Housing For Engine Control Module In Plenum

2003 Volkswagen Passat Sedan (3B3) V6-2.8L (ATQ)SECTION Housing For Engine Control Module In Plenum



Housing For Control Modules In Plenum, Removing And Installing


CAUTION!
Before beginning repairs on the electrical system :
- Obtain the anti-theft radio security code.
- Switch the ignition off.
- Disconnect the battery Ground (GND) strap.
- After reconnecting battery, re-code and check operation of anti-theft radio.


Removing

- Remove cap in windshield cowl panel under the left wiper arm (move wiper arm if necessary).







- Remove screw for housing cover underneath cowl panel as illustrated.
- Remove remaining screws -arrows- and take off housing cover.
- Remove Engine Control Module (ECM). (If necessary, remove eight position auxiliary relay panel and fuse panel).
- Disconnect all electrical connectors at connector station.
- Slide rubber grommet and wiring harness for engine controls up and out of slot in housing.
- Remove nuts -A-, 4 Nm (35 in lb).
- 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:







- Always replace gasket -C-. Do not allow gasket to block or interfere with opening in plenum for harnesses.
- When installing cover for housing, engage into tab and press firmly into place by hand first. Cover screws MUST be torqued to 4 Nm (35 in lb)
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.