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Yes,I still need help with this issue
This issue started unexpectantly and after no maint or accident. The cycle time of the relay appears to be in a pattern (e.g every 6 - 7 seconds at times). If key is in ignition, the clicking (cycling of the EFI relay stops). If I remove the EFI relay the battery does not drain over time (when parked).
No after market remote start. No after market attachments. Car is stock. Allways run fine.
I really appreceate your time but my ECU checks out OK. I am suspecting something in the ignition system as I think that it is the ignition that is telling the ECU (MREL pin) to energize when it should not. The reason that I say this is due to the fact that when the Key is in the ignition the relay cycling stops. Obviously can't leave the key in. Grounds and power sources are connected tightly. I will do more test and checking of the ECU circuitry and respond to you tomorrow (my Thursday morning).