11 00 039 Checking compression of all cylinders (N20, N26)

Special tools required :

11 0 222
11 8 732
11 8 731
0 490 615
0 496 107
13 6 052
11 4 310

IMPORTANT: High tension - mortal danger!
Interrupt power supply to ignition coils.

Necessary preliminary tasks :

Remove SPARK PLUGS

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

IMPORTANT: Then check the Schrader valve that is now visible for secure seating.
Prepare special tool 11 0 222 in conjunction with 11 8 732 and 11 8 731 .

Order number: 0 490 615/0 496 107.

Fig 1: Identifying Special Tools

G05501554

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Preparing Special Tools

G05501555

Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: Oil screw thread on special tool 11 8 731 .

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

G04789654

Courtesy of BMW OF NORTH AMERICA, INC.

Connect special tool 11 0 222 to 13 6 052 and 11 4 310 .

Tightening torque. 10 Nm.

Fig 4: Connecting Special Tools

G09918870

Courtesy of BMW OF NORTH AMERICA, INC.

Screw in pressure sensor 81 38 0 431 592 manually with special tool 11 4 310 .

Fig 5: Screwing-In Pressure Sensor With Special Tool (11 4 310)

G09918871

Courtesy of BMW OF NORTH AMERICA, INC.

Screw prepared special tools (1) into cylinders according to diagnosis information.

Fig 6: Screwing Special Tools Into Cylinders

G09918872

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Disconnect ignition coils and injector wiring harness from DME control unit (2).

Fig 7: Identifying DME Control Unit And Wiring Harness Connection

G09914032

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Compression check, electronic .

Connect ISID and IMIB (Integrated Measurement Interface Box) (1).

Follow diagnosis instruction.

Fig 8: Identifying Integrated Measurement Interface Box (IMIB)

G09918874

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fault memory.