Special tools required:

12 7 040
12 7 041
12 7 042
12 7 043
12 7 045
12 7 046
12 7 050

Carry out secondary voltage check using test adapter 12 7 040.

IMPORTANT: Observe safety precautions. Switch off ignition.

NOTE: The following checks can be carried out with the adapter kit:

Secondary voltage check
Comparison between ignition coils from different manufacturers
Ignition coil faults
Spark plug faults
Injection system faults

Fig 1: Identifying Test Adapter Kit

Connect special tool 12 7 043 (connecting cable) to special tool 12 7 041 (single adapter).

Fig 2: Identifying Connecting Cable

NOTE: Checks on engines with single spark ignition coils: Special tool 12 7 041 (single adapter) in conjunction with special tool 12 7 045 for fitting onto ignition coil.

Fig 3: Installing Special Tool

Remove cover for ignition coils.