volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Checking ignition transformer output stage > < Checking knock sensor and knock control
Motronic fuel injection and ignition system 08.95 ä
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).
  • ‒ Connect multimeter using aux. cables from V.A.G 1594 to measure resistance.
 
V28-0825
  • ‒ → Check ignition transformer primary resistance with hand multimeter V.A.G 1526 between terminals 1 and 15.
         Specification: 0.5...1.2 ω
  • ‒ Check ignition transformer secondary resistance with hand multimeter between terminals 4 and 15.
         Specification: 3...4 kω

If the specifications are not attained:

  • ‒ Replace ignition transformer (N152) =>Page 28-2 , item 7 .

Checking ignition transformer output stage > < Checking knock sensor and knock control