11 00 039 Checking compression of all cylinders (N16 and N18)

Special tools required: 

• 2 410 242
• 11 0 222

• Read out fault memory of DME engine management module
• Check stored faults
• Rectify faults
• Delete fault memory

Attention! 

High tension - mortal danger!

Disconnect power supply to ignition coils.

Necessary preliminary tasks: 

• Remove SPARK PLUGS .

Unscrew tip (1) from special tool 11 0 222.

Attention! 

Then check the Schrader valve that is now visible for secure seating.

Fig 1: Identifying Special Tool (11 0 222) And (11 8 731)

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Prepare special tool 11 0 222 in conjunction with 11 8 732 and 11 8 731.

Fig 2: Preparing Special Tools

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Screw special tool 11 0 222 onto special tool 11 8 731 to 10 Nm.

Fig 3: Screwing Special Tool (11 0 222) Into Special Tool (11 8 731)

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Connect special tool 2 410 242 to special tool 11 0 222 with the bayonet fitting.

Screw in the 100-bar sensor (1) on the special tool 2 410 242 hand-tight.

Connect 100-Bar sensor (1) with the Integrated Measurement Interface Box.

Fig 4: Identifying Special Tool (2 410 242) And 100-Bar Sensor

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Screw special tool 11 0 222 by hand into the spark plug thread.

1. Connect vehicle with diagnosis tester.
2. Select service function "Check compression of all cylinders".
3. Observe diagnosis instructions.

Illustration: N74.

Fig 5: Screwing Special Tool (11 0 222) Into Spark Plug Thread

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Disconnect connector A46*6B.

Fig 6: Locating Connectors

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Remove relay K21 from slot.

Fig 7: Locating Relays

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Compression check, electronic. 

Follow diagnosis instruction.

Fig 8: Identifying IMIB 2 - Order Number (81 38 2 295 937)

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Assemble engine.

Delete the fault memory.