volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 6123 > < Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 6121
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NOTE:  Resistance value is valid at approx. 20°C. At higher temperatures, the value will rise approx. 4 - 6 Ohms.

If specified value is not obtained:

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Replace faulty fuel injector.

Checking voltage supply

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Pull connectors (1) off connection (2) of all fuel injectors.

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Connect diode test lamp to connector of tested fuel injector terminal 1 and Ground (GND).

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Switch on starter and test voltage supply for fuel injector.

LED must light.

If LED does not light up:

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Switch ignition off.

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Check for breaks in wire between 2-way connector terminal 1 Fuel Pump (FP) relay (J17) (see wiring diagram).
Wire resistance: max. 1.5 Ohms

Checking Activation and Voltage Supply

Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 6123 > < Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 6121