What was the original problem with the ETM, same or different codes as you're seeing now? Did you replace the sensor on the original ETM installed in the car or did you replace the sensor on a different ETM?tonike wrote: ↑07 Apr 2025, 08:08 Looking for help on this matter on S60 2.4 2001
Fault codes were
9520 ECM-9520 ACCELERATOR PEDAL (AP) POSITION SENSOR
951F P0121
918F ECM-918F ACCELERATOR PEDAL (AP) POSITION SENSOR
I've read all the posts and I'm familiar with electronics. I replaced the sensor with sacer with the help of the instructions on this post. I set the magnet so that the signal voltage on idle was 1.35V (tested on bench). On the other sensor the signal voltage was 1.30V. Throttle is behaving strangely and the rpm is going sometimes very high when driving on the road and sometimes stalls the engine on the traffic lights. I calbrated the magnet to 1.47V since some posts were referring that 1.45V should work but the throttle is still not behaving correctly. There's a long lag and sometimes stalls the engine.
Any idea what should I try next or do you think the problem is on the ETM unit? I don't have VIDA right now to read the potentiometer values.
Any other options about fixing this issue? Thanks!
With the Sacer sensor, does it use one output wire for both sides, do you jumper between the two sensor connections on both sides? The reason I ask is you mentioned you measured 1.35V from the sensor and the other side measured 1.30V. If there's one output from the Sacer going to both sides the voltage measurement should be the same. Original setup is two sensors, one on each side and you have disconnect from the original sensor on both sides, did you cut the leg to sensor on the side without the Sacer sensor?
