Volkswagen > A3 Platform > 1993 – 2002 2.0 Liter 4-Cyl. 2V Fuel Injection & Ignition, Engine Code(s): ABA m.y. 1996-1999 28 – Ignition/Glow plug system Ignition coil power output stage, checking Special tools, testers and auxiliary items VAG 1598/18 test box Multimeter (Fluke 83 or equivalent) VAG 1527B voltage tester Connector test kit VW 1594 Wiring diagram Checking voltage supply Disconnect 3-pin connector from ignition coil. Connect multimeter using test leads from VW 1594 to measure voltage at terminals 1 and 3 of connector. Turn on ignition. Measure voltage between terminals 1 and 3. Specification: 9-14.5 volts Turn off ignition. If the specification is not attained: Check wire between 3-pin connector contact 1 and Ground for open circuit according to wiring diagram. Wire resistance: Max. 1.5 ohms ( ) Check wire between 3-pin connector contact 3 and relay plate for open circuit according to wiring diagram. Resistance: max. 1.5 ohms ( ) If no wiring malfunction is detected and voltage was present between terminals 1 and 3: Replace ignition coil -N152- => Page 28-2, item 7. If no wiring malfunction is detected and no voltage was present between terminals 1 and 3: Replace Engine Control Module (ECM) -J220- => Page 24-9, item 12. Read the readiness code => page 01-32. If DTC memory has been erased, verify repair via appropriate display group => Page 01-34, Readiness code, creating. Checking activation Disconnect the engine harness center connector => Page 24-2, item 11. Connect VAG 1527B voltage tester with test leads from VW 1594 and adapters VW 1594/15 to terminals 2 and 3 of the connector. Operate starter and check ignition signal from ECM. LED must flicker.

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