Lighting System (For Sedan) Terminals Of Ecu

Vehicle Interior. Yaris. Ncp93, 131
Lighting (Int). Yaris. Ncp93, 131

  1. CHECK MAIN BODY ECU

Lighting System (For Sedan) -- Terminals Of Ecu



CHECK MAIN BODY ECU

Yaris. Ncp93, 131.Lighting (Int).Lighting System (For Sedan).Lighting System (For Sedan) Terminals Of Ecu


Yaris. Ncp93, 131.Lighting (Int).Lighting System (For Sedan).Lighting System (For Sedan) Terminals Of Ecu

  1. Disconnect the 4B and 4E main body ECU connectors.

  2. Measure the resistance and voltage between each terminal of the wire harness side connectors and body ground.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    4B-30 (BECU) - Body ground
    		L - Body ground
    		Battery power supply
    		Always
    		11 to 14 V
    4E-17 (GND1) - 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.

  3. Reconnect the main body ECU connectors.

  4. Measure the voltage between each terminal of the wire harness side connectors and body ground.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    4A-5 (RRCY) - Body ground
    		G - Body ground
    		Rear LH door courtesy light switch input
    		Rear LH door closed
    		11 to 14 V
    Rear LH door open
    		Below 1 V
    4A-7 (LGCY) - Body ground
    		SB - Body ground
    		Luggage compartment courtesy switch input
    		Luggage compartment door closed
    		11 to 14 V
    Luggage compartment door open
    		Below 1 V
    4A-20 (RRCY) - Body ground
    		L - Body ground
    		Rear RH door courtesy light switch input
    		Rear RH door closed
    		11 to 14 V
    Rear RH door open
    		Below 1 V
    4A-21 (DCTY) - Body ground
    		R - Body ground
    		Driver door courtesy light switch input
    		Driver door closed
    		11 to 14 V
    Driver door open
    		Below 1 V
    4A-24 (PCTY) - Body ground
    		L - Body ground
    		Passenger door courtesy light switch input
    		Front passenger door closed
    		11 to 14 V
    Front passenger door open
    		Below 1 V
    4K-2 (ILE) - Body ground
    		P - Body ground
    		Illumination signal (To room light assembly)
    		Room light switch in DOOR position and room light assembly comes on
    		11 to 14 V
    Room light switch in OFF position and room light assembly turns off
    		Below 1 V
    D33-5 (LSWP) - Body ground
    		L - Body ground
    		Passenger side door unlock detection switch input
    		Passenger side door UNLOCK
    		Below 1 V
    Passenger side door LOCK
    		11 to 14 V
    D33-21 (LSWD) - Body ground
    		L - Body ground
    		Driver side door unlock detection switch input
    		Driver side door UNLOCK
    		Below 1 V
    Driver side door LOCK
    		11 to 14 V
    D33-24 (LSR) - Body ground
    		BE - Body ground
    		Rear LH or rear RH door unlock detection switch input
    		Rear LH or rear RH door UNLOCK
    		Below 1 V
    Rear LH or rear RH door LOCK
    		11 to 14 V
    If the result is not as specified, the main body ECU may have a malfunction.