A/T Interlock

If there is an A/T interlock judgment malfunction, the transmission is fixed in 2nd gear to make driving possible.
NOTE: When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed, but this is not a turbine revolution sensor malfunction.
When the coupling pattern below is detected, the fail-safe action corresponding to the pattern is executed.

Fig 1: A/T Interlock Coupling Pattern Chart
Courtesy of NISSAN MOTOR CO., U.S.A.