Automatic Transmission Key Interlock Solenoid: Inspection

INSPECT KEY INTER LOCK SOLENOID
1. Disconnect the solenoid connector.
2. Connect KLS+ (4) terminal to the batteries' positive (+) terminal, and KLS- (3) terminal to the battery negative (-) terminal, and apply about 12V between KLS+ - KLS- terminals.
  
  Fig 1: Identifying Key Interlock Solenoid Connector For Inspection
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that operation noise can be heard from the solenoid.
If the solenoid does not operate, replace the solenoid.