2006 GREAT WALL HOVER display

CD Player and Air Conditioning System-6
Turn the ignition switch from OFF to ON
The display symbols all light up
failure of the switch or display tune
NO
Press down “Temp+” switch
Enter into self-diagnosis procedur1?
NO“ Te mp +” switch failure
Step 1:
Display “01”
(set t he temperature zone)
all other display symbols turn of
f
Press
down
“Temp+” switch
Step 2: Display
“02”(set the
temperature
z one)
The inspection procedures
During the period of 10 seconds after the engine is started(turn the ignition switch from OFF to ON), press OF F, A U T O ,
RR and MODE once more, and the pressing of MODE switch shall last at least 2 seconds
.
A ll sensors are good.
Display
“000”(outsidetemperature)

CD Player and Air Conditioning System-7
C ode off ailu re S ensor f ai lure
10 0 O pen c ircu itof outsid e t em perature sens or
20 0 S hortcirc uit o f o utside temp eratur e s ensor
01 0 O pen c ircu itof i nside temp eratur e s ensor
02 0 s hortcirc ui t o f ins ide t em perature sens or
00 1 O pen c ircu itof temp erat ur e s ensor o f the evap orator
00 2 S hortcirc uit o f tem perature sens or ofthe e vapo rator
Step 3: Display “03”(set the temperature zone)
Display the outside temperature value
Press down “Temp+” switch
Step 4: Display “04”(set the temperature zone
)
Sensor
failure
The code of the sensor with failure
is showed on the display screen
.
Press down
“Temp+” switch
Press down
“Temp+” switch
Step 5:
Display “05”
(set t he temperature zone)
Display the inside temperature value
Display the temperature value of the evaporator
Press down
“Temp+” switch

CD Player and Air Conditioning System-8
Step 6: Display “06”(set the temperature zone)
Press down “Temp+” switch
Display the detection code of mode/
temperature damper executor
Press down “Te mp+” switch
Step 7: display
“07”(set the temperature zone)
Action of the executor mechanism
:
M ode damper: wind to the person
Circulation damper: internal circulation
Te mperature damper: cold end
Wind amount: the maximum
Compressor: enabled Note: X is a digital number without specific meaning; the code
number
is displayed in the outside temperature display zone.
d isplay
“08”
C

Code number Code Meaning
0x0 Temperature damper executor works normally
0x1 Detection for temperature damper executor is in progress.
0x2 Temperature damper executor failure
00x Mode damper executor works normally
01x Detection for mode damper executor is in progress.
02x Mode damper executor failure

CD Player and Air Conditioning System-9
Step 9: display “09”
Action of the executor mechanism:
Mode damper: wind to the person and the fee
Circulation damper: internal circulation
Temperature damper: in the middle
W ind amount: bigger
Compressor: enabled
Action of the executor mechanism
:
M ode damper: wind to the feet and defrost
Circulation damper: external circulation
Te
m perature damper: in the middle Wind amount: small
Compressor: off
display
“
10”(set the temperature zone)
Action of the executor mechanism
:
M
ode damper: wind to the person and the feet
Circulation damper: external circulation
Te mperature damper: hot end
Wind amount: medium
Compressor: enabled
Press down
“Temp+” switch
Press
down
“Temp+” switch

CD Player and Air Conditioning System-10
Refrigeration of air conditioner failed
T rou ble Des crip tion s Ana l ysis o f the Cause
1.No pick -up o f com pressor 1.
fuse burned down , com presso r’s r elay dama ge
d
2. pressu re sw itch contac t d isco nn ected, short c ircu itor open circ uit o f the
ro utin
g
3. open circ ui t o f clutch’ s w indi ng
4. sw itch burned down
5. ma ster relay b urne d d ow
n
6.
s lid e o f the clut ch
7. beltof the c om presso r b roke ortoo l oose
8. comp ressor failur
e
9. sens or failur e(ju dg ed by read ing t he failu recode
)
10. insu ffic ient cold me dia, lowe r system p ress ur e(< 0 .97M Pa
)
11. system pressu re abov e 1 .37M Pa
12. water t em peratu re of the e ngine t oo high
13. V oltag e o f the clut ch below 7
V
2. Pick -up o f Com pressor 1.
norm
ally -ope n c ontact of the c om presso r’s r elay stuc k a nd seriou s leaka ge
of system cold me dia, system runn ing s hortof cold me di
a
2. no wind from the b lowe
r
R e frig eratio n of
ai r c ondition in
g
syst emfaile
d
3.no wind from the b lowe
r 1.
fuse burned down
2. mo tor b rush ofthe b lowe r dam aged
3. sw itch ofthe b lowe r dam aged
4. comi ng off o f d istrib utio n w ire c onnector s o r circu itdisc
onne cted
5. speed-ad justin g m odule d amaged
6. no wind from the b lowe r w hen a t high s peed, h igh- sp ee d r elay dama ge
d
Press down “Temp+” switch
Step 11: display “11”(set the temperature zone)
Action of the executor mechanism
:
M ode damper: defrost
Circulation damper: external circulation
Te mperature damper: cold end
Wind amount: the minimum
Compressor: off
Attention: during the inspection period fr om step 7 to step 11, the controlle r
will for cibly transit the output signal based on
the code number displayed on the integrated display screen to the functioned executor; the inspection must be done with
such
m ethods as visual inspection, listening to abnormal sound or touching the air vent by hand so as to judge whether
there is any improper operation.
T rouble Diagnosis and T roubleshooting of A i r Conditioning System
Air cooling system

Safety airbag-8
Internal failure determined by SRS-ECU
Serial
No. List of failure Description of failure
1 Micro-controller AD converter or EEPROM is faulty (the micro controller will be reset
and alarm lamp is light when the RAM has failure.)
2 Driver’s front airbag ignition loop Enable the failure
Measure the failure of loop
3 Passenger front airbag ignition loop
(if realized) Enable the failure
Measure the failure of loop
4 Seat safety belt preloaded ignition loop
(if realized) Enable the failure
Measure the failure of loop
5 Passenger side safety belt preloaded
ignition loop (if realized) Enable the failure
Measure the failure of loop
6 Driver’s side airbag ignition loop
(if realized) Enable the failure
Measure the failure of loop
7 Passenger side airbag ignition loop
(if realized ) Enable the failure
Measure the failure of loop
8 Maximum times of explosion of safet y
belt pre-tightener Reach the maximum value 6
9 Holding time of ECU ener gy
(self-supply time) Too short
10 Accelerometer Deviation range
Sensor not in constant, stable model
Sensor tests the failure itself
11 The measurement of ignition loop is
rejected continuously No cycling diagnosis test (duplicated calculation)
12 Safety sensor Calculate the safety sensor open-loop using the method that power-off
for 2 or more than 2 seconds is considered as passing
13 Initial firing current All initial firing current in normal status when the front airbag releases.
14 The ignition of side airbag is not
determined. Though SRS-ECU has received ignition information for 5 times during
HSIS cycling ignition, the ignition can not be determined due to the side
safety..

Debug the failure codes
Approach 1. The failure codes will be debugged following the ECU’s receipt from the X-431 diagnostic tester of the debugging
failure codes order through the serial interface, however, if an internal failure code is recorded or one impact is
recorded, the debugging will not be executed.
Approach 2. Ground 488# line for 5 times in 10 seconds to debug the failure codes.
Failure status display (alarm lamp keeps illuminating).
1. Bulb test
SRS-ECU will light the alarm lamp in order to test the bulb after working voltage is provided to it through the battery. The lamp
will flash for 6 times and then extinguish at 1HZ in the initial phase. The alarm lamp will keep illuminating after the working
voltage is provided in order to inform the driver’s system failures. The alarm lamp will keep illuminating for 6 seconds after the
ignition on and then be extinguished if the history-accumulated failures are less than five times. In the initial phase, SRS-ECU will
not prepare to test impact and stop release till the circuit is stable. Therefore, alarm lamp’s display manner will be one of
following projects in the initial phase. (Table 4.9).
Project 1. If the impact is recorded or the number of history accumulated failures is or more than 5,the alarm lamp will keep
illuminating, simultaneously, it will also keep illuminating if there is a possible explosion failure.

Safety airbag-9
Project 3 functional working (neither possible explosion failure or historical failure).
Table 4.9 indicator lamp’s activities after ignition
2.Failure indication
The alarm lamp will indicate it in case any failure arises. If the external failure is a historical one, the indication will be called off. If
the number of history-accumulated failures is or more than 5, the alarm lamp will keep illuminating albeit no failure emerges. The
case of low power will be excluded.
A displayed or historical failure can but only be reconfigured by the service personnel. An internal failure or impact record can not
be reconfigured, in these cases, SRS-ECU must be replaced.
3.Micro controller-independent alarm lamp illumination
The micro-controller in clear failure status can not work therefore can not control the alarm lamp. In this case, the alarm lamp
will be directly lighted via suitable circuit despite of the micro-controller. As following,
The battery for SRS-ECU fails, the alarm lamp will be continuously lighted through the lamp drive function.
b. No internal working voltage, the alarm lamp keeps illuminating
c. Reconfiguration caused by watchdog’s trigging failure, the alarm lamp flashes.
d. No work of micro-controller, the alarm lamp keeps illuminating
e. Incomplete plugging-in of SRS-ECU connector, the alarm lamp keeps illuminating via shoring bar Next explain the diagnostic
procedure by taking some examples
If the alarm lamp is found keeping illuminating, please test it according to the following procedure even it extinguishes finally.
First test the failure region with the scanner followed by the test in the failure region with the corresponding approaches and
steps.
a If an internal failure or the explosion of safety airbag is scanned, replace the SRS-ECU
b.Troubleshooting Project 2. The number of history- accumulated failures is or more than one and less than 5. (The case of low power is excluded)

Safety airbag-10
1. Extinguishments of safety airbag system alarm lamp
Troubleshooting
Extinguishments or normal-light of alarm lamp
NO . Troubleshooting item Description
1 T he warning la mp of safety a irbag
system is not displayed. Safety airbag system warns circuit failure
2 T he warning la mp of safety a irbag
system is light normally. Safety airbag system warns circuit failure or external
failure.

1 Extinguishments of safety airbag system alarm lamp
Test status Safety airbag system warns circuit failure.
Possible causes No voltage (fuse shutoff)
Combined instrument failure
Failure of wiring harness between instrument cluster and ECU unit

Diagnostic procedure
When first carry out failure test, joggle the wiring harness and plug to test whether there is periodical bad contact in the circuit, if
it so, please confirm whether the plug, terminal and wiring harness well connected and in good condition. If it is not any of previous
cases, operate according to the following steps.
Procedure Te s t Operation
Ye s Place the ignition switch in LOCK
position followed by next step
1 Test other wiring harness and instrument cluster
indicator lamp
·place the ignition switch in ON position
·light other alarm and indicator lamps No Test the instrument cluster power-supply
system and grounding s ystem (fuse), then
go to step 5.
Yes Next step
2 Bulb test
Warning:
Incorrect handling with the safety airbag system
units will cause the safety airbag’s improper
release and pretension of safety belt, which will
lead to serene accidents. Please read safety airbag
service warning before handling the safety airbag
units.
·Place the ignition switch in LOCK position。
·shut off accumulator negative line and keep the
status for at least 60 seconds.
·Remove the combined instrument.
Test the connection between the two
corresponding stitches of safety airbag alarm lamp No





Rep la ce th e b ulb of a larm la mp.