9-5 Sport Wagon (9600) L4-2.3L Turbo (B235) (2003)
/l4-2.3l_turbo_(b235)/Page-1121001.png)
Engine Control Module: Description and Operation
Stabilizer System, ESP
Engine Torque (Engine Control Module)
Engine torque
The engine control module (ECM) converts the air mass/combustion into information on engine torque. This information is transmitted on the P-bus.
The TC/ABS control module uses the engine torque information to calculate the current drive wheel torque and detect faults in the system.
Engine speed and vehicle speed are used to calculate the current ratio for cars with manual transmission. The control module in cars with automatic
transmission leaves information about the ratio on the P-bus.
