[ Pobierz całość w formacie PDF ]

using wiring diagram
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A/C system, On Board Diagnostic (OBD) Page 68 of 91
- Check vacuum unit for -N63-
- Replace N63
1)Coolant fan 2nd stage is controlled by Second Speed Coolant Fan Control (FC) Relay J101:
When Coolant Fan Control (FC) Thermal Switch F54 closes and when A/C Refrigerant High Pressure Switch F23 closes
2)-N63- deleted for m.y. 1997
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A/C system, On Board Diagnostic (OBD) Page 69 of 91
01-48
VAG1551 scan tool display Specified function Corrective action
Temperature Regulator Flap
- V68 moves from stop to stop (fresh air - Test wiring/connections between V68
Motor V68
blower running, temperature of air at outlets and -E87- for open circuit or wrong
changes) connection using wiring diagram
- Check for free operation of temperature
flap
- V68 electrical test page 01-115
- Replace -E87-
Note:
Wait until temperature flap
is in "heat" position before
pressing button
Central Air Flap Motor V70
- -V70- moves from stop to stop (fresh air - Test wiring/connections between -V70-
blower running, air flow switches from and -E87- for open circuit or wrong
footwell/defrost to instrument panel air connection using wiring diagram
outlets)
- Check for free operation of central flap
Notes:
- -V70- electrical test page 01-115
Wait until central flap is at
- Replace -E87-
"air distribution to footwell/
defroster flap" position
before pressing button
Close all instrument panel
air outlets.
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A/C system, On Board Diagnostic (OBD) Page 70 of 91
01-49
VAG1551 scan tool display Specified function Corrective action
Footwell/Defroster Flap Motor V85
- V85 moves from stop to stop - Test wiring/connections between V85 and -
(fresh air blower running, air flow E87- for open circuit or wrong connection
switches from footwell to defrost) using wiring diagram
- Check for free operation of
footwell/defroster flap
Note:
- V85 electrical test page 01-115
Wait until footwell/defroster flap is
- Replace -E87-
at "defrost" stop before pressing
button.
Air Flow Flap Motor V71 1)
- V71 moves from stop to stop - Test wiring/connections between V71 and -
(fresh air blower running, air flow E87- for open circuit or wrong connection
changes) using wiring diagram
- Check for free operation of air flow flap
- V71 electrical test page 01-115
- Replace -E87-
1)
For m.y. 1997, -V71- operates the air flow flap as well as the fresh/recirculated air flap.
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A/C system, On Board Diagnostic (OBD) Page 71 of 91
01-50
VAG1551 scan tool Specified function Corrective action
display
Interior Temperature
- V42 (for temperature sensor in - Test wiring/connections between V42 and -E87- for
Sensor Fan V42
instrument panel) is switched on and off open circuit or short circuit to ground using wiring
every 5 seconds1) diagram
- Test voltage supply for V42 using wiring diagram
- Check intake slot and intake hose for
restriction page 87-145
- Replace -E87-
1)Confirm operation by blowing smoke over intake slot on center of instrument panel.
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A/C system, On Board Diagnostic (OBD) Page 72 of 91
01-51
VAG1551 scan tool display Specified function Corrective action
Segment test
- All segments of A/C control head - - Replace bulbs page 87-126
E87- are switched on and off every 3
seconds
- Replace -E87-
Outside Air Temperature
- Temperature display in Auto Check - Test wiring/connections between -E87- and
Display G106 in Auto Check
System1) begins counting up at 3 G106 for open circuit or short circuit using wiring
System1)
second intervals diagram
- Test positive and ground connections to G106
for open circuit using wiring diagram
- Test Auto Check System1)
- Replace -E87-
1) If equipped.
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A/C system, On Board Diagnostic (OBD) Page 73 of 91
01-52
Basic setting (function 04)
- Connect Scan Tool VAG1551 or 1552, enter
address word 08 "A/C Heating Electronics" and
move forward in program until "select function
XX" appears in the display.
- Switch on printer by pressing the PRINT button
(indicator lamp in the button comes on).
- Check DTC memory ( page 01-18 ) and repair
all malfunctions which are displayed.
- Erase DTC memory page 01-55 .
- Check coding ( page 01-57 ) and re-code if
necessary.
Rapid data transfer HELP Indicated on display (function selection)
Select function XX
- Press buttons -0- and -4-.
Rapid data transfer Q Indicated on display
04 - Basic Setting [ Pobierz całość w formacie PDF ]

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