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Audi Workshop Service and Repair Manuals

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Checking accelerator pedal position sender G79 > < Checking brake light switch F and brake pedal switch F47

A4 Mk1

Checking clutch pedal switchF36
Checking clutch pedal switch -F36-
This signal is used to prevent engine speed fluctuations and load change jolts when the clutch is disengaged. The signal is also required for the cruise control system.
–  Switch on ignition.
–  Read measured value block, Display group 06, engine not running
–  Check display in display zone 2.
t  Specification: 0 0 0
–  Depress the clutch pedal.
t 
t  Specification: 1 0 0. The display should change from 0 to 1.
–  Allow clutch pedal to return slowly to its normal position.
t  Specification: 0 0 0. The display should change from 1 to 0.
If specification is not obtained:
–  Connect test adapter -V.A.G 1598/30- or -V.A.G 1598/31- to wiring harness for engine control unit. Do not connect engine control unit → Chapter.
Test the following wiring connections for open circuits and short to positive or negative.
   
Switch on clutch pedal, contact-V.A.G 1598/30-, socket-V.A.G 1598/31-, socket
→ Current flow diagrams, Electrical fault finding and Fitting locations4/2332

Resistance in wiring: max. 1.5 Ω
–  Rectify open circuit or short circuit in wiring as necessary → Current flow diagrams, Electrical fault finding and Fitting locations.
   

Checking accelerator pedal position sender G79 > < Checking brake light switch F and brake pedal switch F47