Shift Interlock: Description and Operation

When the Ignition SW is turned to ACC position the current from the CIG fuse flows to TERMINAL 1 of the shift lock ECU. At the ON position, the current from the ECU-IG fuse flows to TERMINAL 3 of the Shift Lock 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 position SW) is input to the Shift Lock ECU. The Shift Lock ECU operates and current flows from TERMINAL 3 of the Shift Lock ECU to TERMINAL SLS+ --> TERMINAL 2 of the shift lock Solenoid --> Solenoid --> TERMINAL 1 --> TERMINAL SLS- --> TERMINAL 5 of the Shift Lock ECU --> GROUND. This causes the shift lock solenoid to turn ON (plate stopper disengages) and shift lever can be shifted into other position than the "P" position.

2. KEY INTER LOCK MECHANISM
With the Ignition SW at ON or ACC position, when the shift lever is put in "P" position (no continuity between P2 and P of shift lock control SW), the current from TERMINAL 4 of the Shift Lock ECU to key interlock solenoid is cut off. This causes the key interlock solenoid to turn OFF (lock lever disengages from lock position) and the Ignition key can be turned from ACC to LOCK position.