THEFT DETERRENT SYSTEM TERMINALS OF ECU


  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A00YSXRC15
    *A Main body ECU (multiplex network body ECU) with 3 connectors - -
    *1 Main body ECU (multiplex network body ECU) - -
    *a 3 connectors - -

    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.


    2. Connect the instrument panel junction block assembly connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A-11 (GND1) - Body ground None - Body ground Ground Always Below 1 Ω
      A-29 (ACC) - Body ground None - Body ground ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      A-30 (BECU) - Body ground None - Body ground Battery power supply Always 11 to 14 V
      A-32 (IG) - Body ground None - Body ground IG power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      A-2 (FLCY) - Body ground None - Body ground Front door courtesy light switch assembly LH input signal Front door LH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      G78-19 (FRCY) - Body ground L - Body ground Front door courtesy light switch assembly RH input signal Front door RH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      G78-24 (LCTY) - Body ground

      W*1 - Body ground

      SB*2 - Body ground

      		 Rear door courtesy light switch assembly LH input signal Rear door LH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      G78-6 (RCTY) - Body ground Y - Body ground Rear door courtesy light switch assembly RH input signal Rear door RH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      A-20 (BCTY) - Body ground None - Body ground Back door courtesy light switch signal Back door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      G79-5 (HCTY) - Body ground R - Body ground Engine hood courtesy switch input signal Engine hood open (OFF) → closed (ON) 10 kΩ or higher → Below 1 Ω

      *1: for LHD

      *2: for RHD

    4. Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.


    5. Measure the voltage according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G78-7 (LSFL) - Body ground B - Body ground Front door LH unlock detection switch input signal Front door LH unlocked Below 1 V
      Ignition switch off, all doors closed and front door LH locked Pulse generation
      G78-18 (LSFR) - Body ground P - Body ground Front door RH unlock detection switch input signal Front door RH unlocked Below 1 V
      Ignition switch off, all doors closed and front door RH locked Pulse generation
      3E-32 (LSR) - Body ground Y - Body ground Rear door LH unlock detection switch input signal Rear door LH unlocked Below 1 V
      Ignition switch off, all doors closed and rear door LH locked Pulse generation
      3C-41 (LSR) - Body ground Y - Body ground Rear door RH unlock detection switch input signal Rear door RH unlocked Below 1 V
      Ignition switch off, all doors closed and rear door RH locked Pulse generation
      3D-53 (SH) - Body ground*4 V - Body ground Security horn drive Security horn sounding (Theft deterrent system is in alarm sounding state) Pulse generation (Below 1 V ←→ 11 to 14 V)
      G79-18 (SSCL) - Body ground*1 R - Body ground Theft warning siren drive Theft warning siren sounding (Theft deterrent system is in alarm sounding state) Pulse generation (Below 1 V ←→ 11 to 14 V)
      G79-8 (SSW1) - Body ground*2 Y - Body ground Intrusion sensor cancel switch signal Intrusion sensor cancel switch on Below 1 V
      Intrusion sensor cancel switch off Pulse generation
      G79-12 (ISIF) - Body ground*2 GR - Body ground Intrusion sensor (theft warning ultrasonic sensor) signal input No moving object detected by sensor 11 to 14 V
      Moving object detected by sensor during arming preparation state or armed state Pulse generation
      G79-6 (GCS) - Body ground*3 P - Body ground Communication line between main body ECU (multiplex network body ECU) and tilt sensor

      • Theft deterrent system changes from armed preparation state to armed state.

      • The tilt sensor detects pitch angle of vehicle inclination when theft deterrent system is in armed state.

      		 Pulse generation
      3D-38 (GCS) - Body ground*5 R - Body ground Glass breakage sensor signal Glass breakage sensor normal Below 2 V
      Glass breakage sensor malfunctioning 4.5 to 14 V
      3B-36 (HORN) - Body ground LG - Body ground Vehicle horn drive Vehicle horns sounding (Theft deterrent system is in alarm sounding state) Pulse generation (Below 1 V ←→ 11 to 14 V)

      *1: w/ Theft Warning Siren

      *2: w/ Intrusion Sensor

      *3: w/ Tilt Sensor

      *4: w/ Security Horn Assembly

      *5: w/ Glass Breakage Sensor