LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2008 >> LS 600hL >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Wireless Door Lock Control System >> Terminals Of Ecu

Terminals Of Ecu

  1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) 
    Fig 1: Identifying Main Body ECU Connector Terminals (Driver Side Junction Block)
    G04943821Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DA, DD, DF, L12 and L13 ECU connectors.
    2. Measure the resistance and voltage according to value(s) in the table below
      RESISTANCE AND VOLTAGE SPECIFICATION

      Terminal No (Symbols) Wiring Color Terminal Description Condition Specified Condition
      DA-40 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DA-41 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DF-1 (ACC) - DA-40 (GND2) B - W-B ACC power supply Power switch OFF Below 1 V
      Power switch ON (ACC) 11 to 14 V
      DF-1 (IG) - DA-40 (GND2) B - W-B IG power supply Power switch OFF Below 1 V
      Power switch ON (IG) 11 to 14 V
      L13-24 (DCTY) - Body ground W - Body ground Driver side door courtesy light switch input Driver side door open Below 1 Ω
      Driver side door closed 10 kΩ or higher
      L12-21 (PCTY) - Body ground L - Body ground Passenger side door courtesy light switch input Passenger side door open Below 1 Ω
      Passenger side door closed 10 kΩ or higher
      L12-7 (RCTY) - Body ground R - Body ground Rear RH side door courtesy light switch input Rear side door RH open Below 1 Ω
      Rear side door RH closed 10 kΩ or higher
      DD-12 (LCTY) - Body ground L - Body ground Rear LH side door courtesy light switch input Rear side door LH open Below 1 Ω
      Rear side door LH closed 10 kΩ or higher

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

    3. Reconnect the DA, DD, DF, L12 and L3 ECU connectors
    4. Measure the voltage according to the value(s) in the table below.
      VOLTAGE SPECIFICATION

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L11-14 (HAZ) - Body ground O - Body ground Turn signal light drive Hazard warning signal switch ON Pulse generation
      Hazard warning signal switch OFF Below 1 V

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

  2. CHECK FRONT MULTIPLEX NETWORK LIGHT ECU (FRONT CONTROLLER) 
    Fig 2: Identifying A51, A50, A52 And B14 Connector Terminals
    G04951556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A50 and A52 ECU connectors
    2. Measure the resistance and voltage according to the value(s) in the table below.
      RESISTANCE AND VOLTAGE SPECIFICATION

      Terminal No (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A50-2 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A52-1 (BATB) - Body ground P - Body ground Power supply Always 11 to 14 V
      A52-5 (ALTB) - Body ground L - Body ground Power supply Always 11 to 14 V

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

    3. Reconnect the A50 and A52 ECU connectors.
    4. Measure the voltage according to the value(s) in the table below
      VOLTAGE SPECIFICATION

      Terminal No (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A52-14 (BZR) - Body ground B - Body ground Wireless door lock buzzer output Wireless door lock buzzer ON 11 to 14 V
      Wireless door lock buzzer OFF Below 1 V

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

  3. CHECK POWER TRUNK LID CONTROL ECU 
    Fig 3: Identifying S43 Connector Terminals
    G05783083Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the S43 ECU connector.
    2. Measure the resistance and voltage according to the value(s) in the table below
      RESISTANCE AND VOLTAGE SPECIFICATION

      Terminal No (Symbols) Wiring Color Terminal Description Condition Specified Condition
      S43-11 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      S43-10 (ECUB) - S43-11 (GND) B - W-B Power supply Always 11 to 14 V
      S43-12 (B) - S43-11 (GND) O - W-B Power supply Always 11 to 14 V

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

    3. Reconnect the S43 ECU connector
    4. Measure the voltage according to the value(s) in the table below
      VOLTAGE SPECIFICATION

      Terminal No (Symbols) Wiring Color Terminal Description Condition Specified Condition
      S43-22 (LCTY) - S43-11 (GND) G - W-B Luggage compartment door courtesy light switch output Luggage compartment door open Pulse generation
      Luggage compartment door closed Below 1 V

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

    5. Using an oscilloscope, check the waveform

      Waveform (Reference) 

      WAVEFORM REFERENCE

      Item Content
      Terminal No (Symbols) S43-22 (LCTY) - S43-11 (GND)
      Tool Setting 5 V/DIV, 20 ms/DIV
      Condition Luggage compartment door open
  4. CHECK CERTIFICATION ECU 
    Fig 4: Identifying Waveform
    G05783084Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 5: Identifying L15 And L16 Connector Terminals
    G04944572Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L15 and L16 ECU connectors
    2. Measure the resistance and voltage according to the value(s) in the table below
      RESISTANCE AND VOLTAGE SPECIFICATION

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L15-1 (+B1) - L15-17 (E) L - W-B Battery power supply Always 11 to 14 V
      L15-18 (IG) - L15-17 (E) L - W-B IG power supply Power switch ON (IG) 11 to 14 V
      Power switch OFF Below 1 V
      L16-18 (BZR3) - L16-19 (BZRG) L - W-B Wireless door lock buzzer controller control signal Wireless door lock buzzer controller ON → OFF Below 12 8 kΩ → 12 8 kΩ or higher

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

    3. Reconnect the L15 ECU connector
    4. Measure the voltage according to the value(s) in the table below
      VOLTAGE SPECIFICATION

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-39 (RSSI) - L15-17 (E) W - W-B Door control receiver output signal Power switch OFF, all doors closed and transmitter switch not pressed 11 to 14 V
      Power switch OFF, all doors closed and transmitter switch pressed Below 1 V
      L15-38 (RDA) - L15-17 (E) R - W-B Door control receiver output signal Power switch OFF, all doors closed and transmitter switch not pressed 4 6 to 5 4 V
      Power switch OFF, all doors closed and transmitter switch pressed Pulse generation
      L15-37 (ASEL) - L15-17 (E) L - W-B Change of door control receiver (door to luggage compartment) All doors closed and transmitter LUGGAGE switch not pressed Below 1 V
      All doors closed and transmitter LUGGAGE switch pressed 4 6 to 5 4 V
      L15-29 (RCO) - L15-17 (E) G - W-B Supply battery to door control receiver Power switch OFF, all doors closed and transmitter switch pressed 4 6 to 5 4 V

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

scientia non olet · About LEMON Manuals