Theft Deterrent System (For Hatchback) Terminals Of Ecu

Vehicle Interior. Yaris. Ncp93, 131
  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU

Theft Deterrent System (For Hatchback) -- Terminals Of Ecu



CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU

Yaris. Ncp93, 131.Theft Deterrent Keyless Entry.Engine Immobiliser System (For Sedan).Theft Deterrent System (For Hatchback)  Terminals Of Ecu


Text in Illustration
*1
Instrument Panel Junction Block Assembly
*2
Main Body ECU
  1. Remove the main body ECU (YARIS_NCP93 RM000003TOE00CX.html).

  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
    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-32 (IG) - Body ground
    None - Body ground
    Ignition switch power supply
    Ignition switch ON
    11 to 14 V
    Ignition switch off
    Below 1 V
    MB-29 (ACC) - Body ground
    None - Body ground
    ACC power supply
    Ignition switch ACC
    11 to 14 V
    Ignition switch off
    Below 1 V
    If the result is not as specified, there may be a malfunction in the wire harness.
  3. Install the main body ECU (YARIS_NCP93 RM000003TOC00CX.html).

  4. Measure the voltage and check for pules 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 switch input
    Front door LH open
    Below 1 V
    Front door LH closed
    Pulse generation
    D143-19 (FRCY) - Body ground
    Y - Body ground
    Front door RH courtesy switch input
    Front door RH open
    Below 1 V
    Front door RH closed
    Pulse generation
    D143-6 (LRCY) - Body ground*1
    G - Body ground
    Rear door courtesy light switch input
    Rear door LH or RH open
    Below 1 V
    Rear door LH and RH closed
    Pulse generation
    3D-35 (BCTY) - Body ground
    B - Body ground
    Back door courtesy light switch input
    Back door open
    Below 1 V
    Back door closed
    Pulse generation
    D143-7 (LSFL) - Body ground
    L - Body ground
    Front door LH unlock detection switch input
    Front door LH unlocked
    Below 1 V
    Front door LH locked
    Pulse generation
    D143-18 (LSFR) - Body ground
    LG - Body ground
    Front door RH unlock detection switch input
    Front door RH unlocked
    Below 1 V
    Front door RH locked
    Pulse generation
    3D-24 (LSR) - Body ground*1
    Y - Body ground
    Rear door LH unlock detection switch input
    Rear door LH or RH unlocked
    Below 1 V
    Rear door LH and RH locked
    Pulse generation
    3D-25 (LSR) - Body ground*1
    V - Body ground
    Rear door RH unlock detection switch input
    Rear door RH or LH unlocked
    Below 1 V
    Rear door RH and LH locked
    Pulse generation
    D144-22 (IND) - Body ground
    SB - Body ground
    Theft warning indicator light signal
    Theft warning indicator light illuminates (It illuminates only for 57 sec. in alarm sounding state.)
    3 V to 10 V
    D144-5 (HCTY) - Body ground
    GR - Body ground
    Engine hood courtesy switch input
    Engine hood open
    Below 1 V
    Engine hood closed
    Pulse generation
    3C-19 (HORN) - Body ground
    LG - Body ground
    Vehicle horn signal
    Vehicle horn sounding (Theft deterrent system in alarm sounding state)
    Pulse generation
    Vehicle horn not sounding (Theft deterrent system in armed state)
    11 to 14 V
    3C-20 (SHRN) - Body ground
    GR - Body ground
    Security horn signal
    Security horn sounding (Theft deterrent system in alarm sounding state)
    Pulse generation
    Security horn not sounding (Theft deterrent system in armed state)
    11 to 14 V
    1. *1: for 5 Door