CAS signal runs to the ECU,
drivers in that trigger the coil spark.
so either the wiring is faulty between the two or the ECU drivers are shot.
Usually I find this out after much testing then grilling the owner if it's ever had a flat battery and been jump started with the leads on the wrong battery terminals,
Gnteed to fry ECU coil drivers.
Might be time to send the ECU to some body like "BBE REMAN".
It's around £40 or so to test.
Posted on Tuesday 21st of August 2018Don't understand this? Ask a question