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

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

12 7 030 . See ENGINE ELECTRICAL SYSTEM - SPECIAL TOOLS .

Engine Test Step 10

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: Connecting Special Tool 12 7 030 On Relevant Ignition Coil

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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 Earth Lead Of Adapter To Vehicle Earth

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

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

Refer to the fault memories of engine control units for additional troubleshooting.

Interrogate fault memory and its fault reports.

Fig 3: Identifying Stationary Signal Waveform

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