Transmission Control Module (TCM)
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 Transmission Control Module, Engine Control Module (ECM), Mass Air Flow (MAF) Sensor And Throttle Position (TP) Sensor
The transmission control module (1) receives the following information from the engine control module (ECM) (2):
- engine air mass and speed from the mass air flow (MAF) sensor (3)
- throttle angle from the throttle position (TP) sensor (4).
The transmission control module (TCM) uses this information to calculate gear shifting.