Air conditioner--Compressor assembly
Compressor assembly
Change
1. Disassemble radiator cover.
2. Reclaim HFC-134a(R134a)
3. Disconnect refrigerant No.1 low pressure hose.
(a) Disassemble the bolt from compressor and electromag-
netic clutch assembly and disconnect refrigerant low pres-
sure hose.
(b) Disassemble O-shape loop from refrigerant low pressure
hose.
Note: after disassembling the pipeline, it is necessary
to cover the joint to prevent humidity or dust from
entering in system.
4. Disconnect refrigerant No.1 high pressure hose.
(a) Disassemble the bolt from compressor and electromag-
netic clutch assembly and disconnect refrigerant high pres-
sure hose.
(b) Disassemble O-shape loop from refrigerant high pressure
hose.
Note: after disassembling the pipeline, it is necessary
to cover the joint to prevent humidity or dust from
entering in system.
5. Disassemble right bottom defending cover of engine.
6. Disassemble driving belt.
7. Disassemble compressor and electromagnetic
clutch.
(a) Disconnect the joint.
(b) Disassemble three screws and electromagnetic clutch.
8. Check the Refrigerant oil.
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When upgrading compressor assembly, it is necessary to reclaim the refrigerant in system at first.
Refrigerant oil quantity added by new compressor should be calculated by following formula.
Refrigerant oil standard quantity of new compressor:
(Inner Refrigerant oil quantity of new compressor:60 ± 10ml)-(Inner discharged Refrigerant oil quantity
of old compressor)=(Refrigerant oil quantity consumed by the system when changing)
Note:
zWhen checking the Refrigerant oil quantity, please refer to the notes on page 206.
zFor there is some Refrigerant oil in automobile pipeline, if some Refrigerant oil is not discharged
when assembling new compressor, this will incur the Refrigerant oil in system is too much to make
the system heat exchange become bad and air conditioning become invalid.
Supplemental restraint system--Repair
Repair
a. In using process, if happening any malfunction of power supply, it shows the voltage of power supply
is less than 9V or higher than 18V, or the battery is damaged, at this time, it only needs to charge or
change the battery.
b. Use special malfunction diagnostic tool to test.
Malfunction codes approved by safety airbag controller (KD4.1)
Number Malfunction specification Remove
1Ignition circuit 1 (safety airbag at the side of driver), the resistance is too high or open circuit.OK
2
Ignition circuit 1 (safety airbag at the side of driver), the resistance is too low or short circuit.OK
3
Ignition circuit 1 (safety airbag at the side of driver), connects with the groundingOK
4
Ignition circuit 1 (safety airbag at the side of driver), connects with power supplyOK
5
Ignition circuit 2 (safety airbag at the side of passenger), the resistance is too high or open circuit.OK
6
Ignition circuit 2 (safety airbag at the side of passenger), the resistance is too low or short circuit.OK
7
Ignition circuit 2 (safety airbag at the side of passenger), connects with the groundingOK
8
Ignition circuit 2 (safety airbag at the side of passenger), connects with power supply.OK
9
Ignition circuit 3 (pre-tension safety belt at the side of driver), the resistance is too high or open circuit.OK
10
Ignition circuit 3 (pre-tension safety belt at the side of driver), the resistance is too low or short circuit.OK
11
Ignition circuit 3 (pre-tension safety belt at the side of driver), connects with the groundingOK
12
Ignition circuit 3 (pre-tension safety belt at the side of driver), connects with the power supplyOK
13
Ignition circuit 4 (pre-tension safety belt at the side of passenger), the resistance is too high or open circuit.OK
14 Ignition circuit 4 (pre-tension safety belt at the side of passenger), the resistance is too low or short circuit. OK
15
Ignition circuit 4 (pre-tension safety belt at the side of passenger), connects with the groundingOK
16
Ignition circuit 4 (pre-tension safety belt at the side of passenger), connects with power supplyOK
17
Voltage of power supply is too highOK
18
Voltage of power supply is too lowOK
19
Malfunction of indicating light connects with power supply or bulb is short circuit.OK
20 Malfunction of indicating light connects with the grounding or filament is open circuit. OK
21
Lack/wrong calculation rule parametersNo (change safety airbag
controller (KD4.1))
22Front impact has been recordedNo (change safety airbag
controller (KD4.1))
23
Communication malfunctionOK
24
Inner malfunctionNo (change safety airbag
controller (KD4.1))
25
Impact output (oil pump) pin connects with the groundingOK
26
Impact output (oil pump) pin short connects with power supplyOK
27
Impact output (central control door lock) pin connects with the groundingOK
28
Impact output (central control door lock) pin connects with power supplyOK
29
Pre-tension safety belt ignites independentlyOK, but most is five times
30
Pre-tension safety belt ignites six times independentlyNo (change safety airbag
controller (KD4.1))
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