A4 Sedan L4-1.8L Turbo (AEB) (1997)
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If the LED light still does not light up:
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Check wiring for open or short circuits between fuse 28 and terminal 30 at relay position 6, using the applicable wiring diagram. Repair wiring as
necessary.
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Connect VAG 1527B LED voltage tester between Ground and one of the two terminals for fuse 29.
NOTE: This step lets the fuel pump run without the engine running. The closed throttle position switch must be closed during the test, or the selected
fuel injector will discharge fuel when it is actuated 5 times.
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Initiate output Diagnostic Test Mode (DTM) and advance to test of cylinder 1 fuel injector -N30-. Refer to "Oxygen Sensor Behind
Catalyst/Sensor and Sensor Control"
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LED test light must light up
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Fuel pump relay must be activated
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Fuel pump must run
If the LED test light does not light up:
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Repeat test at other terminal of fuse 29.
