CHECK OUTPUT SIGNAL FROM TCM USING SUBARU SELECT MONITOR.

Return the engine to idling speed, shift the select lever to “N” range and read the data.

NOTE:

A speed difference between front and rear wheels causes the ABS warning light or the VDC warning light to illuminate, but this does not indicate a malfunction. If the warning light is illuminated, clear the ABS and VDC memories of the on-board diagnostic system after completing AT control diagnosis.

QUESTION

Is the measured value 0%?

Yes No

The circuit is normal.
If the ATF temperature warning light is flashing, repair the harnesses or connectors between TCM and transmission.