A/T Shift Lock System

INPUT/OUTPUT SIGNAL FLOW

SHIFT LOCK SYSTEM ELECTRICAL PARTS LOCATION





Emergency lever: Used only in case of emergency (when the battery runs down and the ignition key cannot be removed from the key cylinder).

DESCRIPTION
- The electrical key interlock mechanism also operates as a shift lock:
With the key switch turned to "ON", the selector lever cannot be shifted from "P" (parking) to any other position unless the brake pedal is depressed.
With the key switch turned to "OFF" or with the key removed, the selector lever cannot be shifted from "P" to any other position. The key cannot be removed unless the selector lever is placed in "P".
- The shift lock and key interlock mechanisms are controlled by shift lock control unit.
The shift lock control unit sends each ON-OFF signal to the shift lock solenoid and the key lock solenoid.
Then the shift lock solenoid operates the lock lever to hold the shift lever in "P" position.
And the key lock solenoid operates the stopper to prevent removing the ignition key from the key cylinder.





Wiring Diagram

Diagnostic Procedure 1
SYMPTOM: Selector lever cannot be moved from "P" position when applying brake pedal. It can be moved when releasing brake pedal. Selector lever can be moved from "P" position when key is removed from key cylinder.





Part 1 of 4





Part 2 of 4





Part 3 of 4





Part 4 of 4

Diagnostic Procedure 2
SYMPTOM: Ignition key cannot be removed when selector lever is set to "P" position. It can be removed when selector lever is set to any position except "P".





Part 1 of 3





Part 2 of 3





Part 3 of 3

Shift Lock Control Unit Inspection





- Measure voltage between each terminal by following "SHIFT LOCK CONTROL UNIT INSPECTION TABLE".
- Pin connector terminal layout.





Shift Lock Control Unit Inspection Table (Data are reference values.)

Component Check
SHIFT LOCK SOLENOID





- Check operation by applying battery voltage to shift lock solenoid harness connector.

DETENTION SWITCH
Shift








- Check continuity between terminals (5) and (6) of shift lock solenoid harness connector.

Key








- Check continuity between terminals (5) and (7) of shift lock solenoid harness connector.

KEY LOCK SOLENOID





- Check operation by applying battery voltage to key lock solenoid harness connector.
Operating sound must be emitted.

KEY SWITCH








- Check continuity between terminals (3) and (4) of key switch harness connector.

STOP LAMP SWITCH








- Check continuity between terminals (1) and (2) of stop lamp switch harness connector.
Check stop lamp switch after adjusting brake pedal.