2tx
Probationary Member
- 1
- 0
- Feb 10, 2013
-
Norway,
Europe
ABS fault code 45, solenoid valve circuit # 3 (rear)
The abs ecu is failing when cold, at room temperatur, ore heatet with heat gun it works.
The output # 3 is not powered up during self check, ABS light on...
ABS-ECU MB863941 X2T30571
All electrolytt capasitors are changed
The darlington transistor # 3 from bottom, and the belonging switch transitor are changed.
I can not find any transistor driver IC on this board.
Upper left corner bottom board 9 pin IC are power supply, I assume for prosessor chip...
4 IC's left bottom board, are op amps...
Actually heat ore freeze darlington transistor # 3, would make it switch ore brake....
I need help, any tips ore documentation are appreciated
The abs ecu is failing when cold, at room temperatur, ore heatet with heat gun it works.
The output # 3 is not powered up during self check, ABS light on...
ABS-ECU MB863941 X2T30571
All electrolytt capasitors are changed
The darlington transistor # 3 from bottom, and the belonging switch transitor are changed.
I can not find any transistor driver IC on this board.
Upper left corner bottom board 9 pin IC are power supply, I assume for prosessor chip...
4 IC's left bottom board, are op amps...
Actually heat ore freeze darlington transistor # 3, would make it switch ore brake....
I need help, any tips ore documentation are appreciated
