Passat Syncro Sedan V6-2771cc 2.8L DOHC (AHA) (1999)
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Check wire between 5-pin connector terminal 1 and relay panel for open circuit using appropriate wiring diagram.
Specified value: max. 1.5 Ohms
Checking actuation
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Remove fuse 28 for fuel pump or disconnect harness connectors from all fuel injectors.
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Connect VAG1527B voltage tester to terminals 2 and 3 of 5-pin connector using adapter cables from VW1594 connector test kit.
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Operate starter and check ignition signal from engine control module.
LED must flash.
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Repeat check between terminals 2 and 4 and terminals 2 and 5.
If the LED does not flash:
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Connect VAG1598/22 test box to Motronic ECM harness connector.
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Check wiring between ECM/test box and 5-pin connector for open circuit using appropriate wiring diagram.
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Connector terminal 3 to ECM/test box socket 71
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Connector terminal 4 to ECM/test box socket 78
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Connector terminal 5 to ECM/test box socket 70
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Check wires for short circuits between one another.
Specified value: max. Infinity Ohms
If wiring is OK and voltage was present between contacts 1 and 2:
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Replace Motronic ECM -J220-. See: Computers and Control Systems/Engine Control Module/Service and Repair
If voltage supply and activation is OK:
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Replace ignition coils and power output stage. See: Service and Repair