PSM Coding
#1
Instructor
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Just swapped my PSM/ABS module with a used unit with identical part numbers. Old unit had a hydraulic pump error and the pump would not run. After replacing, the pump can be commanded on but when I scan for fault codes (Autel Maxis Elite) I get a code 1044 module not coded properly. When I go into coding, I chose 17" and 18" Brembo - I have 18" wheels. I do not know if it is MSR or non-MSR and I do not know if it is HSA or non-HSA. Frame is coded as Steel. Can anyone help with the HSA and MSR as to what they mean and what selection I should make. to get this code to clear.
Additionally, I seem to have a small amount of air trapped somewhere in the system. Pedal is firm on first brake application but if you let off and immediately reapply, it will fade under constant pressure. I used a pressure Bleeder (push) and bled rr,lr,rf,lf. Still had air but mo air leaving the caliper at either bleeder. I manually bled the PSM module by opening the input Lises (2 of them) after assistant pumped up the pedal. Then I did the same on the 4 output lines. Then I rebled with pressure bleeder. I cannot find an automated Bleed anywhere. Any suggestions would be greatly appreciated.
Additionally, I seem to have a small amount of air trapped somewhere in the system. Pedal is firm on first brake application but if you let off and immediately reapply, it will fade under constant pressure. I used a pressure Bleeder (push) and bled rr,lr,rf,lf. Still had air but mo air leaving the caliper at either bleeder. I manually bled the PSM module by opening the input Lises (2 of them) after assistant pumped up the pedal. Then I did the same on the 4 output lines. Then I rebled with pressure bleeder. I cannot find an automated Bleed anywhere. Any suggestions would be greatly appreciated.