TTS Quattro Roadster L4-2.0L Turbo (CDMA) (2009)
Specified value: 1.4 - 2.6 ohms (at approx. 20° C)
If the specified value was not obtained:
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Replace the malfunctioning Fuel injector(s).
If the specified value was obtained:
Checking activation and wiring
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Connect a diode test lamp (12V) from Battery + to the injector harness connector terminal (1 for N30, 3 for N31, 5 for N32 or 7 for N33) of the
Fuel Injector to be tested.
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Operate the starter and test the activation of the Fuel Injector.
LED should flicker.
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Switch the ignition off.
If LED does not flicker:
If the manufacturers test box is being used, perform the following step.
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Install the test box.
If the manufacturers test box is not being used, perform the following step.
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Remove the Motronic Engine Control Module (ECM) ( J623).
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Using a multimeter, check the Fuel Injector electrical harness connector terminals to the Motronic Engine Control Module (ECM) (J623) electrical
harness connector T60 terminals for an open circuit.
Specified value: 1.5 ohms Max.
If the specification is not obtained:
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Check the wiring for an open, high resistance or short to battery or ground.
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring:
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Replace the Motronic Engine Control Module (ECM) (J623).
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Install the engine cover with air filter.
Final procedures
After the repair work, the following work steps must be performed in the following sequence: