Passat L4-1.8L Turbo (AWM) (2004)
Engine Control Module: Service and Repair
With Manufacturer's Scan Tool
Housing For Engine Control Module In Plenum
Housing For Control Modules In Plenum, Removing And Installing
CAUTION!
Before beginning repairs on the electrical system :
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Obtain the anti-theft radio security code.
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Switch the ignition off.
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Disconnect the battery Ground (GND) strap.
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After reconnecting battery, re-code and check operation of anti-theft radio.
Removing
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Remove cap in windshield cowl panel under the left wiper arm (move wiper arm if necessary).
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Remove screw for housing cover underneath cowl panel as illustrated.
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Remove remaining screws -arrows- and take off housing cover.
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Remove Engine Control Module (ECM). (If necessary, remove eight position auxiliary relay panel and fuse panel).
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Disconnect all electrical connectors at connector station.
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Slide rubber grommet and wiring harness for engine controls up and out of slot in housing.
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Remove nuts -A-, 4 Nm (35 in lb).
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Push housing to rear (into plenum) to disengage from retainer bracket -B- and remove housing.
Installing
Installation is in reverse order of removal.
Installation Notes: