Pre-Crash Safety System Terminals Of Ecu

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Pre-Crash Safety. Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. CHECK SEAT BELT CONTROL ECU

Pre-Crash Safety System -- Terminals Of Ecu



CHECK SEAT BELT CONTROL ECU

Land Cruiser. Urj200, 202 Grj200 Vdj200.Pre-Crash Safety.Pre-Crash Safety System.Pre-Crash Safety System Terminals Of Ecu

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

    HINT:
    Check from the rear of the connector while it is connected to the seat belt control ECU.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E41-2 (MOR+) - E41-8 (PGND)
    		L - W-B
    		Passenger side seat belt motor power source line
    		Ignition switch ON
    		4 to 8.5 V
    E41-3 (MOL+) - E41-8 (PGND)
    		GR - W-B
    		Driver side seat belt motor power source line
    		Ignition switch ON
    		4 to 8.5 V
    E42-8 (IG1) - Body ground
    		G - Body ground
    		Seat belt control ECU power source line
    		Ignition switch ON
    		11 to 14 V
    E41-7 (+B) - Body ground
    		R - W-B
    		Seat belt control ECU power source line
    		Always
    		11 to 14 V
    E41-1 (MOR-) - Body ground
    		B - Body ground
    		Passenger side seat belt motor ground line
    		Ignition switch ON
    		4 to 8.5 V
    E41-4 (MOL-) - Body ground
    		W - Body ground
    		Driver side seat belt motor ground line
    		Ignition switch ON
    		4 to 8.5 V
    E41-5 (PBK+) - Body ground
    		G - Body ground
    		Passenger side buckle switch ground line
    		Always
    		Below 1 Ω
    E41-5 (PBK+) - E41-8 (PGND)
    		G - W-B
    		Passenger side buckle switch signal line
    		Ignition switch ON
    Front passenger side seat belt unfastened (Buckle switch off)
    		Waveform 1
    Ignition switch ON
    Front passenger side seat belt fastened (Buckle switchs on)
    E41-8 (PGND) - Body ground
    		W-B - Body ground
    		Seat belt control ECU ground line
    		Always
    		Below 1 Ω
    If the result is not as specified, the seat belt control ECU may have a malfunction.


  2. Inspect using an oscilloscope.



    1. Waveform 1 (Reference)


      Land Cruiser. Urj200, 202 Grj200 Vdj200.Pre-Crash Safety.Pre-Crash Safety System.Pre-Crash Safety System Terminals Of Ecu

      Terminal No. (Symbol)
      		E41-5 (PBK+) - E41-8 (PGND)
      Tool Setting
      		5 V/DIV., 20 ms./DIV.
      Switch Condition
      		Ignition switch ON
      Front passenger side seat belt unfastened (Buckle switch off)
      Ignition switch ON
      Front passenger side seat belt fastened (Buckle switch on)