Key Reminder Warning System (For Hatchback) Terminals Of Ecu

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

  1. CHECK MAIN BODY ECU AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

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



CHECK MAIN BODY ECU AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

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


Text in Illustration
*A
Main Body ECU 1 Connector Type
-
-
*1
Instrument Panel Junction Block Assembly
*2
Main Body ECU

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


Text in Illustration
*A
Main Body ECU 2 Connector Type
-
-
*1
Instrument Panel Junction Block Assembly
*2
Main Body ECU

  1. Remove the main body ECU from the instrument panel junction block assembly.

  2. Disconnect the D143 main body ECU connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MB-11 (GND1) - Body ground
    		None - Body ground
    		Ground
    		Always
    		Below 1 Ω
    MB-30 (BECU) - Body ground
    		None - Body ground
    		Battery power supply
    		Always
    		11 to 14 V
    MB-29 (ACC) - Body ground
    		None - Body ground
    		ACC power supply
    		Ignition switch on (ACC)
    		11 to 14 V
    MB-32 (IG) - Body ground
    		None - Body ground
    		Ignition switch power supply
    		Ignition switch on (IG)
    		11 to 14 V
    D143-17 (KSW) - Body ground
    		Y - Body ground
    		Unlock warning switch input
    		No Key in ignition key cylinder (off)
    		10 kΩ or higher
    Key inserted ignition key cylinder (on)
    		Below 1 Ω

  4. Install the main body ECU to the instrument panel junction block assembly.

  5. Reconnect the D143 main body ECU connector.

  6. Measure the voltage and check for pulse according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    3D-36 (FLCY) - Body ground
    		L - Body ground
    		Front door LH courtesy light switch input
    		Front door LH open
    		Below 1 V
    Front door LH closed
    		Pulse generation
    D143-17 (KSW) - Body ground
    		Y - Body ground
    		Unlock warning switch input
    		No Key in ignition key cylinder (off)
    		11 to 14 V
    Key inserted ignition key cylinder (on)
    		Below 1 V