Volkswagen Passat 1995 Official Factory Repair Manual page 903

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 38 and 3-pin
connector terminal 3, according to
wiring diagram.
Wire resistance: Max. 1.5
Checking activation
- Disconnect harness connector for
fuel injectors 1 and 4, and remove
fuse 18.
- Connect VAG 1527B voltage tester
to connector terminals 2 and 3 using
adapter cables from VW 1594 and
VW 1594/15 adapter.
- Operate starter and check ignition
signal from Motronic ECM.
LED must flicker
- Switch ignition off.
If LED does not flicker:
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