Unlock Position Sensor Signal Circuit: Procedure

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Checking Voltage Of Steering Lock Actuator Assembly (Steering Lock ECU)

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   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   D11-4 (SLP1) - D11-2 (SGND)	Engine switch off Engine switch on (ACC or IG)	Below 1 V

NG → See step   2 

OK → See step   3 

1. Disconnect the D11 connector from the steering lock actuator assembly.
   Fig 2: Checking Harness And Connector (Steering Lock Actuator Assembly - Main Body ECU)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the D8 connector from the main body ECU.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Condition	Specified Condition
   D11-4 (SLP1) - D8-18 (SLP)	Always	Below 1 Ω
   D11-4 (SLP1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4