volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 4157 > < Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 4155
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Test sequence

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Pull connectors -1- off connection -2- of all fuel injectors.

Resistance values of fuel injectors, checking

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Test resistance of fuel injectors between terminals.
Specified value: 13.5 to 15.5 Ohms

If specified value is not obtained:

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Replace malfunctioning fuel injector, item 7 .

Note the following when installing the fuel injectors:

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Replace O-rings on all fuel injectors and wet them slightly with clean motor oil.

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Insert fuel injectors into fuel rail perpendicular and in the right position, and secure them with retaining clips.

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Position fuel rail on intake manifold using secured fuel injectors and apply uniform pressure to press it in.

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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.

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Generate readiness code.  See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes

Checking voltage supply

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

Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 4157 > < Fuel Injectors For Injection Quantity and Proper Seal, Checking|Page 4155