V70 2.4 L5-2.4L VIN 61 B5244S (2001)
All signals between the engine control module (ECM) and the electronic throttle module (ETM) are transmitted via the Controller area network (CAN).
A back-up signal is transmitted via a directly connected signal cable between the accelerator pedal (AP) position sensor and the electronic throttle
module (ETM). However the cable runs via the engine control module (ECM).
A simple way to check that the electronic throttle module (ETM) is supplied with power is to switch on the ignition. Power is being supplied if the
electronic throttle module (ETM) beeps. In addition there may be a clicking sound when the throttle disc is calibrated to the mechanical limit position.
The electronically controlled throttle system can be diagnosed by both the engine control module (ECM) and the electronic throttle module (ETM).
However, the information is read off from the engine control module (ECM).