Secondary Signal Checks

CHECKING SECONDARY SIGNAL FOR BREAKERLESS IGNITION DISTRIBUTION:




Engine test step 10

- Remove ignition coil.
- Attach special tool 12 7 030 to the ignition coil to be measured.
- Attach high-voltage pliers to the ignition lead.




- Connect ground lead of adapter to vehicle ground and the ignition coil.
- Connect up diagnosis connector.
- In the absence of a trigger signal (terminal 1), connect black terminal of universal adapter cable to Pin 1 of the primary adapter cable.




- Generate standing signal on the oscilloscope by pressing button R on the Service Tester.

NOTE: Neighboring ignition leads can give rise to interference in the oscilloscope screen display.

- Interrogate the fault memory and obtain fault messages.