12 13 ... Checking Secondary Signal For Stationary Ignition Distribution

NOTE:

For Special Tool identification, see SPECIAL TOOLS - M3 .

Special Tools Required:

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: Removing 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 Diagnosis Connector

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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, refer to appropriate article.

Fig 3: Identifying Interference On Screen Of Oscilloscope

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