volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Checking ignition transformer output stage > < Checking knock sensor
Motronic MP 9.0 injection and ignition system
Motronic injection and ignition system
Checking ignition transformer

Special tools, testers and auxiliary items

  • ◆ Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
  • ◆ Adapter set V.A.G 1594

Test sequence

  • ‒ Pull connector and H.T, cable off ignition transformer (N152).
 
U28-0012
  • ‒ → Check primary resistance with hand multimeter V.A.G 1526 between terminals 1 and 15.
         Specification: 0.5...1.2 ω
  • ‒ Check secondary resistance with hand multimeter between terminals 4 and 15.
         Specification: 3....4 Kω

If the specifications are not attained.

  • ‒ Replace ignition transformer.

Checking ignition transformer output stage > < Checking knock sensor