volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 3607 > < Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 3605
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Fuel Injector: Testing and Inspection
Fuel Injectors, Checking

With Manufacturer's Scan Tool

Fuel Injectors, Checking

Special tools and equipment

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VAG1598/31 test box

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Multimeter (Fluke 83 or equivalent)

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VAG1527B voltage tester

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VW1594 adapter set

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Wiring diagram

Test requirements

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Fuses 28 and 32 OK

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Engine speed sensor OK (checking). Refer under "Powertrain Management/Computers and Control Systems/Engine Speed Sensor", See:
Computers and Control Systems/Engine Speed Sensor/Testing and Inspection 

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Battery voltage at least 11.5 V

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Fuel pump relay OK

Test procedure

WARNING!
Fuel system is under pressure! Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the
connection.

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Remove intake manifold upper section.

NOTE:  Seal the intake ports in the intake manifold lower section or in cylinder head with a clean cloth.

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Disconnect harness connectors from fuel injectors.

Checking resistance of fuel injectors

Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 3607 > < Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 3605