LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2009 >> Highlander Limited, FWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Engine Immobilizer (Except Hybrid) >> ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) >> Terminals Of Ecu

Terminals Of Ecu

  1. CHECK TRANSPONDER KEY AMPLIFIER 
    1. Disconnect the D27 transponder key amplifier connector and measure the resistance according to the value (s) in the table below.
      Fig 1: Identifying D27 Transponder Key Amplifier Connector
      G05419597Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D27-7 (AGND) - Body ground G - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    2. Reconnect the D27 transponder key amplifier connector and measure the voltage according to the value (s) in the table below.
      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D27-1 (VC5) - D27-7 (AGND) P-G Power source No key is in ignition key cylinder Below 1 V
      D27-1 (VC5) - D27-7 (AGND) P-G Power source Key is in ignition key cylinder 4.6 to 5.4 V
      D27-4 (CODE) - D27-7 (AGND) R-G Demodulated signal of key code data No key is in ignition key cylinder Below 1 V
      D27-4 (CODE) - D27-7 (AGND) R-G Demodulated signal of key code data Key is in ignition key cylinder Waveform 1
      D27-5 (TXCT) - D27-7 (AGND) SB-G Key code output signal No key is in ignition key cylinder Below 1 V
      D27-5 (TXCT) - D27-7 (AGND) SB-G Key code output signal Key is in ignition key cylinder Waveform 2

      If the result is not as specified, the transponder key amplifier may have a malfunction.

    3. Inspect using an oscilloscope.
      1. Waveform 1 (Reference)
        TESTER CONNECTION SPECIFIED CONDITION

        Item Content
        Tester Connection D27-4 (CODE) - D27-7 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Key is in ignition key cylinder
        Fig 2: Waveform 1 Graph
        G04979967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Waveform 2 (Reference)
        WAVEFORM REFERENCE

        Item Content
        Tester Connection D27-5 (TXCT) - D27-7 (AGND)
        Tool Setting 2 V/DIV., 10 ms./DIV.
        Condition Key is in ignition key cylinder
  2. CHECK TRANSPONDER KEY ECU ASSEMBLY 
    1. Disconnect the D41 transponder key ECU connector and measure the resistance and voltage according to the value (s) in the table below.
      Fig 3: Waveform 2 Graph
      G04979968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Identifying D41 Transponder Key ECU Connector
      G05419600Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      ECU TERMINAL REFERENCE

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D41-1 (+B) - D41-16 (GND) GR-V Battery Always 11 to 14 V
      D41-2 (IG) - D41-16 (GND) P-V Ignition switch signal Ignition switch OFF Below 1 V
      D41-2 (IG) - D41-16 (GND) P-V Ignition switch signal Ignition switch ON 11 to 14 V
      D41-3 (KSW) - D41-16 (GND) O-V Unlock warning switch signal No key is in ignition key cylinder 10 kΩ or higher
      D41-3 (KSW) - D41-16 (GND) O-V Unlock warning switch signal Key is in ignition key cylinder Below 1
      D41-16 (GND) - Body ground V - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    2. Reconnect the D41 transponder key ECU connector and measure the resistance and voltage according to the value (s) in the table below.
      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D41-3 (KSW) - D41-16 (GND) O-V Unlock warning switch signal No key is in ignition key cylinder 11 to 14 V
      D41-3 (KSW) - D41-16 (GND) O-V Unlock warning switch signal Key is in ignition key cylinder Below 1 V
      D41-4 (TXCT) - D41-5 (AGND) SB-G Transponder key amplifier communication signal No key is in ignition key cylinder Below 1 V
      D41-4 (TXCT) - D41-5 (AGND) SB-G Transponder key amplifier communication signal Key is in ignition key cylinder Waveform 1
      D41-5 (AGND) - Body ground G - Body ground Ground Always Below 1 Ω
      D41-7 (CTY) - D41-16 (GND) LG-V Door courtesy signal Switch pushed 11 to 14 V
      D41-7 (CTY) - D41-16 (GND) LG-V Door courtesy signal Switch free Below 1 V
      D41-8 (IND) - D41-16 (GND) Y-V Security indicator light signal Security indicator light is on 11 to 14 V
      D41-8 (IND) - D41-16 (GND) Y-V Security indicator light signal Security indicator light is off Below 1 V
      D41-9 (D) - D41-16 (GND) B-V Diagnostic tester communication Without communication Below 1 V
      D41-9 (D) - D41-16 (GND) B-V Diagnostic tester communication During communication Pulse generation
      D41-12 (EFII) - D41-16 (GND) BR-V ECM input signal Ignition switch OFF Below 1 V
      D41-12 (EFII) - D41-16 (GND) BR-V ECM input signal Ignition switch ON Waveform 2
      D41-13 (EFIO) - D41-16 (GND) L-V ECM output signal Ignition switch OFF Below 1 V
      D41-13 (EFIO) - D41-16 (GND) L-V ECM output signal Ignition switch ON Waveform 3
      D41-14 (VC5) - D41-5 (AGND) P-G Power source No key is in ignition key cylinder Below 1 V
      D41-14 (VC5) - D41-5 (AGND) P-G Power source Key is in ignition key cylinder 4.6 to 5.4 V
      D41-15 (CODE) - D41-5 (AGND) R-G Transponder key amplifier communication signal No key is in ignition key cylinder Below 1 V
      D41-15 (CODE) - D41-5 (AGND) R-G Transponder key amplifier communication signal Key is in ignition key cylinder Waveform 4

      If the result is not as specified, the transponder key ECU may have a malfunction.

    3. Inspect using an oscilloscope.
      1. Waveform 1 (Reference)
        TESTER CONNECTION SPECIFIED CONDITION

        Item Content
        Tester Connection D41-4 (TXCT) - D41-5 (AGND)
        Tool Setting 2 V/DIV., 10 ms./DIV.
        Condition Key is in ignition key cylinder
        Fig 5: Waveform 1 Graph
        G04979968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Waveform 2 (Reference)
        WAVEFORM REFERENCE

        Item Content
        Tester Connection D41-12 (EFII) - D41-16 (GND)
        Tool Setting 2 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
        Fig 6: Waveform 2 Graph
        G06122060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Waveform 3 (Reference)
        WAVEFORM REFERENCE

        Item Content
        Tester Connection D41-13 (EFIO) - D41-16 (GND)
        Tool Setting 2 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
        Fig 7: Waveform 3 Graph
        G04979972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Waveform 4 (Reference)
        WAVEFORM REFERENCE

        Item Content
        Tester Connection D41-15 (CODE) - D41-5 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Key is in ignition key cylinder
        Fig 8: Waveform 4 Graph
        G04979967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK ECM (for 2GR-FE) 
    1. Disconnect the B3 ECM connector and measure the resistance according to the value (s) in the table below.
      Fig 9: Identifying B3 ECM Connector
      G05419571Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      ECU TERMINAL REFERENCE

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      B3-1 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    2. Reconnect the B3 ECM connector. Measure the voltage according to the value (s) in the table below.
      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D36-15 (IMO) - B3-1 (E1) BR - W-B Transponder key ECU output signal Ignition switch OFF Below 1 V
      D36-15 (IMO) - B3-1 (E1) BR - W-B Transponder key ECU output signal Ignition switch ON Waveform 1
      D36-16 (IMI) - B3-1 (E1) L - W-B Transponder key ECU input signal Ignition switch OFF Below 1 V
      D36-16 (IMI) - B3-1 (E1) L - W-B Transponder key ECU input signal Ignition switch ON Waveform 2

      If the result is not as specified, the ECM may have a malfunction.

    3. Inspect using an oscilloscope.
      1. Waveform 1 (Reference)
        TESTER CONNECTION SPECIFIED CONDITION

        Item Content
        Tester Connection D36-15 (IMO) - B3-1 (E1)
        Tool Setting 2 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
        Fig 10: Waveform 1 Graph
        G05419602Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Waveform 2 (Reference)
        WAVEFORM REFERENCE

        Item Content
        Tester Connection D36-16 (IMI) - B3-1 (E1)
        Tool Setting 2 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
  4. CHECK ECM (for 1AR-FE) 
    1. Disconnect the B49 ECM connector and measure the resistance according to the value (s) in the table below.
      Fig 11: Waveform 2 Graph
      G04979972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 12: Identifying B49 ECM Connector
      G06122066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      ECU TERMINAL REFERENCE

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      B49-1 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    2. Reconnect the B49 ECM connector. Measure the voltage according to the value (s) in the table below.
      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D60-32 (IMO) - B49-1 (E1) BR - W-B Transponder key ECU output signal Ignition switch OFF Below 1 V
      D60-32 (IMO) - B49-1 (E1) BR - W-B Transponder key ECU output signal Ignition switch ON Waveform 1
      D60-31 (IMI) - B49-1 (E1) L - W-B Transponder key ECU input signal Ignition switch OFF Below 1 V
      D60-31 (IMI) - B49-1 (E1) L - W-B Transponder key ECU input signal Ignition switch ON Waveform 2

      If the result is not as specified, the ECM may have a malfunction.

    3. Inspect using an oscilloscope.
      1. Waveform 1 (Reference)
        TESTER CONNECTION SPECIFIED CONDITION

        Item Content
        Tester Connection D60-32 (IMO) - B49-1 (E1)
        Tool Setting 2 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
        Fig 13: Waveform 1 Graph
        G05419602Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Waveform 2 (Reference)
        WAVEFORM REFERENCE

        Item Content
        Tester Connection D60-31 (IMI) - B49-1 (E1)
        Tool Setting 2 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
scientia non olet · About LEMON Manuals