volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Removing and installing rotor plate > < Checking TCI-H ignition system
34 PICT, Keihin carburettor and ignition system
Servicing TIC-H ignition system
Checking DIS switch unit

(Engine code JB, HM, AJD)

Note:

In the event of starting difficulties or misfiring, pull plugs off DIS switch unit, join them together and start engine.

If this remedies the defect, check that the contact pins and sleeves of both plugs are in the correct position; They must not be damaged or pushed back. Otherwise renew the DIS switch unit.

  • ● Minimum engine oil temperature 60 °C
 
V25-1522
  • ‒ → Connect up ignition tester V.A.G 1367 with clip-on trigger V.A.G 1367/8 or ignition tester V.A.G 1767 with ignition off.
  • ‒ Pull on hand brake.
Attention!
For safety reasons, there must not be anyone in front of the vehicle whilst carrying out test procedure.
  • ‒ Start engine and briefly increase engine speed (burst of throttle).
  • ‒ Actuate foot brake.
  • ‒ Allow engine to idle. Read off ignition timing point.
  • ‒ Engage 4th gear and slowly allow the clutch to bite; engage driving range on vehicle with automatic gearbox.
    Ignition timing point must be advanced as the engine speed drops below 940 rpm.
  • ‒ If this not the case, renew DIS switch unit.

Removing and installing rotor plate > < Checking TCI-H ignition system