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Home >> Infiniti >> 2009 >> M45 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (Theft Deterrent) >> Theft Deterrent System >> System Description

System Description

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. OUTLINE OF THEFT DETERRENT SYSTEM 
    1. The theft deterrent system is designed to deter vehicle break-ins and theft. If an attempted break-in or theft is detected, the vehicle horns and security horn will sound and the hazard warning lights will flash.
    2. The system detects an attempted break-in or theft when any of the following occurs: 1) the vehicle is forcibly entered, 2) the engine hood is forcibly opened, 3) the doors are unlocked without the use of a key, or 4) the cable from the negative (-) battery terminal is disconnected and reconnected.
    3. If the system enters the alarm sounding state, any unlocked doors will automatically lock.
    4. The system has 2 modes: active arming mode (refer to  1 for "ACTIVE ARMING MODE") and passive arming mode (refer to  2 for "PASSIVE ARMING MODE"). Passive arming mode can be turned on and off using the Techstream.
    5. Each mode has 4 states: disarmed state, arming preparation state, armed state and alarm sounding state.
      1. Disarmed state:
        • The alarm function is not operating.
        • The theft deterrent system is not operating.
      2. Arming preparation state:

        The theft deterrent system is not operating.

      3. Armed state:

        The theft deterrent system is operating.

      4. Alarm sounding state:

        The alarm function is operating (60 +/-5 seconds).

        Refer to table below for alarm method and time 

        THEFT DETERRENT SYSTEM ALARM METHOD AND TIME REFERENCE CHART

        Alarm Method Hazard Warning Light Blinking (cycle of flasher relay)
        Vehicle Horn Sounding (cycle of 0.4 seconds)
        Security Horn Sounding (cycle of 0.4 seconds)
        Headlight Flashing
        Taillight Flashing
        Room light Illuminating
        Security Indicator Illuminating
        Alarm Time 60 +/-5 seconds

        HINT:

        If, during the alarm sounding state, one of the doors is unlocked without using the proper key, a forced door lock signal will be output (refer to  3 for "FORCED DOOR LOCK CONTROL").

  2. FUNCTION OF MAIN COMPONENT 
    THEFT DETERRENT SYSTEM FUNCTION OF MAIN COMPONENT

    Function Outline
    Security indicator Informs driver of theft deterrent system status
    Security horn Sounds when attempted brake-in or theft is detected
    Taillight Taillights illuminate if system enters alarm sounding state when system is unset
    Hazard warning light Hazard warning lights begin flashing when attempted break-in or theft is detected
    Vehicle horns Sounds when attempted break-in or theft is detected
    Door courtesy light switch Detects door open status (open or closed)
    Door unlock detection switch Detects door unlock status
    Engine hood courtesy switch Detects engine hood open status (open or closed)
    Main body ECU Detects ignition switch condition (OFF, ON, ACC or engine running)
    Glass breakage sensor ECU* Glass breakage sensor ECU outputs alarm request signal to main body ECU when sound of glass breaking is detected
    HINT:
    *: w/ Glass Breakage Sensor
  3. SYSTEM FUNCTION 
    1. Disarmed state:
      • The alarm function is not operating.
      • The theft deterrent system is not operating.
    2. Arming preparation state:
      • The theft deterrent system is not operating.
    3. Arming state:
      • The theft deterrent system is operating.
    4. Alarm sounding state:
      • The alarm function is operating (60 +1-5 seconds).
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