THEFT DETERRENT SYSTEM TERMINALS OF ECU


  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND COWL SIDE JUNCTION BLOCK LH

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    Text in Illustration
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH Click here.

    2. Connect the cowl side junction block LH 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 Engine switch on (ACC) 11 to 14 V
      Engine switch off Below 1 V
      A-30 (BECU) - Body ground None - Body ground Battery power supply Always 11 to 14 V
      A-31 (ALTB) - Body ground None - Body ground Battery power supply Always 11 to 14 V
      A-32 (IG) - Body ground None - Body ground IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      N13-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      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
      A-4 (FRCY) - Body ground None - 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
      N11-3 (LCTY) - Body ground G - 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
      N12-6 (RCTY) - Body ground G - 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
      N12-19 (LGCY) - Body ground* P - Body ground Luggage door courtesy light switch signal Luggage compartment door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      A-20 (HCTY) - Body ground None - Body ground Engine hood courtesy switch input signal Engine hood open (OFF) → closed (ON) 10 kΩ or higher → Below 1 Ω

      • *: w/o Power Trunk Lid System

    4. Install the main body ECU (multiplex network body ECU) to the cowl side junction block LH Click here.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N12-7 (LSFL) - Body ground SB - Body ground Front door LH unlock detection switch input signal Front door LH unlocked Below 1 V
      Engine switch off, all doors closed and front door LH locked Pulse generation
      N12-18 (LSFR) - Body ground SB - Body ground Front door RH unlock detection switch input signal Front door RH unlocked Below 1 V
      Engine switch off, all doors closed and front door RH locked Pulse generation
      5C-30 (LSWL) - Body ground

      B - Body ground*2

      GR - Body ground*3

      		 Rear door LH unlock detection switch input signal Rear door LH unlocked Below 1 V
      Engine switch off, all doors closed and rear door LH locked Pulse generation
      N13-2 (LSWR) - Body ground

      B - Body ground*2

      P - Body ground*3

      		 Rear door RH unlock detection switch input signal Rear door RH unlocked Below 1 V
      Engine switch off, all doors closed and rear door RH locked Pulse generation
      5A-46 (SH) - Body ground*6 R - 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)
      N13-18 (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)
      N13-11 (SSW1) - Body ground*4 B - Body ground Intrusion sensor cancel switch signal Intrusion sensor cancel switch on Below 1 V
      Intrusion sensor cancel switch off Pulse generation
      N13-12 (ISIF) - Body ground*4 P - 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
      N13-6 (GCS) - Body ground*5 GR - 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
      5D-10 (HORN) - Body ground P - 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: for LHD

      • *3: for RHD

      • *4: w/ Intrusion Sensor

      • *5: w/ Tilt Sensor

      • *6: w/ Security Horn Assembly