10-03-2015, 11:03 PM
Some more photos and recap.
Below is the series of events as it happened:
1.Car started normally but hesitated for a moment.
2.At a traffic light, engine ran roughly as if only 2 cylinders firing. Car was towed back to garage (not mine).
3.A mechanic (not me) replaced all plugs. Car started but still rough.
4.Mechanic above pulled each HV wire and found only 2 cylinders firing.
5.When I checked, engine started the died immediately.
6.I monitored signal from ecu to ignition coil input using small pilot 12v pilot lamp.
&.There was dim flashes then nothing anymore.
7.Bench tested ignition coil and found no spark on both and drawing very heavy current. I concluded the coils on LV side shorted out. This coil has no transistors because it is not COP.
8.Replaced coil. Still no spark.
What I did next:
1.Checked for 12v at pins 24,32 and 52. All ok.
2.Checked for 5v on all sensors. All ok.
3.Checked power,logic and sensor ground. All ok.
4.Checked pin 9 switch drive position. OK.
5.Checked continuity of harness wires to sensors from ecu plug to sensors. All ok.
The trouble as you can see occurred in stages and deteriorated in a no start condition.
Finally I want to thank you for your patience and I promise to go thru the procedures you indicated. Will report back in about a week since the car is quite far from where I live.
Below is the series of events as it happened:
1.Car started normally but hesitated for a moment.
2.At a traffic light, engine ran roughly as if only 2 cylinders firing. Car was towed back to garage (not mine).
3.A mechanic (not me) replaced all plugs. Car started but still rough.
4.Mechanic above pulled each HV wire and found only 2 cylinders firing.
5.When I checked, engine started the died immediately.
6.I monitored signal from ecu to ignition coil input using small pilot 12v pilot lamp.
&.There was dim flashes then nothing anymore.
7.Bench tested ignition coil and found no spark on both and drawing very heavy current. I concluded the coils on LV side shorted out. This coil has no transistors because it is not COP.
8.Replaced coil. Still no spark.
What I did next:
1.Checked for 12v at pins 24,32 and 52. All ok.
2.Checked for 5v on all sensors. All ok.
3.Checked power,logic and sensor ground. All ok.
4.Checked pin 9 switch drive position. OK.
5.Checked continuity of harness wires to sensors from ecu plug to sensors. All ok.
The trouble as you can see occurred in stages and deteriorated in a no start condition.
Finally I want to thank you for your patience and I promise to go thru the procedures you indicated. Will report back in about a week since the car is quite far from where I live.