volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Pressure Regulator > < Fuel Injectors, Checking
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Fuel Injector: Testing and Inspection
Voltage Supply, Checking

Checking Voltage Supply

CAUTION:  Avoid short circuits at the connector terminals, the control unit can be damaged.

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Remove all connectors from injectors and connect voltage tester US1115 on one connector (arrow)

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Operate starter
LED must flicker 

If NO
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See Electrical Testing - Ignition and Injection System, , test steps 1 and 5 or control unit defective

Fuel Pressure Regulator > < Fuel Injectors, Checking