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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 361 (Engine Electrical System - Repair Instructions) >> Ignition Coils >> 12 13... Checking secondary signal for stationary ignition distribution

12 13... Checking secondary signal for stationary ignition distribution

WARNING: This page is about a different car, the 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 530i, and 2004 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools Required 

Remove ignition coil. Clip Special Tool 12 7 030 on relevant ignition coil to be tested. Clip high tension clip around ignition lead.

Fig 1: Removing Ignition Coil
G03260817Courtesy of BMW OF NORTH AMERICA, INC.

Connect earth lead of adapter to vehicle earth and ignition coil.

Connect up diagnosis connector.

If trigger signal is not present (terminal 1), connect black clip of universal adapter cable to pin 1 of primary adapter cable.

Fig 2: Connecting Up Diagnosis Connector
G03260818Courtesy of BMW OF NORTH AMERICA, INC.

Produce a stationary signal by pressing key R on the tester.

NOTE: Neighboring ignition leads could produce interference on the screen of the oscilloscope.

Interrogate fault memory and its fault reports - refer to appropriate SELF-DIAGNOSTIC article.

Fig 3: Identifying Signal Waveform (1 Of 6)
G03260819Courtesy of BMW OF NORTH AMERICA, INC.