7A-16 AUTOMATIC TRANSMISSION (AW30-40LE)
DIAGNOSIS
BASIC TROUBLESHOOTING
AW30-40LE transmission, called Electronic Controlled Transmission (ECT), differs from oil pressure control type
transmissions in that it is controlled by a microcomputer. Accordingly, its troubleshooting procedure differs also.
Before troubleshooting an ECT, first determine whether the problem is electrical or mechanical. To do this, just refer
to the basic troubleshooting flowchart provided below.
If the cause is already known, using the basic troubleshooting chart below along with the troubleshooting chart
should speed the procedure.
F07R200005