LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2015 >> LX 570 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System With Push-Button Start (Keyless Entry) (Diagnostics & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> Symptom Tests >> Rear Door RH Entry Unlock Function does not Operate [08/2013 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Rear Door RH Entry Unlock Function does not Operate [08/2013 - ]: Procedure

  1. CHECK POWER DOOR LOCK OPERATION 
    1. When the master switch assembly door control switch is operated, check that the locked doors unlock.

      OK

      Door locks operate normally.

    NG → See step   9 

    OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (TOUCH SENSOR) 
    1. Using the Techstream, read the Data List.
      SMART ACCESS

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Pr-Door Touch Sensor Passenger side rear door touch sensor / ON or OFF ON: Touch sensor touched
      OFF: Touch sensor not touched      		 -

      OK

      "ON" (sensor is touched) and "OFF" (sensor is not touched) appears on the screen.

    NG → See step   3 

    OK → See step   10 

  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - DOOR ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the E30 ECU connector.
      GTY115633Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the z26 oscillator connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E30-2 (SEL4) - z26-4 (SEL) Always Below 1 Ω
      E30-27 (SEN4) - z26-6 (SENS) Always Below 1 Ω
      E30-2 (SEL4) - Body ground Always 10 kΩ or higher
      E30-27 (SEN4) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - REAR DOOR OUTSIDE HANDLE) 
    1. Disconnect the z25 handle connector.
      GTY128308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the z26 oscillator connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z25-6 (SGT) - z26-2 (SGT) Always Below 1 Ω
      z25-6 (SGT) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. REPLACE DOOR ELECTRICAL KEY OSCILLATOR 
    1. Replace the door electrical key oscillator. Refer to DISASSEMBLY [08/2013 - ] - Step 40 .

    NEXT: Go to next step 

  6. CHECK DOOR ELECTRICAL KEY OSCILLATOR OPERATION 
    1. Check that the entry function operates normally.

      OK

      Operates normally.

    NG → See step   7 

    OK → END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

  7. REPLACE REAR DOOR OUTSIDE HANDLE 
    1. Replace the rear door outside handle. Refer to DISASSEMBLY [08/2013 - ] - Step 35 .

    NEXT: Go to next step 

  8. CHECK REAR DOOR OUTSIDE HANDLE OPERATION 
    1. Check that the entry function operates normally.

      OK

      Operates normally.

    NG → See step   10 

    OK → END (REAR DOOR OUTSIDE HANDLE IS DEFECTIVE) 

  9. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  PROBLEM SYMPTOMS TABLE [08/2013 - ] 
  10. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2013 - ] 
scientia non olet · About LEMON Manuals