Pre-Crash Safety System Terminals Of Ecu

  1. CHECK SEAT BELT CONTROL ECU

  1. CHECK DRIVING SUPPORT ECU

Pre-Crash Safety System -- Terminals Of Ecu



CHECK SEAT BELT CONTROL ECU

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Pre-Crash Safety.Pre-Crash Safety System.Pre-Crash Safety System Terminals Of Ecu

  1. Disconnect the G117 and G118 ECU connectors.

  2. Measure the voltage and resistance according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    G117-7 (+B) - Body ground
    		W - Body ground
    		Battery
    		Always
    		11 to 14 V
    G117-8 (PGND) - Body ground
    		W-B - Body ground
    		Body ground
    		Always
    		Below 1 Ω
    G118-8 (IG1) - Body ground
    		G - Body ground
    		Seat belt control ECU power supply
    		Ignition switch ON
    		11 to 14 V
    Ignition switch off
    		Below 1 V
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the G117 and G118 ECU connectors.



  4. Measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    G117-2 (MOR+) - Body ground
    		B - Body ground
    		Seat belt motor RH power supply
    		Ignition switch ON
    		4.0 to 8.5 V
    Ignition switch off
    		Below 1 V
    G117-1 (MOR-) - Body ground
    		LG - Body ground
    		Seat belt motor RH power supply
    		Ignition switch ON
    		4.0 to 8.5 V
    Ignition switch off
    		Below 1 V
    G117-3 (MOL+) - Body ground
    		R - Body ground
    		Seat belt motor LH power supply
    		Ignition switch ON
    		4.0 to 8.5 V
    Ignition switch off
    		Below 1 V
    G117-4 (MOL-) - Body ground
    		G - Body ground
    		Seat belt motor LH power supply
    		Ignition switch ON
    		4.0 to 8.5 V
    Ignition switch off
    		Below 1 V
    G118-5 (PBK+) - G118-6 (PBK-)
    		G - R*1
    V - P*2
    		Front seat inner belt (for passenger side) signal
    		Ignition switch ON, front seat belt (for passenger side) fastened
    		Pulse generation
    (See waveform 1)
    Ignition switch ON, front seat belt (for passenger side) unfastened
    		Pulse generation
    (See waveform 2)
    G118-6 (PBK-) - Body ground
    		R - Body ground*1
    P - Body ground*2
    		Front seat inner belt (for passenger side) signal
    		Always
    		Below 1 Ω
    1. *1: for LHD
    2. *2: for RHD
    If the result is not as specified, the ECU may be malfunctioning.


      Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Pre-Crash Safety.Pre-Crash Safety System.Pre-Crash Safety System Terminals Of Ecu

    1. Using an oscilloscope, check waveform 1.

      Measurement Condition
      Item
      		Content
      Tester Connection
      		G118-5 (PBK+) - G118-6 (PBK-)
      Tool Setting
      		2 V/DIV., 20 ms/DIV.
      Vehicle Condition
      		Ignition switch ON, front seat belt (for passenger side) fastened


      2. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Pre-Crash Safety.Pre-Crash Safety System.Pre-Crash Safety System Terminals Of Ecu

    2. Using an oscilloscope, check waveform 2.

      Measurement Condition
      Item
      		Content
      Tester Connection
      		G118-5 (PBK+) - G118-6 (PBK-)
      Tool Setting
      		2 V/DIV., 20 ms/DIV.
      Vehicle Condition
      		Ignition switch ON, front seat belt (for passenger side) unfastened

CHECK DRIVING SUPPORT ECU

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Pre-Crash Safety.Pre-Crash Safety System.Pre-Crash Safety System Terminals Of Ecu

NOTICE:
  1. As disconnecting the connector to perform inspections may cause DTCs to be stored, clear DTCs after performing inspections.
  2. As the connector may be damaged if a load of more than 10 kg (22 lb) is applied it, do not apply any more load than necessary to the connector.

  1. Disconnect the G119 ECU connector.

  2. Measure the voltage and resistance according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    G119-30 (B) - Body ground
    		G - Body ground
    		Power supply
    		Ignition switch ON
    		11 to 14 V
    Ignition switch off
    		Below 1 V
    G119-25 (GND) - Body ground
    		BR - Body ground
    		Body ground
    		Always
    		Below 1 Ω
    G119-5 (PBSW) - Body ground
    		V - Body ground
    		Pre-crash brake cancel switch assembly signal
    		Pre-crash brake cancel switch assembly on
    		Below 1 Ω
    Pre-crash brake cancel switch assembly off
    		10 kΩ or higher
    If the result is not as specified, there may be a malfunction on the wire harness side.