audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 5864 > < With Manufacturer's Scan Tool|Page 5862
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Fuel Injector: Testing and Inspection
With Generic Scan Tool

Checking Fuel Injectors For Injection Quantity And Proper Seal

Recommended special tools and equipment

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VAG1348/3A remote control with VAG1348/3-2 adapter cable

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V.A.G 1602 tester for quantity of injected fuel

Without illustration:

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VAG1594A connector test kit

Test requirement

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Fuel pressure must be OK, fuel pressure regulator and retaining pressure, checking. See: Fuel Pressure Regulator/Testing and Inspection

WARNING:  Fuel system is under pressure. Before opening system, place rags around the connection point. Then release pressure by carefully
loosening connection.

Test sequence

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Disconnect fuel injector connectors.

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Remove mounting bolts from fuel distributor.

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Then remove the fuel distributor completely.

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Disconnect vacuum hose from fuel pressure regulator.

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Lift fuel rail with fuel injectors off intake manifold and support it.

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Connect test box to control module wiring harness, connect test box for wiring test. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring
Test

NOTE:  The only purpose of this step is to allow the Fuel Pump (FP) to run with the engine at standstill.

With Manufacturer's Scan Tool|Page 5864 > < With Manufacturer's Scan Tool|Page 5862