VP Fan and check engine light stay on 1 min after startup

[drewdc90]

I have a VP and did an engine swap with a VR and removed the non working air con setup from engine bay but left wiring attached to nothing. When the car starts it runs for1 min then the fan starts and check engine light comes on and both stay on. I changed back to the original sensors that worked fine before the change but still the fan comes on and stays on. Will this affect the mixture? I have an Ellerys book but the wiring diagram is not very good. I don't have access to a diagnostic cable so any help would be great as I am ready to install a seperate sensor and relay to power the fan.

 

[markovr]

did you reconnect the vacuum sensor at the back of the throttle body?

 

[drewdc90]

I'll check that thanks

 

[drewdc90]

Just manged to get the ECM fault codes and it shows fault code 15.
This says high voltage yet I don't measure a high voltage . Less than 2 v. The yellow wire seems like it goes to earth as it has a good earth resistance, Is this normal?