My e46 has similar problems to this (2005 e46 320d - Intermittent non-start (only cranks) +temp gauge shoots into the red +DSC light flashes [heads up]). Engine cranks, but does not fire. Fuel pump is not turned on, fuel gauge in dash goes straight to maximum. I want to test the blue DME relay based on the previous posters experience, but which pins are which? I assume its a straightforward relay with:
What unit provides the signal to activate this relay?