2008 GREAT WALL FLORID sensor

Downloaded from www.Manualslib.com manuals search engine GWFLORID Maintenance Manual144
Double-colored wire: Primary color is Red, secondary color is Blue, mark\
ed as RBl.
0.5BrGr means Brown wire with a Gray fine wire, and sectional area is 0.\
5 mm2.
Areas of importance in circuit maintenance
1. Before operating any electronic devices, and when tools or maintenance devices may easily make
contact with an uncovered electronic terminal, please make sure to turn the ignition switch to the LOCK
position, and then disconnect the battery's negative cable to avoid injury or vehicle damage. When the
ignition switch is on the ON position, please do not disconnect the battery's connecting wire or take out
the power's fuse, regardless if the engine is running or not.Otherwise it would seriously damage the
ECU and related microelectronic devices such as sensors.
2. When changing the fuse, please make sure that the new fuse possesses the proper current rating,
and is not above or below this rating.
3. When repairing the wire harnesses of the airbag and pretensioner, only specified contact points,
plugs, and wires are allowed to be used.
4. Before repairing the wire harness, make sure to eliminate any factor that might cause damage,
for example, the edge of a vehicle body part is too sharp, or the used electronics are damaged or
corroded.
5. Shielded wire should not be repaired, it must be replaced entirely once it is damaged.
6. Unless it is specified during the test, please do not use an analog multimeter to test the ECU and
sensor, instead use a high-impedance digital multimeter (internal resistance should be ≥10 kΩ) or a
vehicle multimeter for inspection.
7. When inspecting the connector with a digital multimeter, take the waterproof rubber cover off the
connector, and tightly insert the test pen along the connecting terminal. Don't use too much force, as
to avoid cracking the connector.
Circuit inspection steps
The principle of troubleshooting is to confirm the "possible cause". Once the possible cause is confirmed, the
components that need to be inspected are limited to the components that are related to the possible cause. The
confirmed possible cause should be based on theory and be supported by facts, but not just by intuition. If
one tries to solve the problem but does not adopt the proper troubleshooting steps, it may make the problem
worse. Then the possible cause not only can't be confirmed, but also maintenance can't be performed properly.
Troubleshooting should adhere to the four steps below:
1. Observe the symptoms carefully, inspect if there is anything else abnormal, and record it.
2. While confirming the possible causes, study the circuit diagram carefully, and regard it as a whole
system in order to understand the circuit. Thorough knowledge of switches, relays, and other
electronic components is obligatory for proper analysis.
3. Inspect and eliminate the problems one by one until the cause is found.
4. After the malfunction is fixed, make sure to check if the inspected system is working properly, and also
check if the maintenance may have caused any new problems.
Compres-
sor relay
Reserve
Sunroof (Elite) Lamplet
Reserve
Reserve
Reserve
Reserve Door and window Reserve Blower
Lamplet
relay Flasher relay Blower high
speed relay (Elite) Door and
window relay (Comfort, Luxury) Blower relay
Reserve
Front fog lamp
Combination
meter
Interior
lighting
central
door lock
brake lamp
CD player
Reserve
Reserve
Reserve
Cigarette
lighter
Rearview
mirror
Front wiper
Charge
Airbag
Reserve
Reverse lamp Rear fog lamp
Rear wiper
Defroster Compressor
ACC relay
IG relayRear wiper
relay Defroster
relay
Front fog
lamp relay Rear fog
lamp relay
Warning lamp
Turn signal lamp
Cab No.1 fuse box
Fuse Box

Downloaded from www.Manualslib.com manuals search engine GWFLORID Maintenance Manual152
Engine ECUInjector
Starter, starter excitation, knock sensor
Speed sensor
Brake switch
Brake fluid level switch
Clutch switch
ABS ECU
Front wiper
motor
Front combination lamp LH
Front fog lamp LH
Radiator fan
High & low pitched horn
Crankshaft position sensorFront & rear oxygen sensor
Condenser fan motor
Compressor clutch
Alternator, alternator regulator
Tristate pressure switch
Front fog lamp RH
Washer motor
Wheel speed sensor
Front combination lamp RH
Camshaft position sensor
Throttle position sensor
Wire Harness Distribution Chart for the Overall Vehicle
Engine compartment wire harness
ABS ECU
Positive fuse box
No. 2 fuse box
Reverse sensor ECU
Key Electrical Component’s Module Schematics for the Overall
Vehicle (Continued)

Downloaded from www.Manualslib.com manuals search engine 153Vehicle Body Electronic System
High mounted brake lamp
Rear defroster positiveRear wiper motor
Trunk lock motor, door lamp switch
Opener switchRear defroster negative
Theft deterrent indicator lampCombination meter CD/DVD
Air conditioner speed adjuster, AC switch, rear defroster switch
Air conditioner temperature sensorF r o n t P a s s e n g e r s i d e airbag assembly
BlowerGlove box lighting
Cigarette lighter and lighting
Airbag ECU assembly 2
Diagnostic port
Acceleration pedal
Power rearview mirror switch, light brightness regulator
Trunk door wire harness
Central lock controller
Dashboard wire harness

Downloaded from www.Manualslib.com manuals search engine GWFLORID Maintenance Manual154
Door lock motorDoor and window main switchesMiddle & low tone speaker
High tone speaker
Outer power rearview mirror
Window regulator motor
Door lock motor
Wi n d o w r e g u l a t o r switch
Window regulator motorMiddle & low tone speaker
Fog lampLicense plate lamp
Rear
combination lamp LH
Rear combination lamp RH
Rear wheel speed sensor RHParking brake switch
Front door light switch LH
Seat belt pretensioner
Rear wheel speed sensor LH
Rear door light switch LH
Backup power supply
Front & rear door wire harnesses
Vehicle body wire harness
Front doorRear door
Reverse sensor ECU
Reverse sensor probeOil pump motor

Downloaded from www.Manualslib.com manuals search engine 155Vehicle Body Electronic System
Condenser fan motor
Connected compressor
Oil pressure switch
Front oxygen sensor
Connected reverse switch
Connected engine speed sensor Connected
ignition coil
Connected speed sensor Connected coolant temp. sensor
Canister control valve
Connected combination meter A
Connected antenna
Diagnostic port
Connected AC switch Connected air conditioner temperature sensor
Front passenger side airbag
Connected speed adjustive resistance, blower
Front window regulator RH
Front window regulator switch RH
Front medium woofer RH
Front tweeter LH Right outer electric mirror
Front passenger side central door lock switch
Front door lamp switch RH
Front passenger seat belt pretensioner Front door lock motor RH
Ground
plate 3
Connected cigarette lighter (lighting)
Connected cigarette lighter
Front passenger seat belt switch
Connected parking brake switch Connected air conditioner governor & front
passenger seat belt unfastened indicator lamp
Connected CD player
Connected engine ECUConnected ground P1#
Connected ground P2#
Connected starter
Connected knock sensor
Connected starter field coil
Connected inlet
temperature pressure
sensor
connected
electronic throttle
Rear oxygen sensor
Connected 4th
cylinder injection
nozzle
Connected 3rd
cylinder injection
nozzle
Connected 2nd
cylinder injection
nozzle
Connected 1st
cylinder
injection nozzle
Connected generator
Connected engine armature Connected front combination lamp RH
Connected front fog lamp RH
Connected rear washer motor
Connected front washer motor
Connected front wheel speed sensor RH
Right ground
Connected A/C pressure switch
Connected phase sensor
Connected low
pitched horn
Connected front
combination lamp LH
Rediator fan motor
Connected front
fog lamp LH
Connected high pitched horn
Battery
negative
Body
ground
Battery
Left ground Connected
brake lamp
switch Connected brake fluid warning switch
Connected theft deterrent indicator Theft deterrent ECU 1Connected lock
cylinder lightConnected ignition
switch (white)
The key is inserted into the switch
Right combination switch (wiper) Connected airbag ECU (yellow)Ground
plate 2
Ground
plate 4
Connected accelerator pedal
Ground plate 1
Left outer electric mirror
Front medium woofer LH Front door lock motor LH
Rear medium woofer LH
Rear window regulator switch LH
Rear door lock motor LH Rear door lamp switch LH
Ground point ACapacitor
Vehicle power supply
Rear fog lamp LH Left license plate lamp
High mounted brake lamp
Ground point Trunk opener switch
Trunk motorRear wiper motor
Rear windshield defroster “-”
Trunk lamp switch Right license plate lamp
Rear fog lamp RH
Rear combination lamp RHRear wheel speed sensor RH
Rear window
regulator RH
Rear window
regulator switch RH
Rear door lock motor RH
Rear door lamp switch RH Rear medium woofer RH
Ground point B
Rear combination lamp LH
Rear windshield defroster “+”
Rear wheel speed
sensor LH
Rear window regulator LH
Fuel pump, fuel sensor
Rear interior dome lamp
Front door lamp
switch LH
Driver seat belt pretensioner Driver seat belt switch
Front tweeter LH
Connected light brightness regulator switch
Connected rearview mirror switch (white)
Connected glove box lamp
Front window regulator LH Left combination switch (light)
Connected main airbag, horn switch
Window regulator mainly
control switch, central door
lock mainly control switch Connected central door lock controller (white)
Connected front wiper motor
Connected clutch
switch
Connected ABS ECUBattery
positive
Connected front wheel
speed sensor LH Engine groud
Starter connect to
battery positive
Generator connect to
battery positive
Wire Harness Relationship and Plug-in Connections Numbered Diagram

Downloaded from www.Manualslib.com manuals search engine GWFLORID Maintenance Manual168
Airbag & ABS

SRS indicator lamp
Engine ECU 72
Central control ECU #17
Airbag ECU housing hole location marks are signs showed on the housing
Airbag ECU (yellow) (Luxury, elite)
Airbag ECU (yellow) (Comfort) Airbag ECU housing hole location marks are signs showed on the housing
Theft deterrent controller A7
Diagnostic port
Front passenger seat
belt pretensioner
Driver seat belt
pretensioner
Left brake lamp
Right brake lamp
High mounted brake lamp
Driver side airbagFront passenger side airbagFront wheel
speed sensor LH
Front wheel
speed sensor LH
Rear wheel
speed sensor LH Front wheel speed
sensor RH
Rear wheel
speed sensor RH
Front wheel
speed sensor RH
Rear wheel speed
sensor RH
Connected brake
lamp switch
Connected high
mounted brake lamp
Main airbag
Connected front
passenger side airbag
Rear wheel
speed sensor LH
Airbag electric control module ABS electric control module
Brake lamp switchto engine ECU 51
to engine ECU 21
Driver seat belt
pretensioner
Front passenger seat
belt pretensionerClock spring

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

Downloaded from www.Manualslib.com manuals search engine 173Vehicle Body Electronic System
Engine
Connected generator
Canister control valve
Rear oxygen sensor
1st cylinder injection nozzle
Phase sensor Electronic throttle AC pressure switchConnected clutch switch
Air conditioner
temperature sensor
Connected accelerator pedal Front oxygen sensorRear oxygen sensorKnock sensorCondenser fan motor
Connected brake lamp switch
Engine ECU
2nd cylinder injection
nozzle 3rd cylinder injection
nozzle 4th cylinder injection
nozzle Connected oil
pressure switch Canister control
valve
Front oxygen sensor
Inlet pressure & tem. sensor
Coolant temperature sensor Accelerator pedal module Electronic throttle AC temperature
sensor Knock sensor
Engine speed sensor
Phase sensor
Fuel pump relay
Connected combination meter Connected speed sensor
Engine malfunction indicator lamp Engine service indicator lamp
Compressor relay
Compressor clutch
Central pressure switch Starter relay 86
Connected AC switch AC pressure switch
Connected brake lamp switch
Connected brake lamp switch Condenser fan
Rediator fan Fan relay lowScanner
Fan relay high
Connected airbag
Connected theft deterrent controller A8
Connected
combination meter
Ignition coil
Coolant temperature sensor
Rediator fan motor
Engine speed sensor Wheel speed sensor
Fuel pump, fuel sensor Inlet temperature
pressure sensor
Connected ABS
Spark plug
Fuel pump
Electric control module
Ignition coil
Main relay
Injection nozzle
IG1 relay