System Outline

When the Ignition SW is turned to ACC position the current from the CIGfuse flows to TERMINAL 1 of the shift lock ECU, in the ON position, the current from the ECU-IG fuse flows to TERMINAL 5 of the ECU.

1. SHIFT LOCK MECHANISM
With the Ignition SW ON, when a signal that the brake pedal is depressed (stop light SW ON) and a signal that the shift lever is put in "P" position (continuity between p1 and P of the shift lock control SW) is input to the ECU, the ECU operates and current flows from TERMINAL 5 of the ECU --> TERMINAL SLS+ of the shift lock solenoid --> solenoid TERMINAL SLS- --> TERMINAL 3 of the ECU --> GROUND. This causes the shift lock solenoid to turn ON (plate stopper disengages) and the shift lever can shift into position other than the "P".
2. KEY INTERLOCK MECHANISM
With the Ignition SW ON or ACC position, when the shift lever is put in "P" position (no continuity between p1 and P of shift lock control SW), the current flowing from TERMINAL 2 of the ECU --> key inter lock solenoid is cut off. This causes the key inter lock solenoid to turn off (lock lever disengages from lock position) and the Ignition key can be turned from ACC to LOCK position. If the Ignition key is left in ACC or ON position with the shift lever in other than "P" position, than after Approx. One hour the ECU operates to release the lock.