THEFT DETERRENT SYSTEM TERMINALS OF ECU


  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


    1. Disconnect the main body ECU (multiplex network body ECU) connectors.

      A01JCE7E04

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L7-6 (LRCY) - Body ground G - Body ground Rear courtesy light switch LH and RH input Rear door LH and RH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      A-2 (FLCY) - Body ground - Front left door courtesy light switch input Front left door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      A-4 (FRCY) - Body ground - Front right door courtesy light switch input Front right door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      L7-19 (BCTY) - Body ground L - Body ground Back door courtesy light switch input Back door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      A-29 (ACC) - Body ground - Ignition power supply (ACC signal) Power switch on (ACC) → off 11 to 14 V → Below 1 V
      A-31 (ALTB) - Body ground - +B (power system alternator system) power supply Power switch off 11 to 14 V
      A-32 (IG) - Body ground - Ignition power supply (IG signal) Power switch on (IG) → off 11 to 14 V → Below 1 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω
      L8-3 (GND2) - Body ground* W-B - Body ground Ground Always Below 1 Ω

      *: w/ Intrusion Sensor

      Tech Tips

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the main body ECU (multiplex network body ECU) connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L8-8 (SSW1) - Body ground*1 G - Body ground Intrusion sensor cancel switch signal Intrusion sensor cancel switch on Below 1 V
      L8-8 (SSW1) - Body ground*1 G - Body ground Intrusion sensor cancel switch signal Intrusion sensor cancel switch off Pulse generation
      L8-12 (ISIF) - Body ground*1 V - Body ground Theft warning radar sensor (intrusion sensor) signal input No moving object detected by sensor 11 to 14 V
      L8-12 (ISIF) - Body ground*1 V - Body ground Theft warning radar sensor (intrusion sensor) signal input Moving object detected by sensor during arming preparation state or armed state Pulse generation
      L7-3 (HAZ) - Body ground Y - Body ground Turn signal flasher relay signal System in alarm sounding state Below 1 V
      L8-18 (SSCL)*1 - Body ground L - Body ground Theft warning siren drive

      Theft warning siren sounding

      (Theft deterrent system is in alarm sounding state)

      Pulse generation

      (Below 1 V ← → 12 V)
      A-19 (GPBS) - Body ground*1 - Glass breakage sensor drive Always (Back door glass and back window fix glass not broken) Below 1 V
      A-28 (HORN) - Body ground - Vehicle horn drive

      Vehicle horns sounding

      (Theft deterrent system is in alarm sounding state)

      Pulse generation

      (Below 1 V ← → 12 V)
      A-17 (SH)*2 - Body ground - Security horn drive

      Security horn sounding

      (Theft deterrent system is in alarm sounding state)

      Pulse generation

      (Below 1 V ← → 12 V)
      A-20 (HCTY) - Body ground - Engine courtesy switch input Engine hood open (ON) → closed (OFF) Below 1 Ω → 10 kΩ or higher
      A-23 (IND) - Body ground - Security indicator light up Security indicator light on (It lights up only for 27.5 sec. in alarm sounding state.) 3 to 6 V

      If the result is not as specified, the main body ECU (multiplex network body ECU) may have a malfunction.


      • *1: w/ Intrusion Sensor

      • *2: w/o Intrusion Sensor