Volkswagen Passat 1995 Official Factory Repair Manual page 904

Motronic ignition system, servicing
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- Connect VAG 1598/18 test box to
ECM wiring harness.
- Check wire for open circuit between
test box socket 8 and 3-pin
connector terminal 2, according to
wiring diagram.
Wire resistance: Max. 1.5
- Additionally check wires for short to
one another.
Specification:
If no wiring malfunction is detected and
voltage was present between terminals
1 and 3:
- Replace Motronic ECM J220
24-9 , item 16 .
If the voltage supply and activation is
OK:
- Re-connect 3-pin connector and
high-voltage cable to coil.
- Connect VAG 1527B voltage tester
to coil terminals 1 and 15.
WARNING!
During the test, DO NOT touch the
ignition coil terminals or the high-
voltage cables.
- Operate starter.
LED must flicker
- If necessary replace ignition coil
power output stage N157.
Page 25 of 25
28-22
(no continuity)
page
6/12/2004