clutch AUDI A4 1995 B5 / 1.G APB Engine Additional Signals Checking Workshop Manual
Page 15 of 37
24-191
Clutch Vacuum Vent Valve Switch -F36,
checking
Note:
This signal is used to avoid RPM over-oscillation
and load change impacts when changing gears
and is also used for the cruise control system.
Test sequence
- Connect vehicle diagnostic, testing and
information system VAS 5051 or VAG1551 scan
tool and select engine electronics control
module by entering address word "01" Page
01
-9 .
When doing this the ignition must be switched
on. Rapid data transfer
HELP
Select function XX
Indicated on display
- Press buttons -0- and -8- to select function "Read Measuring Value
Block" and confirm entry with -Q- button.
Read Measurin
g Value Block
Input displa
y group number XXX
Indicated on display
- Press buttons -0-, -6- and -6- to select "display group number 066" and
confirm entry with -Q- button.
Read Measuring Value Block 66
Indicated on display
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Page 16 of 37
1
2
3
4
- Observe clutch vacuum vent switch switch in display field 2.
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Page 17 of 37
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Display fields
1 2 3 4
Display Group 066: Signals to engine control module
Display xxx km/h
X X X X xxx km/h 0 0 0 0
Indicates Actual speed
Switch positions Specified speed Switch positions
Work
range
X0XX
X1XX
Specified value
X0XX
Clutch pedal not depressed
X1XX
Clutch pedal depressed
Note
Value:
X = insignificant
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Page 18 of 37
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If display does not appear as described:
Check switch
- Remove storage compartment on driver's
side.
Repair Manual, Body Interior, Repair Group
68
- Disconnect harness connector on clutch
switch.
- Connect hand-held multimeter for resistance
measurement between terminals 1 and 2.
Note:
The connector slots are marked on the back side
of the connector.
Specified value: approx.: 0
- Depress clutch pedal.
Specified value: (no continuity)
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Page 19 of 37
If specifications are not obtained:
- Replace clutch vacuum vent valve switch.
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