Unlock Position Sensor Signal Circuit: Procedure

Fig 1: Checking Steering Lock Actuator (SLP1 Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Condition (Steering Lock Position)	Specified Condition
   L33-4 (SLP1) - L33-2 (SGND)	Locked	11 to 14 V
   L33-4 (SLP1) - L33-2 (SGND)	Unlocked	Below 1 V

OK → See step   3 

NG: Go to next step 

Fig 2: Identifying L13 Main Body ECU And L33 Steering Lock ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the L13 main body ECU connector.
2. Disconnect the L33 steering lock actuator connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   L13-18 (SLP) - L33-4 (SLP1)	Always	Below 1 Ω
   L33-4 (SLP1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE STEERING LOCK ACTUATOR