DTC Set Conditions

If the A/T control relay voltage is less than 7 volts at terminals 77 and 89 after the ignition switch has been turned to the "ON" position it is judged that there is an open circuit or a short-circuit in the A/T control relay ground and diagnostic trouble code number "54" is output. The transmission is locked into the 3rd gear as a fail-safe measure, and the "N" range light flashes once per second.