2008 GEELY MK audio

Suspected Area
1. Wire between CD box and main unit
2. CD box
3. CD bag
4. CD PLAYER main unit
1. Wire between CD box and main unit
2. CD box
1. CD box
2. CD box installation Symptom
CD can not be taken out
Sound quality poor only when playing CD
(Volume faint)
CD sound jumpTester connection Condition Standard state
GND and vehicle earth Normal status ON
Tester connection Condition Standard state
+B and GND Normal status 10-14V
ACC and GND Ignition switch is in ACC or ON 10-14VII. Trouble shooting1. Power switch system does
not work
Circuit diagram
Abnormal, repair or replace wiring harness, connector
Normal, check and replace radio assembly (1) Check radio assembly (+ B, ACC, GND)
a. As shown in the table below, check connection between terminals in each operating condition.
Standard:
b. As shown in the table below, check voltage between terminals in each operating condition.
Standard:Fuse Box in Engine
CompantmentAudio System -Audio System Inspection5-42MAIN
60AFuse Box under
Instrument Panel

Tester connection Condition Standard state
TAIL and GND Combination switch (light switch) 10-14V2. Turn on light switch, radio backlight
does not illuminate
Circuit diagram
(1) Check radio assembly (TAIL)
As shown in the table below, check voltage between terminals in each operating condition.
Standard:
Abnormal, repair or replace wiring harness, connector
Normal, check and replace radio assembly
3. Loudspeakers is silent in all modes
Circuit diagramAudio System -Audio System Inspection5-43 lamp switch
Please Refer to "MK WIRING DIAGRAM"

(1) Check LCD Illumination
a. Turn the ignition switch to ACC
b. Turn on radio assembly
c. Turn on the position light
Standard: The LCD indicator of the radio assembly goes on
Abnormal: go to step (7)
Normal: go to the next step
(2) Control volume and adjust the volume balance
Adjust the volume and its balance of the radio assembly to find out the inaudible speaker.
If all speakers are mute, check and replace the radio assembly
If individual speaker is mute, then respectively check and replace the inaudible speaker.
(3) Tweeter assembly inspection
a. Disconnect the speaker connector
b. Check the resistance
Notice:
Do not remove the speaker during inspection.
Standard Value: 4 ohm
Abnormal: Replace tweeter speaker assembly
Normal: Check wire harness and connector
(4) Check front speaker assembly
a. Disconnect speaker connector
b. Check resistance
Standard Value: 4 ohm
Abnormal: Replace front speaker assembly
Normal: Check wire harness and connector
(5) Check rear speaker assembly
a. Disconnect speaker connector
b. Check resistance
Standard Value: 4 ohm
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:Audio System -Audio System Inspection5-44Tester connection Condition Standard Status
GND Normal ON

Tester Connection Condition Standard Status
+B - GND Normal 10~14V
ACC - GND Ignition switch ACC or ON 10~14V
Abnormal: Repair or replace wire harness and connector
Normal: Check and replace radio assembly
4. Unable to receive radio broadcast (poor reception)
(1) Check if the radio auto-research function works
Perform the radio auto-research function to see if it works
Normal: Check and replace radio assembly
Abnormal: Check the antenna for noise
(2) Check the antenna for noise
a. Turn on radio to AM with the ignition switch ACC.
b. Touch the antenna of the seated antenna assembly with the tip of the screwdriver.Check the speaker for
noise.
Standard: There is noise
Normal: Check and replace radio assembly
Abnormal: Check antenna assembly
(3) Check antenna assembly
a. Remove the antenna plug from the antenna assembly
b. Check for noise

Connect the radio assembly connector and turn the ignition switch to ACC.

Turn on the radio to AM

Insert a flat pan screwdriver or metal object similar to thin wire into the hole in the antenna coaxial
cable. Check the speaker for noise.
Standard: There is noise.
Normal: Check and replace radio assembly
Abnormal: Check and replace antenna coaxial cable sub-assembly
5. Cassette tape can not be inserted or played.
(1) Check for foreign object

Check the radio assembly and cassette recorder for foreign object or defect.
Abnormal: Clean foreign object
Normal: Check cassette tape
(2) Check cassette tape

Check if the cassette tape is used to record music or sound.
Replace the tape with another tape and re-check if it is faulty. b. Check the voltage between terminals under each operating condition as shown in the table below.
Standard:Audio System -Audio System Inspection5-45

Tester connection Condition Standard Status
GND Nomal ON
Tester Connection Condition Standard Status
+B - GND Nomal10 ~ 14V
ACC - GND Ignition switch ACC or ON10 ~ 14V b. 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

Press "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

Check 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.

Replace 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 assembly (3) Replace it with another tape and re-check

Replace the faulty tape with working tape to see if the same fault will re-occur.
Standard: The function is normal
Normal: The tape is faulty
Abnormal: Check if the radio auto-research function works
(4) Check if the radio auto-research function works

Perform 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)
a. Check the continuity between terminals under each operating condition as shown in the table below.
Standard:Audio System -Audio System Inspection5-46

Audio System -Audio System Inspection5-477. Poor sound quality only when playing tape
(1) Replace it with another tape and re-check

Replace 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 for foreign object
(2) Check for foreign object

Check the radio assembly and the cassette player for foreign objects or defects.
Abnormal: Clean foreign objects
Normal: Clean the magnet head and check operation
(3) Magnet Head Cleaning
a. Raise the cassette door with your finger. Next, using a pencil or similar object, push in the guide.
b. Using a cleaning pen or cotton applicator soaked in cleaner,clean the magnet head surface,pinch rollers
and tape press wheel.
c. Check if the same fault reoccurs.
Normal: The magnet head is dirty
Abnormal: Check and replace radio assembly
8. Tape jammed, malfunction with tape speed or auto-reverse
(1) Check for foreign objects

Check the radio assembly and tape player for foreign objects and defects
Standard: No foreign objects or defects
Abnormal: Clean foreign objects
Normal: Replace it with another tape and re-check
(2) Replace it with another tape and re-check

Replace the faulty tape with working tape (less than 90min) to see if the same fault will re-occur.
Standard: The fault is cleared.
Normal: There is something wrong with the tape
Abnormal: Clean the head
(3) Clean the magnet head
a. Raise the cassette door with your finger. Next, using a pencil or similar object, push in the guide.
b. Using a cleaning pen or cotton applicator soaked in cleaner, clean the magnet head surface, pinch rollers
and capstans.
c. Check whether the same fault re-occurs.
Normal: The magnet head is dirty
Abnormal: Check and replace radio assembly

Tester connection Condition Standard Status
GND Nomal ON Normal: Replace the signal wire connecting magnet head unit and CD box
Abnormal: Check the radio assembly (+B, ACC, GND)
(3) Check the radio assembly (+B, ACC, GND)
a. Check the continuity between terminals under each operating condition as shown in the table below.
Standard: c. Check the voltage between terminals under each operating condition as shown in the table below.
Standard: Normal: Replace CD, DVD box
Abnormal: Check if the head unit side C socket voltage output is NORMAL
(2) Check if the head unit side C socket voltage output is NORMAL _
a. Turn the ignition switch to ACC
b. Check the continuity between the magnet head unit C socket terminals under each operating condition
as shown in the table below
Standard: c. Check the voltage between terminals under each operating condition as shown in the table below.
Standard: 9. The CD box can not eject after inserted
(1) Check if the CD box power supply is NORMAL
a. Turn the ignition switch to ACC
b. Check the continuity between the CD box terminals under each operating condition as shown in the
table below
Standard:Audio System -Audio System Inspection5-48Tester Connection Condition Standard Status
+B - GND Nomal 10~14V
ACC - GND Ignition switch ACC or ON 10~14VTester connection Condition Standard Status
GND Nomal ON
Tester Connection Condition Standard Status
+B - GND Nomal10 ~ 14V
ACC - GND Ignition switch ACC or ON10 ~ 14VTester connection Condition Standard Status
GND Nomal ON

b. 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
10. Power coming in, but CD player doesn't work.
(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
a. Check if the proper CD is inserted
b. Make 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
a. Check and insert a proper CD
b. Check if CD is installed in reverse order.
Standard: Not installed in reverse order
Abnormal: Install the disc correctly
Normal: Clean the disc
(4) Clean the CD

If the CD is dirty, use soft cloth to wipe the CD surface in the arrow direction.
Notice:
Do not use cleanser for normal radio or anti-static-electricity repellent to clean the CD.
Normal: Dirty CD
Abnormal: Replace it with another CD and recheck itAudio System -Audio System Inspection5-49Tester Connection Condition Standard Status
+B - GND Nomal 10~14V
ACC - GND Ignition switch ACC or ON 10~14V