Brake Interlock System; Shift Lock Solenoid Control - Suzuki sq-416-420-625 Service Manual

7B1-68 AUTOMATIC TRANSMISSION (4 A / T)
1. Select lever
2. Shift lock solenoid
3. Brake light switch
4. Brake pedal
5. Cable
6. Ignition switch
Type-1
1. Select lever
2. Interlock cam
3. Shift lock solenoid rod
4. Shift lock solenoid

BRAKE INTERLOCK SYSTEM

SHIFT LOCK SOLENOID CONTROL

This system consists of shift lock solenoid control system and inter-
lock cable control system.
The shift lock solenoid control system is so designed that the selec-
tor lever can not be shifted from "P" range position unless the igni-
tion switch is turned ON and the brake pedal is depressed. And the
interlock cable control system is so designed that the selector lever
cannot be shifted from "P" range position unless the ignition switch
is turned to "ACC" or "ON" position. Also, the ignition key cannot be
pulled out of the key slot unless the selector lever is in "P" range.
SHIFT LOCK SOLENOID CONTROL OPERATIONS
When the select lever is in "P" range, the ignition key position is
"ON" and depressing the brake pedal cause the electric current to
flow to the solenoid. As the shift lock solenoid rod (or the lock plate)
is drawn toward the solenoid in this state, it frees the interlock cam
(or the detent pin), which then allows the select lever to be shifted
from "P" range to any other position.
Even when the select lever is in "P" range, if the ignition key position
is "LOCK" or "ACC" or the brake pedal is not depressed, the electric
current does not flow to the solenoid.
In this state, the shift lock solenoid rod (or the lock plate) is pushed
away from the solenoid by spring force and it obstructs the interlock
cam (or the detent pin) movement. Thus the select lever button
does not work even when pressed and the select lever shift is pre-
vented.