Q7 Quattro V8-4.2L (BAR) (2008)
Engine Control Module: Service and Repair
Engine Control Module
Engine Control Module
Special tools, testers and auxiliary items required
‹› Heat Gun 220 V/50 Hz (VAS 1978/14) with nozzle attachment from Wiring Harness Repair kit (VAS 1978A)
‹› Locking Pliers (commercially available)
‹› The Engine Control Module (ECM) - 1 - is bolted to a protective housing - 5 -. To make removing the shear bolts - 4 - for the retaining tabs - 2 -
more difficult, the threads are coated with locking compound.
‹› To disconnect the connectors from the ECM (for example to connect the test box or to replace the ECM), the protective housing must be removed.
Removing
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If the engine control module is replaced, in "Guided Fault Finding" select "Replace Engine Control Module" to (VAS 5051B).
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Turn the ignition and remove the ignition key.
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Remove front rubber seal on plenum chamber.
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Unclip the right plenum chamber cover and lift it up slightly.
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Grasp under plenum chamber cover and unclip ECM - 1 - from bracket.