Control Module: Description and Operation

EAT ECU

The EAT ECU operates the solenoid valves in the gearbox to provide automatic control of gear shifts and torque converter lock-up. The EAT ECU is attached to a protective bracket which is secured to the cabin floor below the LH front seat. A 55 pin connector links the EAT ECU to the vehicle wiring.
Software in the EAT ECU monitors hard wired inputs and exchanges information with the ECM on a Controller Area Network (CAN) bus to determine gear shift and torque converter lock-up requirements. Resultant control signals are then output to the gearbox solenoid valves.





EAT ECU connector





EAT ECU connector pin details





CAN communications between EAT ECU and ECM

WARNING lamps





WARNING lamps and selector lever position indication

Illumination for each warning lamp is provided by a non serviceable LED.