Astra L4-1.8L (2009)
13. Remove the engine venting pipe (1).
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Remove the wiring trough (2) from cylinder head cover.
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Disconnect the 2 quick-release fittings.
14. Remove the engine control module. Refer to Engine Control Module Replacement (See: Powertrain Management/Computers and Control
Systems/Engine Control Module/Service and Repair).
15. Remove the engine management wiring harness.
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Disconnect the 7 wiring harness plugs.
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Air mass flow meter
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Throttle valve module
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Valve, intake camshaft adjustment
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Four injector valves
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Remove the 2 wiring harness brackets.
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Put the wiring harness to side.