THEFT DETERRENT SYSTEM TERMINALS OF ECU


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


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

      A003RRTE01

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      MB-29 (ACC) - Body ground - ACC power supply Power switch on (ACC) → off 11 to 14 V → Below 1 V
      MB-32 (IG) - Body ground - IG power supply Power switch on (IG) → off 11 to 14 V → Below 1 V
      MB-31 (ALTB) - Body ground - Battery power supply Power switch off 11 to 14 V
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      E121-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      MB-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
      MB-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
      E120-6 (RCTY) - Body ground LG - Body ground Rear courtesy light switch RH input Rear door RH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      E120-23 (LCTY) - Body ground SB - Body ground Rear courtesy light switch LH input Rear door LH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      E120-19 (BCTY) - Body ground LG - Body ground Back door courtesy light switch input Back door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      MB-20 (HCTY) - Body ground - Engine hood courtesy switch input Engine hood open (ON) → closed (OFF) Below 1 Ω → 10 kΩ or higher

      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 according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E120-18 (LSFR) - Body ground LG - Body ground Driver door lock position switch input Driver door unlock → lock 11 to 14 V
      E120-7 (LSFL) - Body ground Y - Body ground Front passenger door lock position switch input Front passenger door unlock → lock 11 to 14 V
      2D-25 (LSR) - Body ground Y - Body ground Rear left door lock position switch input Rear left door unlock → lock 11 to 14 V
      2B-29 (LSR) - Body ground Y - Body ground Rear right door lock position switch input Rear right door unlock → lock 11 to 14 V
      E121-8 (SSW1) - Body ground G - Body ground Intrusion sensor cancel switch signal Intrusion sensor cancel switch on Below 1 V
      E121-8 (SSW1) - Body ground G - Body ground Intrusion sensor cancel switch signal Intrusion sensor cancel switch off Pulse generation
      E121-12 (ISIF) - Body ground V - Body ground Intrusion sensor (theft warning radar sensor) signal input No moving object detected by sensor 11 to 14 V
      E121-12 (ISIF) - Body ground V - Body ground Intrusion sensor (theft warning radar sensor) signal input Moving object detected by sensor during arming preparation state or armed state Pulse generation
      E120-3 (HAZ) - Body ground Y - Body ground Turn signal flasher relay signal System in alarm sounding state Below 1 V
      E121-18 (SSCL) - 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)
      E120-17 (GBS) - Body ground V - Body ground Glass breakage sensor drive Always Below 1 V
      2A-51 (IND) - Body ground Y - 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) or instrument panel junction block assembly may have a malfunction.