warning light GREAT WALL FLORID 2008 User Guide

Downloaded from www.Manualslib.com manuals search engine 169Vehicle Body Electronic System
Combination meter system
Connected engine ECU #8
Connected engine ECU #59
To light brightness
regulator switch
Parking brake lamp
Parking brake switch
Brake fluid level switch
Oil pressure switch
Driver seat belt switch
Fuel sensor
Speed sensor
Connected combination meter A
Driver seat belt switch Connected parking brake switch Fuel pump, fuel sensor Coolant temperature sensor Engine speed sensor
Speed sensor Connected combination meter B
Brake fluid level warning switch
Brake warning lamp
Low oil pressure indicator
Seat belt unfastened indicator
Low fuel alarm Fuel gauge
High water temperature alarm
Low water temperature alarm
Connected coolant
temperature sensor Connected central
control ECU #18
IC module
LCD display
Odometer
Tachometer

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Combination Meter
If something is wrong with the meter, check the relevant component and circuit according to the connector defi-
nition. If the failure still cannot be eliminated, check whether the instrument itself has malfunctioned in the fur-
ther steps. The following diagram shows the view of the meter connector and its numb\
er.
Pin definition of each combination meter
32-core connector
Pin No.FunctionPin No.Function
1Meter ground17Signal ground
2Speed signal input18Internal lighting (+)
3Vehicle speed signal input19Airbag indicator lamp
4Fuel gauge input20Door open warning lamp
5Water temperature gauge input21Seat belt unfastened indicator lamp
6Vehicle speed signal output22Battery
7Central door lock signal23Ignition
8Clock test24High beam ( - )
9Meter interior communication25High beam (+)
10Empty26Right turn signal lamp
11ABS failure indicator27Left turn signal lamp
12Engine failure indicator28Charging indicator
13Brake system failure indicator29Engine maintenance indicator
14Oil pressure indicator30EBD indicator
15Rear fog lamp indicator31O/D switch indicator
16Parking brake indicator32Front fog lamp indicator
12-core connector
Pin No.FunctionPin No.Function
1P position7Master lighting switch indicator
2R position8Rear deforster indicator
3N position9CAN H
4D position10CAN L
52nd gear11Oil/water separator indicator
61st gear12Diesel engine preheating indicator
12-core connector32-core connector

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Air Conditioning System Terminal Definition
PinInterface signalPinInterface signal
AEmergency lamp relay2Parking lamp drive +
BPower supply (+)3Safety indicator
lamp drive +
CGround4Blower LO gear drive +
DPower supply5Blower common
terminal GND
EAir conditioner
request signal6Blower HI gear drive +
FBlower relay9Blower M1 gear drive +
10Blower M2 gear drive +
Air conditioner switchHazard warning switch + rear defroster switchBlower + night lighting + safety instruction
Cylinder
Blade
Exhaust valve
Rotor
Exhaust valve
Compressor
Entire outline structure (shown on the left)
Rotary vane compressor’s operation
As the diagram shows, when the rotor is rotating under an
external force, due to the synergism of centrifugal force and the
oil pressure difference on the five vanes of the rotor, their edge
clings to the cylinder wall. Because the fixed cylinder is oval
shaped, while rotating on the rotor, the rotor vanes spread and
retract according to the cylinder's geometrical shape, which in
turn makes the crescent shape consisting of the cylinder, vanes,
etc. to change continuously, so as to achieve the functions of
suction, compression, and exhaustion.

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SRS airbag warning lamp inspection
1. When the ignition switch is set to the ON position, check if the SRS warning lamp remains on for 6-7 s.
2. If the SRS warning lamp shuts off after 6-7 s, this is normal.
3. Except for the items listed above, diagnostic inspection is still needed\
.
System diagnosis
Airbag ECU will initiate a series of diagnostic test cycles to check if the airbag system functions are ready for
use. This diagnostic test can guard against the restraint system's faulty execution and at the same time guarantee
prompt execution in a collision. If a malfunction appears, airbag ECU will store the appropriate trouble code and
light up the warning lamp to point out the malfunction, as to make maint\
enance more convenient.
Diagnostic interface
Troubleshooting
Basic processes of the malfunction diagnostic
There are two SRS-ECU malfunctions types classified by time: current malfunction and history malfunction.
The malfunction types categorized by property are: external malfunction \
and internal malfunction.
Current malfunction trouble codes and history malfunction trouble codes may exist at the same time. External
malfunction trouble codes can be eliminated with a diagnostic instrument, but the internal malfunction trouble
codes cannot be cleared unless the SRS-ECU is changed.
Caution: After installing a new SRS airbag system electronic control unit, the airbag system warning
lamp will remain on for 6-7 s when the ignition switch is set to the ON position. This indicates that
the SRS airbag is operating properly. At this point, the system does not need to be inspected and
repaired. Aside from this case however, the system should be diagnosed and repaired.
Warning lampabnormal
Connect the scannerand K wire to scan the ECUDetected faultTroubleshooting Clear the trouble codes

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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.

Downloaded from www.Manualslib.com manuals search engine 219Airbags
NO.Troubleshooting listExplanation
1Airbag system warning lamp not litAirbag system warns of circuit malfunction
2Airbag system warning lamp is always onAirbag system warns of circuit
malfunction or external malfunction
2. Airbag system warning lamp does not lit
Inspection
statusAirbag system warning lamp does not lit.
Possible
causes
• Voltage disappears (fuse open circuit)
• Combination meter malfunction
• Wire harness malfunction between the instrument cluster and ECU unit
Diagnostic procedures
While performing the first malfunction detection, it is suggested to wiggle the wire harness and plugs to check for
intermittent or poor contact. If there is, please check whether the plugs, terminals, and the wire harness are connected
properly and undamaged. If the above mentioned problems do not exist, pl\
ease take the following steps.
StepsInspectionOperation
1
Detect other wire harness and instrument cluster indicator
lamps
• Set the ignition switch to the ON position
• Are other warning and indicator lamps on?
Yes
Set the ignition switch to the LOCK
position, and then proceed to the
next step
No
Detect the instrument cluster's
power supply system and the
grounded system (fuse)
2
Inspect the light bulbs
Warning:
Incorrect airbag system component operation will cause the
airbag and preload seat belt to opened accidentally, which
may cause serious injuries. Please read the airbag system
services warning before working on the airbag components
• Set the ignition switch to the LOCK position
• Disconnect the battery's negative cable and maintain for at
least 60 s
• Remove the combination meter
• Check whether the two corresponding pins of the airbag
warning lamp are conducting
Yes
Go to the next step
No
Replace the combination meter
3
Detect the wire harness connection between the ECU unit and
the instrument cluster
• Set the ignition switch to the LOCK position
• Disconnect the battery's negative cable
• Disconnect the instrument cluster plugs
• Check whether the warning lamp's corresponding circuits
are conducting
YesGo to the next step
No
Replace the wire harness
Malfunction diagnosis and troubleshooting
1. Warning lamp is not on or always on

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Alignment area
(a) Whether there are broken connectors or protective
pipes and deformed terminals.
(b) Whether the housing is damaged.
(c) Inspect whether the clock spring's upper connector
terminal and lower corresponding connector terminal is
conducting.
Clock spring central involution
Screw in the clock spring clockwise all the way, and then
turn it 3.5 circles in the reverse direction, until the position
pin's block boss matches the block hole (as shown on the
left).
Caution: If the clock spring is not in the involution
central, the steering wheel will be unable to rotate
midway or cause clock spring circuit failure, which will
obstruct the normal operation of the SRS airbag.
6. Steering wheel and airbag module subassembly installation
(a) After pulling out the clock spring's position pin, install the steering wheel and airbag module su\
bassembly.
Caution: While installing the steering wheel and airbag module subassembly, please do not block the
clock spring wire harness.
(b) After installation, try to turn the steering wheel left and right to its proper position, and check for anything
abnormal.
7. Inspection after installation
(a) Lightly turn the steering wheel left and right to check whether there is anything abnormal or for any
strange noise. (Driver side airbag module, clock spring).
(b) Set the ignition switch to the ON position.
(c) The SRS warning lamp will remain on for 6-7 s and will then die out.
(d) If the warning lamp is always on or shows other symptoms after 6-7 s, troubleshooting must be perf\
ormed.
(e) Inspect whether the clock spring circuit is open circuited. If yes, please replace it with a new \
one.
(f) If no, check the other circuits.
Airbag Module Disposal
While discarding the airbag module or a vehicle carrying a SRS airbag, please discard according to the following
steps.
Discarding essentials of the airbag module before deployment
1. Deploy the airbag before discarding SRS airbag.
2. Deploy the airbag outside the vehicle when replacing the airbag module.
3. There may be some smoke when deploying the airbag, so make sure to operate near a smoke
detector.
4. When deploying the airbag, the sound will be very loud. Please ask nearby people to plug their ears,
and try not to operate near residential areas.
Airbag deployment
Wa r n i n g : T h e f o l l o w i n g s t e p s c a n p r e v e n t s t a t i c
electricity trigged accidental deployment, so please
carefully follow them.
1. Park the vehicle on a flat surface.
2. D i s c o n n e c t t h e b a t t e r y ' s n e g a t i v e a n d p o s i t i v e
terminals, and remove the battery from the car.
Caution: Avoid wearing apparel which may generate
friction due to electricity. Disconnect the battery's
p o s i t i v e a n d n e g a t i v e t e r m i n a l s , a n d c o m m e n c e
operation after waiting 60 s.
3. Remove the airbag module according to the driver side
airbag's normal removal procedures.
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