Other Output Signals

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Motronic 4.4 Output Signals

Courtesy of VOLVO CARS OF NORTH AMERICA.

The engine control module (ECM) also transmits signals to the following components:

confirmation of torque limiting by ignition retardation, to the automatic transmission control module (TCM) (4/28)
engine speed and load signals to the automatic transmission control module (TCM) (4/28)
throttle angle signal to the automatic transmission control module (TCM) (4/28)
engine speed (RPM) signal to the combined instrument panel tachometer (5/1)
engine coolant temperature (ECT) signal to the combined instrument panel (5/1).
injected fuel quantity to the combined instrument trip computer (5/4)