Unlock Position Sensor Signal Circuit: Procedure

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying E51 Connector Terminals

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   Standard voltage

   Tester connection (Symbols)	Condition	Specified condition
   E51-4 (SLP1) - E51-2 (SGND)	Engine switch off Turn the engine switch on (ACC or IG)	Below 1 V

OK → CHECK SMART KEY SYSTEM 

NG: Go to next step 

1. Disconnect the E51 connector from the steering lock actuator assembly.
   Fig 2: E51 & E7 Connector Terminals

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2. Disconnect the E7 connector from the main body ECU.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester connection (Symbols)	Condition	Specified condition
   E51-4 (SLP1) - E7-18 (SLP)	Always	Below 1 Ω
   E51-4 (SLP1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  PROBLEM SYMPTOMS TABLE