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.
Read and comply with all instructions.
Necessary preliminary tasks:
Unscrew tip (1) from special tool 11 0 222.
Attention!
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.
Screw special tool 11 0 222 onto special tool 11 8 731 to 10 Nm.
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.
Screw special tool 11 0 222 by hand into the spark plug thread.
- Connect vehicle with diagnosis tester.
- Select service function "Check compression of all cylinders".
- Observe diagnosis instructions.
Illustration: N74.
Disconnect connector A46*6B.
Remove relay K21 from slot.
Compression check, electronic:
Follow diagnosis instruction.
Assemble engine.
Delete the fault memory.