System Inputs

The TCM uses the permanent voltages supply to support and to maintain data in the random access memory (RAM).

The terminal 15 input is used to wake up the TCM. Once awake the TCM commences its initialization sequence. This input is not a power supply input to the TCM. For initialization to commence the ignition must be switched to the "II2" position and Vbat above 7V but below 16V (30ms after terminal 15 signal on, the initialization of the TCM starts). Initialization time is 500ms max. When initialization is finished, the Drive Program is started and TCM has full functionality.

The TCM has one internal solenoid ground for all internal solenoids (SV and PR).

This internal input acts as the ground for position switch. The TCM requires two vehicle ground supplies (terminal 31). Both ground wires are linked to one grounding point on the vehicle. The TCM incorporates polarity reversal protection.