S4 Quattro Sedan V8-4.2L (BHF) (2005)
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Remove rear engine cover -arrows-.
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Remove front engine cover (arrows -1- and -2-).
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Disconnect connector strips -1- and -5- at fuel injectors.
NOTE: Disregard the other items.
Checking internal resistance
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Connect multimeter at valve for resistance measurement.
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Specified value: 12 to 13 Ohms (at room temperature)