S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
Engine Control Module: Service and Repair
Removing
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Switch ignition OFF.
CAUTION!:
BEFORE disconnecting the ECM harness connector, switch the ignition OFF and WAIT at least 30 seconds. Failure to do so may damage the
ECM.
Trim Panel Removal
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Remove cover from lower right A pillar.
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Pull back carpeting in right front foot well.
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Remove screws (arrows) from electronics box cover.
Panel Screw Locations
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Carefully pull upper and lower cover out of electronics box.
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Disconnect Motronic ECM from electronics box.
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Remove hose clamp from vacuum line and pull vacuum line out.
Installing
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Ensure that ignition is switched OFF.
CAUTION!:
DO NOT connect Motronic ECM with ignition switched ON.
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Connect Motronic ECM harness connector to Motronic ECM.
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Install Motronic ECM tightly in electronics box.
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Connect vacuum line to Motronic ECM.