Without Scan Tool
DIAGNOSTIC FUNCTIONCHECK "N" RANGE LIGHT
The "N" range light flashes once per second if there is an abnormality in any of the items in the table below which are related to the A/T system. Check for diagnostic trouble codes if the "N" range light is flashing once per second.
"N" range light flashing items
^ Input shaft speed sensor
^ Output shaft speed sensor
^ Each solenoid valve
^ Gear incorrect ratio
^ A/T control relay system
CAUTION
If the "N" range light is flashing, the transmission fluid temperature is high. (it flushes when the fluid is approximately 125°C or more and goes off when the fluid is approximately 115°C or less)