Electronically Controlled Transmission Communication Circuit

Electronically Controlled Transmission Communication Circuit

CIRCUIT DESCRIPTION

When driving uphill under cruise control, in order to reduce shifting due to ON-OFF overdrive operation and to provide smooth driving, when down shifting in the electronic controlled transmission occurs, a signal to prevent upshift until the end of the uphill slope is sent from the cruise control ECU to the electronic controlled transmission.
Terminal ECT of the cruise control ECU detects the shift change signal (output to electronic controlled transmission No.2 solenoid) from the electronically controlled transmission.
If vehicle speed down, also when terminal electronically controlled transmission of the cruise control ECU receives down shifting signal, it sends a signal from terminal OD to OD1 to cut overdrive until the end of the uphill slope, and the gear shifts are reduced and gear shift points in the electronically controlled transmission are changed.

Wiring Diagram:

INSPECTION PROCEDURE

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