Control Module

Control module

Location




The transmission control module (TCM) is located in the control module box in the engine compartment, compartment no. 3, with other engine management system control modules.

Part and serial number




The transmission control module (TCM) P/N and serial numbers are stamped on a plate on the unit.
- Volvo P/N
- Identification code
- Part version
- Serial number
- Number according to car specification, type code
- Location. Compartment no. 3 in the control module box

Signal voltage levels
The system works at two signal voltage levels, 5V and 12V, on the terminals in the transmission control module (TCM) which is connected to the engine control module (ECM). Connector A, #A1 - #A30.
5 V logic:
AW50-42 - EZ 129K/LH 3.2.
12 V logic:
AW50-42 - Fenix 5.2, Motronic 4.3 and Motronic 4.4.