Control M O D U L E - Fiat Bravo Service Manual

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Table of Contents

Auto transmission and differential

Components and operation

CONTROL M O D U L E

The control module contains the electronic control logic of the automatic transmission, where the vari-

ous functions are memorized, and is located under the rear seat.

The control module receives information concerning the operation of the automatic transmission from

the various switches and sensors located on the gearbox, engine and dashboard, and issues the appro-

priate commands to four solenoids contained in a valve assembly located at the front of the automatic

transmission, and to the fuel injection/ignition electronic control unit for reducing the driving torque

under particular operating conditions.

Control module functions

In accordance with the commands received from the driver via the various switches and also the signals

coming from the sensors concerning the operating conditions, the control module ensures the correct

operation of the gearbox by means of the following functions:

- actuation of gear changes,

- locking of torque converter (lock-up function),

- execution of driving mode,

- hydraulic pressure varations,

- check on gear change times,

- check on gear changes,

- safety function,

- self-test function.

Publication no. 506.670/06