Unlock Position Sensor Signal Circuit: Procedure

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying J29 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Steering Lock Actuator Assembly)

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J29-4 (SLP1) - J29-2 (SGND)	Turn the engine switch off Turn the engine switch on (ACC or IG)	Below 1 V

NG → See step   2 

OK → REPLACE STEERING LOCK ACTUATOR ASSEMBLY 

1. Disconnect the J29 connector from the steering lock actuator assembly.
   Fig 2: Identifying J55 And J29 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Steering Lock Actuator Assembly)
   *2	Front view of wire harness connector (to Power Source Control ECU)

2. Disconnect the J55 connector from the power source control ECU.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J29-4 (SLP1) - J55-26 (SLP)	Always	Below 1 Ω
   J29-4 (SLP1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   3