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Checking ignition transformer > < Test data, spark plugs

Leon Mk2

Checking Hall sender
Checking Hall sender
Special tools and workshop equipment required
t  Test box -V.A.G 1598/22-
t  Hand multimeter -V.A.G 1526- or multimeter -V.A.G 1715-
t  Adapter set -V.A.G 1594-
t  Current flow diagram
Check conditions
l  The battery voltage must be at least 11.5 V.
l  If the vehicle is equipped with an air conditioner, this must be switched off.
l  All electrical consumers, e.g. lights and rear window heating must be switched off.
l  Hall sender screwed on tight
Test sequence
   
–  Pull 3-pin connector off Hall sender -arrow-.
  N28-0176
–  Connect multimeter to measure voltage with adapter cables from -V.A.G 1594- to contacts 1 (positive) and 3 (earth) on the Hall sender connector.
–  Switch on ignition. Specification: min. 4.5 V
–  Switch off ignition.
If no voltage is present:
–  Remove wiper arms and cowl panel: → Electrical system; Rep. Gr.92
  N28-0131
–  Connect test box -V.A.G 1598/22- to control unit wiring harness.
  N24-0709
–  Check wiring between test box and 3-pin connector (connector to control unit) for open circuit using current flow diagram. Contact 1+socket 62 Contact 2+socket 60 Contact 3+socket 54 Wire resistance: max. 1.5 Ω
–  Additionally check wires for short to one another. Specification: ∞Ω
If no wiring fault is detected and voltage was present between contacts 1+3:
–  Renew Hall sender -G40- → Item.
If no wiring fault is detected and no voltage was present between contacts 1+3:
–  Replace engine control unit → Chapter.
  A24-0096

Checking ignition transformer > < Test data, spark plugs