Tools and Equipment

The DIS/MoDIC as well as a reputable hand held multimeter can be used when testing inputs/components.

It is best to make the checks at the ECM connection, this method includes testing the wiring harness.

The correct Universal Adapter for the MS S54 application should be used (#90 88 6 121 300). This will ensure the pin connectors and the harness will not be damaged.

Fig 1: Checking ECM Connectors With Breakout Box

Courtesy of BMW OF NORTH AMERICA, INC.

When installing the Universal Adapter to the ECM (located in the Electronics Box in the engine compartment), make sure the ignition is switched off.

The Slack Tube Manometer Test Tool (#99 00 0 001 410) should be used to troubleshoot crankcase ventilation valves.

Fig 2: Slack Tube Manometer Test Tool

Courtesy of BMW OF NORTH AMERICA, INC.