XC90 AWD V8-4.4L VIN 85 B8444S (2005)
values in the engine control module (ECM).
The substitute value allows the vehicle to be driven and the emissions to be kept at a reasonable level, even though vital functions or components are
Functions which may be limited are for example:
camshaft control (CVVT)
fuel pressure regulation.
The substitute values are used and functions restricted so that the system is still able to work whilst protecting components that are required for safety
reasons (for example the throttle angle).
Any diagnostic trouble codes (DTCs) are stored in the internal memory of the engine control module (ECM). The information can be read off via the
data link connector (DLC) in the vehicle.
The table below summarizes the input signals to and output signals from the Engine Control Module (ECM). The signal types are divided into directly
connected signals, LIN and controller area network (CAN) communication. The illustration below displays the same information with the Volvo