Key Reminder Warning System (For Sedan) Terminals Of Ecu

Vehicle Interior. Yaris. Ncp93, 131
Door Lock. Yaris. Ncp93, 131

  1. CHECK COMBINATION METER ASSEMBLY

  1. CHECK MAIN BODY ECU

Key Reminder Warning System (For Sedan) -- Terminals Of Ecu



CHECK COMBINATION METER ASSEMBLY


  1. Using the tester probes, touch the terminals from the back of the vehicle wire harness connectors, and measure the voltages and resistances of each terminal.


    Yaris. Ncp93, 131.Door Lock.Power Door Lock Control System (For Sedan).Key Reminder Warning System (For Sedan) Terminals Of Ecu


    Standard:
    Symbols
    (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    IG2 (D1-1) - Body ground
    		B - Body ground
    		Ignition switch signal
    		Ignition switch OFF → ON
    		Below 1 V → 11 to 14 V
    ECUB (D1-2) - Body ground
    		L - Body ground
    		Battery
    		Always
    		11 to 14 V
    CANH (D1-20) - Body ground
    		G - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    CANL (D1-21) - Body ground
    		W - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    ET (D1-24) - Body ground
    		BR - Body ground
    		Ground
    		Always
    		Below 1 Ω

CHECK MAIN BODY ECU


  1. Using the tester probes, touch the terminals from the back of the vehicle wire harness connectors, and measure the voltages and resistances of each terminal.


    Yaris. Ncp93, 131.Door Lock.Power Door Lock Control System (For Sedan).Key Reminder Warning System (For Sedan) Terminals Of Ecu


    Standard:
    Symbols
    (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    KSW (4D-7) - Body ground
    		Y - Body ground
    		Key unlock warning switch input
    		Key inserted →
    Key removed from ignition key cylinder
    		Below 1 V → 11 to 14 V
    GND1 (4E-17) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    BECU (4B-30) - Body ground
    		L - Body ground
    		Battery
    		Always
    		11 to 14 V
    DCTY (4A-21) - Body ground
    		R - Body ground
    		Driver door courtesy switch input
    		Driver door
    closed → open
    		11 to 14 V → Below 1 V
    CANL (D33-22) - Body ground
    		W - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    CANH (D33-23) - Body ground
    		R - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation