2008 GEELY CK air condition

222(2) Multipath transfer
Noise caused by bouncing of radio waves off
obstructions is called "multipath transfer".
Multipath transfer occurs when a signal from
the broadcast transmitter antenna reflects off
buildings and mountains and interferes with
the signal that is received directly.
(3) Fade out
Because FM radio waves are of higher frequen-
cies than AM radio waves, they are reflected
off buildings, mountains, and other obstructions.
For this reason, FM signals often seem to gradu-
ally disappear or fade away as the vehicle goes
behind a building or other obstructions. This is
called "fade out".
4. Noise faults
For noise troubleshooting it is very important to understand the feedback information from the customers
well, so make the best use of the following questionnaire and diagnose the fault accurately.
HINT:
In the case that the noise occurrence condition does not meet any of the above, check based on the "Recep-Multipath
TransferFade outR a dio W a veO pe ra ting c ondition w he n
noise oc c ursCause
Noise occurs at a specific
place.Strong possibility of fore ign noise .
Noise occurs when listening
to fa int broa dc asting.There is a case that the same program is broadcasted from
each local station and that may be the case you are liste ning
to different station if the program is the same.
N oise occ urs only at night.Strong possibility of the inte rfe re nce from fa r dista nt
broa dca sting.
N o is e o c c u r s w h ile d r iv in g
and at a specific place.Strong possibility of multipath tra nsfer inte rfe re nc e a nd
caused by the changes of FM waves. AM
FM

226II. Inspection1. Power switch system doesn't work
Wiring Diagram
(1) Check radio assembly (+B, ¬ACC, ¬GND)
1Check the continuity between terminals under each operating condition as shown in the table below
Standard:
2Check the voltage between terminals under each operating condition as shown in the table
Standard:
Normal:Repair or replace wire harness, connector
Abnormal:Check or replace radio assemblyMain Fuse BoxRadio and CD
BatteryFusible Link BoxIgnition SwitchTester connection Condition Standard Status
GND Consta nt Status ContinuityTeste r Connec tion Condition Sta nda rd Sta tus
+B - GND Consta nt Status 10～
14V
ACC - GND Ignition switch ACC or ON 10～
14V

2272. The radio backlight does not light up with the illumination switch ON
Wiring Diagram
(1) Check radio assembly (TAIL)
Check the voltage between terminals under each operating condition as shown in the table below.
Standard:
Abnormal:Repair or replace wire harness and connector
Normal:Check and replace radio assemblyMain Fuse BoxRadio and CDFusible Link Box
BatteryLight
Control
Switch
BatteryTeste r Connec tion Condition Sta nda rd Sta tus
TAIL - GND Combined Switch (Light switc h) 10～
14V

229(3) Tweeter speaker assembly inspection
1Disconnect speaker connector
2Check resistance
Notice:
Do not remove the speaker during inspection.
Standard Value: 4Ω¸
AbnormalReplace tweeter speaker assembly
NORMALCheck wire harness and connector
(4) Check front speaker assembly
1Disconnect speaker connector
2Check resistance
Standard Value: 4Ω¸
Abnormal:Replace front speaker assembly
Normal:Check wire harness and connector
(5) Check rear speaker assembly
1Disconnect speaker connector
2Check resistance
Standard Value: 4¸
Abnormal:Replace rear speaker assembly
Normal:Check wire harness and connector
(6) Check wire harness and connector
Abnormal:Repair or replace wire harness and connector
Normal:Check and replace radio assembly
(7) Check and replace radio assembly (+B, ACC, GND)
(a) Check the continuity between terminals under each operating condition as shown in the table below.
Standard:
(b) Check the voltage between terminals under each operating condition as shown in the table below.
Standard:
Normal:Repair or replace wire harness and connector
Abnormal:Check and replace radio assemblyTester connection Condition Standard Status
GND Consta nt Status ContinuityTeste r Connec tion Condition Sta nda rd Sta tus
+B - GND Consta nt Status 10～
14V
ACC - GND Ignition switch ACC or ON 10～
14VΩ

231(4) Check if the radio auto-research function works
yPerform the radio auto-research function to see if it works
Standard: The operation works.
Normal:Check and replace radio assembly
Abnormal:Check radio assembly (+B, ACC, GND)
(5) Check the radio assembly (+B, ACC, GND)
1Check the continuity between terminals under each operating condition as shown in the table below.
Standard:
2 Check the voltage between terminals under each operating condition as shown in the table below.
Standard:
Abnormal:Repair or replace wire harness and connector
Normal:Check and replace radio assembly
6. The tape doesn't eject
(1) Press "EJECT" and check the operation
yPress "EJECT" of the radio assembly. Check if the tape ejects.
Standard: The tape is ejected.
Abnormal:Check and replace radio assembly
Normal:Check cassette tape
(2) Check cassette tape
yCheck the ejected tape for trademark peeled off or tape box distortion or other issues
Standard: There is nothing wrong with the tape
Abnormal:There is something wrong with the tape
Normal:Replace it with another tape and re-check
(3) Replace it with another tape and re-check.
yReplace the faulty tape with working tape to see if the same fault will re-occur.
Standard: The fault is cleared
Normal:There is something wrong with the tape
Abnormal:Check and replace the recorder assemblyTester connection Condition Standard Status
GND Consta nt Status ContinuityTeste r Connec tion Condition Sta nda rd Sta tus
+B - GND Consta nt Status 10～
14V
ACC - GND Ignition switch ACC or ON 10～
14V

2342Check the voltage between terminals under each operating condition as shown in the table below.
Abnormal:Repair or replace wire harness and connector
Normal:Check and replace radio assembly
10. Power coming in, but CD player not operating.
(1) Press CD player "OPEN" to see if CD ejects.
No CD does not eject for inspection after being inserted
Yes Check if the right CD is inserted
(2) Check if the proper CD is inserted
1Check if the proper CD is inserted
2Make sure the working CD is music and it is not distorted, cracked, dirty, scratched or defected.
Standard: Working music CD
Description:
Semi-transparent CD or CD of strange shape can not be played.
Music CD recorded in PC CD-ROM and recorded CD-R can not be played.
Adapter is not needed to play 8cm CD.
Abnormal:There is something wrong with CD
Normal:Check and insert a proper CD
(3) Check and insert a proper CD
1Check and insert a proper CD.
2Check if CD is installed in reverse order.
Standard: No
Abnormal:Install the disc correctly
Normal:Clean the discTeste r Connec tion Condition Sta nda rd Sta tus
+B - GND Consta nt Status 10～
14V
ACC - GND Ignition switch ACC or ON 10～
14V

253Yes: continue with next step.
No: check the circuit, repair it and continue with step (5).
8Turn the ignition switch to LOCK.
9Check the continuity of the terminal of instrument connector and that of diagnostic interface (check the
two ends of K line).
Yes: continue with next step.
No: repair or replace the wire harness. Continue with step (5).
VMake sure to disconnect the negative terminal cable from the battery and wait for at least 60s.Disconnect
the ECU connector. 11Disconnect the connectors of the instrument cluster 12 Are the connector terminals 5, 7 and 9 and those of instrument cluster continuity?
Yes: continue with next step.
No: replace the wire harness, and then continue with step (5). 13Remove ECU and see whether the terminals are in good condition and whether the shorting bar is
broken.
Yes: replace the ECU.
No: reconnect the ECU connector, and then continue with next step.
(3) Make sure of the nonrecurrence of the trouble after repair
1Turn the ignition switch to LOCK.
2Disconnect the negative (-) terminal cable from the battery and wait for at least 60s.
3Connect all the ECU connectors.
4Connect the connector of driver airbag assembly.
5Connect the connector of passenger airbag assembly.
6Connect the connectors of driver and passenger seat belt pretensioners (vehicle with pretensioner).
7Connect clock spring connector.
8Connect the negative (-) terminal cable of the battery.
9Turn the ignition switch to ON.
VIs the SRS warning light working normal?
Yes: the trouble is eliminated. Explain the repair procedures to the Customer.
No: recheck symptoms of the trouble. Repeat these procedures from the first step if the trouble reoccurs.

2575Remove left trim plate.
6Loosen all the SRS unit connectors.
7Check the wire harness between the connector terminals of SRS unit and that of clock spring for the
following:
yGround.
yShort circuit with power supply.
yOpen circuit.
8Is the above-mentioned wire harness normal?
9Normal: completion of trouble diagnosis, and install all the parts.
VAbnormal: replace the wire harness.
6. Passenger side trouble
DIAGNOSTIC PROCEDURES
(1) Is there any passenger airbag assembly installed on the vehicle?
Yes: continue with next step.
No: continue with step (5).
(2) Check the cautions of passenger airbag assembly connector
yIf it is not handled properly, the airbag assembly may be triggered and deployed, leading to serious injury
to a person. Therefore, prior to handling, read the service cautions carefully.
See service cautions for SRS.DTC
B1 352
B1 353
B1 354
B1 355
CAUTION
●
If it is not ha ndle d prope rly, the a irba g a ssembly a nd retrac ta ble sea t belt ma y be
trigge re d a nd deploye d/te nsione d, le a ding to serious injury to a pe rson. There fore , prior
t o ha ndling, r e a d t he s e r vic e c a ut ions c a r e f ully.
See service cautions for SRS.
If there is passenger airbag●
The re sistanc e be twe e n pins 13 a nd 14 of SRS unit c onne ctor is out of range
●
The wire ha rness betwe en pins 13 a nd 14 of the SRS unit is short c irc uited●
P ins 13 a nd 14 of the SRS unit c onnec tor are ope n c ircuite d, e .g. the re is nopassenger airbag
●
Passenger airbag assembly trouble
●
Trouble of the conne c tor be twe e n pa ssenger airbag a ssembly a nd SRS ECU
●
Trouble of the conne c tor be twe e n the SRS unit and ground point
●
The circuit between passenger airbag assembly and SRS ECU is open or short
●
The c irc uit betwee n SRS unit a nd ground point is open or short●
SRS unit trouble P a sse nge r airba g a sse mbly trouble (high or low resista nc e , short c ircuit, ground, etc .)
Checking
conditions
P ossible Cause