volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Injection Quantity and Injector Leakage, Checking|Page 5591 > < Fuel Injection Quantity and Injector Leakage, Checking|Page 5589
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Fuel Injector: Testing and Inspection
Fuel Injectors, Checking

With Manufacturer's Scan Tool

Fuel injectors, checking

WARNING!

Fire hazard! Do not smoke, work near heaters or open flame, or have anything nearby that could ignite fuel. The fuel system is under
pressure. Before opening, cover connections with a rag, and open carefully to release pressure.

Special tools and equipment

-

VAG1551 or VAG1552 Scan Tool (ST) with VAG1551/3 adapter cable

-

VAG1598/22 test box

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Multimeter US1119 (Fluke 83 or equivalent)

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VAG1348/3A remote control with adapter cable VAG1348/32

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VAG1527B LED voltage tester

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VW1594 connector test kit

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VAG1602 measuring glass from calibration tester

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Wiring diagram

Checking conditions

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Engine Speed (RPM) Sensor OK.

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Fuel pump relay OK

-

Fuse 34 OK

 
 
Checking

-

Conduct output Diagnostic Test Mode (DTM) actuating fuel injectors.   See: Computers and Control Systems/Testing and Inspection/Scan Tool
Testing and Procedures/Output Diagnostic Test Mode (DTM) (Function 03)

If one or more fuel injectors do not click:

-

Check actuation of fuel injectors.

Fuel Injection Quantity and Injector Leakage, Checking|Page 5591 > < Fuel Injection Quantity and Injector Leakage, Checking|Page 5589