Ignition Coil: Testing and Inspection

Checking Ignition Coils (M60, M62, S62)


CAUTION!

Switch off ignition.







Acoustic cover version 1:
(Acoustic cover screwed down)
Remove sealing caps (1).
Release nuts (2).
Remove acoustic cover.







Acoustic cover version 2:
(Acoustic cover with press-stud fastener)
Press press-stud fasteners (1 to 4) in succession and simultaneously raise acoustic cover slightly. Remove acoustic cover when all four press-stud fasteners have been unlocked.

Installation:
Position acoustic cover and press downwards until press-stud fasteners (1... 4) are heard to engage.







Acoustic cover version 3 (E53):
Turn fasteners on acoustic cover 900 counterclockwise.
Remove acoustic cover.







M60, M62:
Remove sealing caps.
Release nuts.
Remove covers on ignition coils.







Installation:
Check profile seal (1) for damage and correct seating, replace if necessary.







S62:
Release cap nuts (1) on left and right.
Remove cover (2) on ignition coils on left and right.







M60, M62, S62:
Use adapter set 12 7 040 to check ignition coils.


NOTE: Attach special tool 12 7 045 to single adapter 12 7 041.







Switch off ignition!
Attach single adapters 12 7 041 to ignition coils of left and right cylinder banks.







Connect single adapters 12 7 041 with connecting cable set 12 7 043.


NOTE: Pass long connecting cable over engine.







Connect DIS Tester to diagnosis socket. Connect RZV connection line of DIS Tester to last test adapter.
Connect trigger pliers of DIS Tester to supply lead of ignition coil of
1st cylinder.
- Select
- Select
- Select
- Select
- Select <8 cylinders>
For subsequent procedure, follow DIS instructions.