THEFT DETERRENT SYSTEM TERMINALS OF ECU

  1. B332799C15

    *A

    Main body ECU (multiplex network body ECU) with 3 connectors

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    *1

    Main body ECU (multiplex network body ECU)

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    *a

    3 connectors

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

    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 (GPBS) - 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