volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Injection Quantity and Injector Leakage, Checking|Page 5411 > < Fuel Injection Quantity and Injector Leakage, Checking|Page 5409
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Connect diode test lamp to the connector terminals of the fuel injector to be checked.

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Operate starter and test activation of fuel injector.
LED should flicker.

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Switch ignition off.

If LED does not flicker:

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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

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Check wires between test box and 2-pin connector for open circuit according to wiring diagram.
Wire resistance: max: 1.5 Ohms

Vehicles with engine code AHA

Vehicles with engine code ATQ

Fuel Injection Quantity and Injector Leakage, Checking|Page 5411 > < Fuel Injection Quantity and Injector Leakage, Checking|Page 5409