(rear fog lamp)A20Empty
B01Power IG (12v)B10Empty
B02GroundB11Empty
B03Power rearview mir-
ror switch, CDB12Window regulator motor
B04Ignition switch (ACC)B13
Front & rear cigarette
lighter, backup
power supply
B05EmptyB14Empty
B06Compressor controlB15Reverse lamp, air
conditioner controller
B07EmptyB16Empty
B08Front wiper, front and
rear washer motorB17Empty
B09GroundB18Empty
C01Air conditioner con-
troller (blower) C08Rear glass and rearview
mirror defroster
C02Air conditioner
controller (defroster) C09Empty
C03Airbag ECU C10Empty
C04Combination switch
(rear wiper) C11Empty
C05ABS ECUC12Empty
C06Rear wiper power resetC13Combination meter
C07Rear wiper motorC14Rear wiper reset

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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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Trouble
code
Code
significanceFailure causeTroubleshooting methods
B3048The LED has
a short circuit
or open circuit
to the power
supply
The wire harness (A3
pin) connecting to the
immobilizer indicator
(LED) has short circuited to
the battery positive.
Check whether the theft deterrent controller's 8-core plug 1.
wire harness is touching each other.
Check whether the wire harness which connects the 8-core 2.
plug's A3 pin and the immobilizer indicator has short
circuited to the battery positive.
B3055Transponder
cannot
modulate
or without
transponder
No transponder inside the
key, transponder damage,
and the theft deterrent coil
damage will lead to theft
deterrent controller receiver
failure of the response
signal from the transponder.
Check whether there is transponder in the key.1.
Check whether the theft deterrent coil is correct as specified 2.
in Article 1.
Replace the transponder (please refer to immobilizer system 3.
component replacement).
B3056No key
message is
stored in the
theft deterrent
controller
The theft deterrent controller
hasn't been matched or
has no key duplicate, thus
there is no transponder
identification code stored
inside the theft deterrent
controller
Re-learn the keys.
B3057PIN is not
recognized
by the theft
deterrent
controller
The theft deterrent controller
is new or has been reset.
Set up the safety code and match the theft deterrent controller
again.
B3059No request
signal from
the electrojet
controller is
received
The theft deterrent
controller doesn't receive
the communication request
signal from the electrojet
controller.
Check whether the theft deterrent controller's 8-core plug is 1.
well connected.
Check whether the wire harness connecting the A5 pin (R 2.
wire) of the 8-core plug and electrojet is well connected, is
not short circuited, and is not poorly connected.
Replace the alarm (please refer to immobilizer system 3.
component replacement). Check whether the above failures
exists. If they do not, the fault most likely exists in the alarm.
Replace the electrojet (please refer to immobilizer system 4.
component replacement). Check whether the above failures
exists. If not, the fault most likely exists in the electrojet.
B3060Illegal key
message is
received
No transponder
identification code stored in
the theft deterrent controller.
Use the scanner to carry out the "learning keys" function.
B3061The
communication
with the key is
interrupted
The transponder
can not establish
communication with the
theft deterrent controller,
the communication
is interrupted, or the
communicating data is
incorrect. The electrojet
key is not identical to the
transponder's.
Check whether the theft deterrent coil is correct as specified 1.
in Article 1.
Check whether the transponder is new or not matching. 2.
Rematch it if it is not matched;
If the transponder has been matched, make sure to check 3.
whether the transponder has been changed, or the electrojet
changed or reset
• If the transponder has been changed, then it cannot be used
again, and must be replaced with a new one and then re-
matched
• If the transponder hasn't been changed and only the
electrojet has been reset, then it only needs to matched again.
• If the transponder has not been changed but the electrojet
has been changed, make sure the replacing electrojet
is new or has been reset. If the substituted electrojet is
matched but not yet reset, then it must be replaced with a
new or reset one and then 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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detection but also during the diagnostic detection cycle. However, if a short circuit on the power supply causes
a malfunction, and the low-end transistor is opened while malfunctioned, the low-end transistor can only be
detected when starting up detection, as to avoid faulty execution.
(b) Ignition voltage is provided by a pressure increase converter.
(c) Acceleration sensor performs self-detection when starting up detection.
(d) Allowed offset range of the acceleration sensor during a diagnostic cycle.
(e) Microcontroller includes AD converter, ROM, RAM, etc.
(f) Security sensor status.
Caution: There is a short-circuiting bar inside the squib circuit connector. When the connector is not
connected, the short circuit happens between the squib circuit's terminal (+) and terminal (-), as to
avoid faulty deployment caused by static electricity. When the connector is bad and the short-circuiting
bar is connected, the fault symptom may not be eliminated.
4. Clear the trouble code
When the X-431 diagnostic instrument receives the "Clear the trouble code" order sent through the serial inter-
face, the trouble code inside the ECU will be cleared. However, if an internal trouble code is recorded or has a
collision record, it will not carry out this order.
(a) Malfunction status display.
When the working voltage is supplied to the SRS-ECU through a battery, the SRS-ECU will light the warning
lamp to inspect the light bulbs. During the initialization stage, the warning lamp will remain on for 6-7 s, and
in order to inform the driver that the system has a malfunction, the warning lamp will continue to remain on
after the working voltage is supplied. If the history trouble code’s quantity is less than 16, the warning lamp
will remain lit for 6-7 s after turning the ignition on and then turn off automatically. If the history trouble code’s
quantity is 16 and the current malfunction appears, it will be recorded and the first history malfunction record
will be automatically removed.
(b) Malfunction indicator.
When the system has malfunctioned, the warning lamp will be always on.
A displayed or history malfunction can only be reset by service personnel. A SRS-ECU internal malfunction or
malfunction’s "collision record" cannot be reset. In this situation, the SRS-ECU mus\
t be replaced.
(c) Microcontroller - independent warning lamp is lit.
The controller has a self-diagnosis function. If the inner controller malfunctions, the warning lamp will always
be on.
(d) If the airbag warning lamp is always on, please inspect it according to the following steps.
The first step of inspecting any of the malfunctions is to detect the malfunction’s position with a scanner. Then
carry out the inspection using the corresponding part’s inspection method. If the scanning result is an internal
malfunction or having to do with airbag execution, the SRS-ECU can be di\
rectly replaced.