Car came in with no throttle response. Codes p1500 throttle control motor failure p1523 motor failure p1526 lower limits not learned. p1526 would not clear p1523 and p1500 came back on start up. Check wiring to throttle body 5v feed and earth, two good signals from position sensor.

The motor wires had 3.5v to each one. Checked codes on vaux tis,Replace throttle body On replacing the throttle body it didn't fix the car. Checked the feeds and earths to the ecu ok. Fitted new ecu and the car was fixed. Refitted original throttle body to put new one on a large shelve. Road Tested and went home happy.

Came in this morning and the cars battery was flat, the cars has been in the garage for 4 days with no battery problems. Jumped started car and drove out. put battery on charge for a couple of hours but it didn't take a charge. Jump started car again with battery pack and origonal fault returned.

On asking the owner again on how the fault occurred there was no mention of a flat battery, stopped at a shop and on starting fault occurred.

So my questons are am i missing something on the wiring, should i have left the new throttle body on because the old one is spiking the ecu or jump starting. A new battery is now fitted. Sorry for the long post

Any help would be appreciated