Operation CHARM: Car repair manuals for everyone.
Home >> Volkswagen >> 2004 >> Passat Sedan 4Motion (3B3) W8-4.0L (BDP) >> Repair and Diagnosis >> Power and Ground Distribution >> Service and Repair
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Power and Ground Distribution: Service and Repair



Housing For Control Modules In Plenum, Removing And Installing

Removing
- Disconnect battery.
- 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
Install 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).
pro multis · About Operation CHARM