Checking compression of all cylinders (B48 and B46 engines) (Cooper Clubman S and JCW)

Special tools required: 

• 11 0 222
• 11 8 732
• 11 8 731
• 2 410 242

Preliminary work needed: 

• Reading out the fault memory
• Rectify faults
• Delete fault memory
• Remove SPARK PLUGS

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

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

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

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Disconnect plug connection A46*6B on the DME control unit.

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

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.

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Illustration: N74.

Manually screw special tool 11 0 222 into the spark plug thread.

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Follow diagnosis instruction.

Diagnosis path:  Drive -> Motor Electronics -> compression test.

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Required follow-up work; 

• Install SPARK PLUGS
• Connect all of the connectors to the injectors
• Delete fault memory