TT L4-1.8L Turbo (BEA) (2004)
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Connect one terminal of fuel injector to engine Ground (GND) using an adapter cable and an alligator clip from VAG1594A connector test kit.
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Connect second terminal of fuel injector to B+ using VAG1348/3A remote control, VAG1348/3-2 adapter cable and assisting cable.
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Bridge terminals 1 and 65 at test box using adapter cables from VAG1594A connector test kit (this step supplies Ground (GND) to one side of
relay coil for Fuel Pump (FP) relay).
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Switch ignition on.
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Fuel Pump (FP) must run.
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Activate VAG1348/3A remote control for 30 seconds.
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Perform measurement on all fuel injectors.
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After all four fuel injectors have been activated, place measuring glasses on an even surface.
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Specified value for each fuel injector: 179 ± 14 ml
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If measured value of one or more fuel injectors is outside of specified range, switch Fuel Pump (FP) off (switch ignition off) and replace faulty
fuel injector.
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If measured value of all fuel injectors is outside of the specified range, check fuel pressure. See: Fuel Pressure Regulator/Testing and Inspection
NOTE: Also check spray pattern when checking injection quantity. Spray pattern must be the same for all injectors
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Re-install fuel injectors together with fuel rail.