FixVault
Home › Lexus › 2008 › IS 350 › Repair and Diagnosis › Body & Frame › Door Locks › Door Lock › Smart Access System With Push-Button Start › Room Oscillator Circuit › Inspection Procedure

Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the P33 ECU connector.
    2. Disconnect the oscillator connectors.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection (Symbols) Condition Specified Condition
      P33-12 (CG5B) - P15-3 (CLGB) Always Below 1 Ω
      P33-11 (CLG5) - P15-1 (CLG3) Always Below 1 Ω
      P33-14 (CG6B) - Q30-3 (CLGB) Always Below 1 Ω
      P33-13 (CLG6) - Q30-1 (CLG4) Always Below 1 Ω
      P33-12 (CG5B) - Body ground Always 10 kΩ or higher
      P33-11 (CLG5) - Body ground Always 10 kΩ or higher
      P33-14 (CG6B) - Body ground Always 10 kΩ or higher
      P33-13 (CLG6) - Body ground Always 10 kΩ or higher
      Fig 1: Identifying Certification ECU And Electrical Key Oscillator Connectors
      G05828043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  2. CHECK AND REPLACE ELECTRICAL KEY OSCILLATOR 
    1. Replace the electrical key oscillator.
    2. Check that the entry LOCK/UNLOCK function operates normally.

      OK: 

      Entry LOCK/UNLOCK function operates normally. 

      OK: END (ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

      NG: Go to Next Step 

  3. PERFORM ACTIVE TEST BY TECHSTREAM (CERTIFICATION ECU OUTPUT SIGNAL) 
    1. Reconnect the oscillator and the ECU connectors.
    2. Connect the Techstream to the DLC3.
    3. Turn the engine switch on (IG).
    4. Following the display on the tester, select the "Active Test".

      Smart Key (Certification ECU): 

      TESTER DISPLAY REFERENCE

      Tester Display Vehicle Condition/Test Details
      Fr Transmitter Electrical key Oscillator (console) ON/OFF
      Rr Transmitter Electrical key Oscillator (rear seat) ON/OFF
    5. Measure the frequency according to the value (s) in the table below.
      Fig 2: Identifying P33 Certification ECU Connector
      G05828044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard 

      FREQUENCY REFERENCE

      Tester Connection (Symbols) Condition Specified Condition
      P33-12 (CG5B) - P33-11 (CLG5) During ACTIVE TEST Frequency is generated (higher than 0 Hz)
      P33-14 (CG6B) - P33-13 (CLG6) During ACTIVE TEST Frequency is generated (higher than 0 Hz)

      NG: REPLACE CERTIFICATION ECU 

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

About FixVault