Thank you for your response Steve. Yes you right, I’m just a bit slow at the moment!

The EHA obviously works in some form as it performs cold start enrichment and engine warm-up, and the engine does not stall or miss during this time (or any other). Also all the usual sensors’ feeding the CIS, MAS and EZL are obviously working fine to give the EHA some sort of corrective information.

Would adjusting the base line fuel/air mixture with the allen key alter the EHA baseline current readings?

Is it also normal the when turning the ignition off and removing the key that the CIS unit sill provides the EHA with a small voltage and hence a small current flow of about 11mA through the 20 ohm actuator coils? (perhaps a capacitor in the CIS unit??)

Once again thanks

Tony