Basic Troubleshooting

A140 E transaxle, also called Electronic Controlled Transaxle (ECT), differs from the oil pressure control type transaxle (A140L) in that it is controlled by a microcomputer. Accordingly, troubleshooting procedures differ also.

Trouble occurring in the ECT can stem from one of three sources: the engine, the ECT electronic control unit or the transaxle itself. Before troubleshooting, determine in which these three sources the problem lies, and begin troubleshooting with the simplest operation, gradually working up in order of difficulty

Before troubleshooting an ECT, first determine whether the problem is electrical or mechanical. To do this, just refer to the basic troubleshooting flow-chart.

If the cause is already known, using the basic troubleshooting chart below along with the general troubleshooting chart under Diagnosis By Symptom should speed the procedure.

Basic Troubleshooting: