Section 4 Front Fog Lamp ReplacementI. Removal1. Remove front bumper. (see bumper replacement)
2. Remove electrical connector.
3. Remove fixed bolt (as shown in the figure).
4. Remove front foglight assembly.II. Installation1. Install front foglight assembly.
2. Mount fixed bolt.
3. Mount electrical connector.
4. Mount front bumper.
5. Adjust vehicle state.
6. Adjust front foglight beam.III. Replacement of front head light bulb Remove dust shield by rotating anticlockwise
Pull out bulb plug
Press and loosen steel wire clip
Pull out lamp holder, take off bulb
Replace bulbLight System -Front Fog Lamp Replacement5-351-Turn light dust shield
2-Low beam dust shield
3-High beam, front position lamp dust shieldIII. Replacement of front foglight bulb1. Press and rotate anticlockwise, take off dust hood
2. Take out bulb
3. Replace bulbIV. Adjustment of front foglight beam1. Adjust tire pressure in standard value
2. Start up engine
3. Turn on foglight switch
4. Adjust foglight beam turn screw to adjust foglight beam in the vertical direction.
Description:
Turn screwdriver anticlockwise to make beam upward, or turn screwdriver clockwise to make it downward.
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
Item
Temperature regulation method
CompressorNominal refrigerating capacity / w
Displacement / (ml /r)
Model
Power consumed by magnetic clutch /W
Lubricating oil / ml
BlowerMaximum air quantity / (m3/h)
Air regulation
Motor power / W
Dimension /mm
Heat exchange quantity / W
Fan motor current / A
Fan motor revolution / (r/min)
Dimension /mm
Refrigerating capacity /W
Thermostatic expansion valve Condenser
Evaporator
Driving belt
Refrigerant filling amount/gChapter 7 Air Conditioning SystemSection 1 General InformationOverview:Air-conditioning system consists of refrigeration and heating parts. Refrigerating system mainly consists of
compressor, condenser and evaporator etc, it adsorbs heat in the air through circulation of refrigerant, so as to
reduce air temperature in car body and eliminate water vapour in air, to achieve the purpose of temperature drop
and dehumidification. Heating system mainly consists of heat exchanger and heater unit. It utilizes heat of engine
cooling water to heat air via heat exchanger, so as to achieve the purpose of heating. Regulation and control of
temperature, humidity and flow rate of air in car body is realized via heating and refrigeration systems separately
or jointly.
For parameters of refrigerating system, see the table:
Parameter
Control mixing of cool and warm air
4200
143 131
SEBX13 FM10S13
43
300001202/150ml cm3 420
Manual 4 speed
200
16 x 350 x 630
10000
8
2200
225 x 250 x 58
4000
Internal balance type 1. 5 tons of refrigeration
4PK820
440±20g 420±10g+20
05-72Air Conditioning System -
General Information
5-73Precautions:1. Don't operate refrigerant in confined space or near open fire.
2. Always wear eyeglass.
3. Be careful don't let liquid refrigerant contact your eyes and skin,
if liquid refrigerant contacts your eye or skin.
(a) Please wash with fresh water.
Warning:
Don't knead your eyes or scrub your skin
(b) Apply soft petroleum ointment on your skin.
(c) See doctor or go to hospital immediately for specialized
treatment.
4. Don't heat container or put it near open fire.
5. Be careful not to fall off, object should not touch container.
6. If there is no sufficient refrigerant in refrigerating system, don't
operate the compressor.
If there is no sufficient refrigerant in the system, insufficient oil
lubrication might cause burning out of compressor. Be careful to
avoid occurrence of such things.
7. When compressor runs, don't turn on pressure gauge high-pressure
valve.
If high-pressure valve is turned on, refrigerant will flow in reverse
direction, and cause bursting of refrigerant tank, so only low
pressure valve may be turned on or off.
8. Be careful to avoid excess refrigerant
Excess refrigerant will result in poor refrigerating capacity, worse
fuel economical efficiency, engine overheat etc problems.Symptom
Blower does not workSymptom table Use the following table to find out the cause of fault, number indicates probable priority of problem, check each
part according to priority, replace components if required.
Suspected Area
1.Blower fuse
2.Centralized controller fuse
3. Blower relay
4. Integrated control panel assembly (blower switch)
5. Blower adjustment resistor
6. Blower
7. Wiring harness.Air Conditioning System -General Information
Air Conditioning System -General Information5-74Symptom
No air temperature control
Compressor does not work
Insufficient refrigeration
No engine idle speed when air conditioning
switch is ON (switch on)
No air input control
No mode control
Condenser fan does not workSuspected Area
1. Engine coolant quantity
2. Air conditioning control mechanism assembly.
1. Refrigerant quantity
2. Compressor fuse
3. Centralized controller fuse
4. Magnetic clutch relay
5. Pressure switch
6. Magnetic clutch assembly
7. Air conditioning compressor assembly
8. Integrated control panel assembly (air conditioner switch)
9. Air conditioner thermistor
10. Engine ECU
11. Wiring harness
1. Refrigerant quantity
2. Refrigerant pressure
3. Driving belt
4. Air conditioner thermistor
5. Integrated control panel assembly (air conditioner switch)
6. Magnetic clutch assembly
7. Air conditioning compressor assembly
8. Condenser
9. Accumulator-drier
10. Expansion valve
11. Evaporator
12. Refrigerant line
13. Pressure switch
14. Air conditioner control mechanism assembly
15. Wiring harness
1. Idle speed control system
2. Wiring harness
3. ECM
1.Air conditioner control mechanism assembly
1.Air conditioner control mechanism assembly
1. MAIN fuse
2. Condenser fan fuse
3. Condenser fan relay
4. Condenser fan motor
5. Wiring harness
Section 2 RefrigerantRefrigerant inspection1. Check refrigerant quantity
(a) Observe sight glass on refrigerating liquid pipe.
Test condition:
Engine speed: 1500 rpm
Blower speed control switch: HI "high "
Air conditioning switch: switch on
Temperature setting: maximum refrigeration
Refrigeration runs for 5 minutes
Open door
*: If refrigerating capacity is sufficient, environmental temperature is higher than normal condition, bubble
in sight glass may be deemed as normal.Symptom Refrigerant quantity Correct treatment2. Use manifold meter to check refrigerant pressure
( a ) This method is to utilize installed instrument to determine
where the fault is. Use manifold pressure meter reading to evaluate
fault condition.
Test condition:
Switch sets temperature of cyclical air inlet: 30-35°C
Engine speed: 1500 rpm
Blower speed control switch: high
Temperature control panel: refrigeration5-78With foam
Without foam
No temperature difference be-
tween input and output of
compressor
There is considerable tem-
perature difference between
compressor input and output
After air conditioner is turned
off, refrigerant should be
cleared immediately
After air conditioner is turned
off, refrigerant foams
immediately, then clears 1
2
3
4
5
6Insufficient *
Empty, insufficient or beyond
Empty or nearly full
Proper or beyond
Excess
Appropriate quantity1. Check gas leakage, repair if necessary
2. Add refrigerant until foam disappears
Refer to 3 and 4
1. Use detector to check gas leakage,
repair if necessary
2. Add refrigerant until foam disappears.
Refer to 5 and 6
1. Discharge refrigerant
2. Eliminate air, add appropriate quantity
of pure refrigerantSight glassAir Conditioning System -
Refrigerant
Air Conditioning System -Refrigerant5-811. Too high pressure on the
high and low pressure side
2. Even with decreasing engine
speed, no bubble can be seen
through view glass
3. Refrigeration is insufficient1. Excessive refrigerant,
not utilizing the efficacy
of refrigerant
2. Poor heat dissipation
of condenser1.Excessive refrigerant is
circulating
2. Insufficient refrigera-
tion in condenser, block
of condenser radiator or
fan fault1. Clean condenser
2. Check operation of fan
motor
3.Check the amount of
refrigerant, and fill in proper
amount of refrigerant1. Pressure on high, low pressure side
is too high
2. Touch thesuction hose, it is hot
3. Bubble appears in glass window,
cooling is not goodThere is air in
refrigerating
system1. There is air in re-
frigerating system
2. Vacuumizing is
not complete1. Check whether compressor
lubricating oil is dirty or insuffi-
cient
2. Pump off air and fill in appro-
priate quantity of refrigerantThere is air in the system. (7) There is air in the system (8) Expansion valve fault1. Pressure on high, low pressure
side is too high
2. There is frost or a great deal of
water drops on pipeline of low
pressure sideRefrigerant in low-pres-
sure line is too much
2. Expansion valve is opened
too largeCheck expansion
valveExpansion valve failureSymptom Possible cause Diagnosis Correct treatment
Symptom Possible cause Diagnosis Correct treatment Symptom Possible cause Diagnosis Correct treatment
Expansion valve fails1.
1 pressure is too high on low
pressure side, pressure on high-
pressure side is too low
2. Without cold airInside sealing of compressor
is poorCompressor fails, valve
leaks or is damaged.Repair or replace
compressorCompressor failure (9) Compressor poor compression faultDischarge and fill-up of refrigerantDischarge of refrigerant
In case of depletion, surrounding environment should always be
well-ventilated, do not approach open fire, otherwise toxic gas might
be generated.
(1) Firstly turn off meter valve high low manual valve, connect
pipeline according to the figure below, then adjust air conditioner to
maximum refrigeration operating condition, adjust engine speed to
1000 - 2000 r/min, run for 5 min. Circulate refrigerant and collect
residual oil in parts as far as possible into compressor.Symptom Possible cause Diagnosis Correct treatment (2) Loosen throttle, let engine restore to normal idle speed, turn off engine.
(3) Slowly open high voltage manual valve,cover a white towel on hose outlet,observe whether there is oil stain
on the towel, adjust flow of refrigerant.
(4) When high pressure gauge reading decreases to below 0. 35MPa, slowly open low pressure manual valve.
Close manual valve until reading of high low pressure gauge is zero.Fill-up of refrigerant (1) Use vacuum pump to vacuumize the system
During repair of refrigerating system, once refrigerating system is exposed to air or certain refrigerating
system part is to be replaced, automobile air conditioner must be vacuumized. So as to eliminate air and
water vapour in the system.
(2) Fill in R134 a
Standard: 420 ± 10 g (Dongfeng Painen System)
440 ± 20 g (Tianjing Sando System)Air Conditioning System -Refrigerant5-82Compressor
Gathering tank