Tools And Equipment

The DISplus/GT1 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 MS45 application should be used (#90 88 6 121 300). This will ensure the pin connectors and the harness will not be damaged.

When installing the Universal Adapter to the ECM, make sure the ignition is switched off.

Fig 1: Identifying Tools And Equipment

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Fig 2: Installing Universal Adapter To ECM

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NOTE: NOTE for MS45: Allow at least 3 minutes to elapse after the key was set to the "OFF" position before disconnecting the ECM/ TCM.
This will allow sufficient time to complete the DM TL test. Voltage may be present (up to 3 minutes) causing damage to the ECM/TCM if they are disconnected during this time period (arcing).

When Testing the Secondary Ignition System, use Special Tool (Secondary Voltage Test Cable) #90 88 6 127 050. This provides a clamping surface for the DISplus primary and secondary ignition adapter clamps. Refer to the HELP button for additional (on screen) connections.

CAUTION: Observe Safety Precautions, High Voltage is Present with the Engine Running

Fig 3: Identifying Special Tool 90 88 6 127 050

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Fig 4: Using Special Tool 90 88 6 127 050

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The Spark Plugs should be properly installed and torqued using the following Special Tools:

12 1 200 Torque Adapter
12 1 171 Spark Plug Socket

NOTE: NEVER USE AIR TOOLS FOR REMOVAL OR INSTALLATION!

Fig 5: Identifying Spark Plug Removal Tool

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Courtesy of BMW OF NORTH AMERICA, INC.