For the archives:
The
PF01 TPS fitted to level 1, 1a and 6 Ecus's are open circuit at idle.
The
PFO9 TPS fitted to levels 8 and P8 are NOT open circuit at idle.
The software requires the correct TPS info to bring the engine decent idle, overun, very light throttle and cold start performance using its corresponding mapped strategies for these conditions.
If the wires are just swopped around and the inverse sensor used...
L1, 1a and 6 will think the throttle is slightly open at all times and run suspect with poor idle, cold running, overun etc.
L8 and P8 will see a sensor error due to open circuit sensor and may drop straight into limp home mode at worst or at best run with a high idle speed.
The same errors as above can be caused by an incorrectly
Adjusted TPS as well.
Phew.. its been a while chaps.
