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Checking signal from power steering pressure switch > < Checking signal from brake light switch and brake pedal switch

Leon Mk1

Checking rpm signal
Checking rpm signal
  Note!
The engine rpm signal output is on contact 41 of engine control unit. Amongst other things the signal is necessary for the rev. counter in dash panel insert.
Special tools and workshop equipment required
t  Test box -V.A.G 1598/22-
t  Adapter set -V.A.G 1594-
t  Hand multimeter -V.A.G 1526- or multimeter -V.A.G 1715-
t  Current flow diagram
Test conditions
l  No faults must be stored in fault memory → Vehicle diagnosis, testing and information system VAS 5051, interrogating and erasing fault memory.
Test sequence
–  Remove wiper arms and cowl panel: → Electrical system; Rep. Gr.92
   
–  Connect test box -V.A.G 1598/22- to control unit wiring harness.
–  Check wiring from test box contact 41 to dash panel insert for open circuit using current flow diagram: → Current flow diagrams, Electrical fault finding and Fitting locations
  N24-0709

Checking signal from power steering pressure switch > < Checking signal from brake light switch and brake pedal switch