air condition GEELY MK 2008 Owner's Manual

c.Check voltage between terminals
Standard:Rotating wheel 7.5-9V
Below 0.5V0Voltage changes alternativelyCombination Instrument System -Malfunction Symptom Table and Troubleshooting5-11 Result and measures:
Normal, replace combination instrument assy.
Abnormal, repair or replace wiring harness or connector
2. Speedometer fails
Check
(1) Check combination instrument assy.
a. Remove combination instrument assy. , keep connection of connector.
b. Check on state
Check connection between terminals
Standard:Tester connection Conditions Standard condition
C 17- ground Turn ignition switch to ON position 7. 5-9V
Result and measures:
Abnormal, go to (2) Check combination instrument assy. speed input signal
Normal, go to (3) Check combination instrument assy.
(2) Check combination instrument assy. speed input signal
a. Check voltage
Prop up two front wheels
Push transmission lever to neutral position
Turn on ignition switch
turn front wheel slowly, measure the voltage between terminal C15 and terminal C16
Standard voltage is shown in the figure below:
Result and measures:
Normal, replace combination instrument assy.
Abnormal, check speed sensorTester connection Condition Standard condition
C 15-ground Normal ON

Check voltage between terminals
Standard:7.5-9V
0Voltage changes alternatively5-12 b. Check speed sensor
Check on state
Check connection between terminals
Standard:Tester connection Conditions Standard condition
3- ground Turn ignition switch to ON position 7. 5-9VTester connection Condition Standard condition
2- ground Normal ON Result and measures:
Abnormal, repair or replace wiring harness or connector
Normal, check speed sensor output signal
c. Check speed sensor output signal
Check voltage
Prop up two front wheels
Push transmission lever to neutral position
Turn on ignition switch
Turn front wheel slowly, measure the voltage between terminal 1 and terminal 2
Standard voltage is shown in the figure below:
Rotating wheel Below 0.5V
Result and measures:
Normal, repair or replace wiring harness or connector
Abnormal, replace speed sensor
(3) Check combination instrument assy.
a. Remove combination instrument assy. , disconnect connector.
b. Check on status
Check connection between terminals
Standard:
Tester connection Condition Standard condition
C 13- ground Normal ONCombination Instrument System -Malfunction Symptom Table and Troubleshooting

5-13 c. Check voltage between terminals
Standard:Tester connectionConditions Standard condition
C 12- ground Turn ignition switch to ON position 7. 5-9V
Result and measures:
Abnormal, repair or replace wiring harness or connector
Normal, replace combination instrument assy.
3. Tachometer fails
Checkout procedure
(1) Check combination instrument assy. rotating speed input
signal
a. Remove combination instrument assy. , keep connection of
connector.
b. Connect oscillograph to terminal C23 and ground.
c. Start up engine
d. Check signal waveform
Standard:
Display correct waveform
Result and measures:
Normal, check and replace combination instrument assy.
Abnormal, check engine ECU rotating speed output signal
(2) Check engine ECU rotating speed output signal
a. Remove engine ECU ware, keep connection of connector.
b. Connect oscillograph to terminal ECU 8# pin and ground.
c. Start up engine
d. Check signal waveform
Standard:
Display correct waveform
Result and measures:
Normal, repair or replace wiring harness or connector
Abnormal, check revolution speed transducer and engine
control system
4. Water thermometer fails
Circuit diagramCombination Instrument System -Malfunction Symptom Table and Troubleshooting combination instrument assy
combination instrument assy engine ECU
coolant Temperature SensorEngine Speed Signal
coolant Temperature Signal

Tester connection Conditions Standard state
C(60°C)164.5±5 ohm
C 24- ground 1/2C(90°C)56±3 ohm
H(115°C)28.7±2 ohmConditions Standard state
C(60°C)164.5±5 ohm
1/2C(90°C)56±3 ohm
H(115°C)28.7±2 ohm5-14 (1) Use diagnostic instrument to read engine water temperature value
a. Connect diagnostic instrument to diagnostic interface
b. Turn on ignition switch
c. Read water temperature value displayed on diagnostic instrument
Standard: the same as actual engine cooling water temperature
Result and measures:
Normal, water thermometer does not fail
Abnormal, check combination instrument assy.
(2) Check combination instrument assy.
a. Check resistance
Remove combination instrument assy. , disconnect connector.
Check connection between terminals
Standard:
Result and measures:
Normal, replace combination instrument assy.
Abnormal, check water temperature sensor
b. Check water temperature sensor
Remove water temperature sensor and put it in thermostat.
Adjust temperature of thermostat and measure resistance value of water temperature sensor
Standard:
Result and measures:
Normal, repair or replace wiring harness and connector
Abnormal, replace water temperature sensor
5. Fuel gauge fails
Circuit diagramCombination Instrument System -Malfunction Symptom Table and Troubleshooting combination instrument assy
Fuel Sensor
Fuel Signal

Tester connectionConditions Standard state
E 110±6 ohm
C 21- ground 1/232.5±3 ohm
F 3±2 ohmConditions Standard state5-15 (1) Check combination instrument assy.
a. Check resistance
Remove combination instrument assy. , disconnect connector.
Check connection between terminals
Standard:
Result and measures:
Normal, replace combination instrument assy.
Abnormal, check fuel sensor
b. Check fuel sensor
Remove fuel sensor.
Adjust the height of fuel sensor and measure its resistance value.
Standard:
Result and measures:
Normal, repair or replace wiring harness and connector
Abnormal, replace fuel sensor
6. Odometer fails
Firstly check according to speedometer problem, if speedometer is normal, odometer fails, replace combina-
tion instrument assy.
7. Illuminating lamp fails
Symptom
All illuminating lamps do not illuminate
Only one illuminating lamp does not illuminateSuspected area
1. Brightness control switch
2. Wiring harness or connector
3. Combination instrument
1. Combination instrument assy.Combination Instrument System -Malfunction Symptom Table and Troubleshooting C(60°C)164.5±5 ohm
1/2C(90°C)56±3 ohm
H(115°C)28.7±2 ohm

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