Electronically Controlled Transmission Communication Circuit

Electronically Controlled Transaxle 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 electronically controlled transaxle occurs, a signal to prevent upshift until the end of the uphill slope is sent from the cruise control ECU to the ECM. Terminal ECT of the cruise control ECU detects the shift change signal (output to electronically controlled transaxle No.2 solenoid) from the ECM.
If vehicle speed down and terminal ECT of the cruise control ECU receivers down shifting signal, it sends a signal from terminal OD to ECM to cut overdrive until the end of the uphill slope, and the gear shifts are reduced.

Wiring Diagram:

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INSPECTION PROCEDURE