Thanks Bluedog.
In the light of the links you shared (not sure I understand all) I've just tried again different variations:
* Bridge between pins 5 and 13 (body earth)
- Only key on, EPS blinking 57
- Engine idling, EPS blinking 57
- Engine charged with accelerator, EPS blinking 57
In all the above cases, Air Bag light is blinking continouesly.
No Check Engine light.
* Bridge between pins 5 and 12 (signal earth)
Check Engine light blinking countinouesly.
* No bridges
No lights.
Any interpretation please?
Oh yes one more thing, when I remove lambda sensor connector, or even the ISC valve, no warning light surges, is it normal?
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