THEFT DETERRENT SYSTEM(except 5L-E) TERMINALS OF ECU


  1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B001CIBC01
    *A Main Body ECU (Multiplex Network Body ECU) with 3 connectors *B for LHD
    *C for RHD - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    B001HRGC02
    *A Main Body ECU (Multiplex Network Body ECU) with 2 connectors *B for LHD
    *C for RHD - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.

      Click here

    2. Connect the driver side 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-32 (IG) - Body ground - Ignition power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      A-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-30 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω

    4. Install the main body ECU (multiplex network body ECU).

      Click here

    5. Measure the voltage and check for pulses according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G218-6 (FLCY) - Body ground R - Body ground Front door courtesy light switch assembly LH signal Front door LH open Below 1 V
      Front door LH closed 11 to 14 V
      G218-27 (FRCY) - Body ground B - Body ground Front door courtesy light switch assembly RH signal Front door RH open Below 1 V
      Front door RH closed 11 to 14 V
      2N-30 (RCTY) - Body ground*1, *3 R - Body ground Rear door courtesy light switch assembly RH signal Rear door RH open Below 1 V
      Rear door RH closed 11 to 14 V
      2P-23 (RCTY) - Body ground*2, *3 R - Body ground Rear door courtesy light switch assembly RH signal Rear door RH open Below 1 V
      Rear door RH closed 11 to 14 V
      2Q-33 (LCTY) - Body ground*1, *3 V - Body ground Rear door courtesy light switch assembly LH signal Rear door LH open Below 1 V
      Rear door LH closed 11 to 14 V
      2O-15 (LCTY) - Body ground*2, *3 V - Body ground Rear door courtesy light switch assembly LH signal Rear door LH open Below 1 V
      Rear door LH closed 11 to 14 V
      2Q-27 (BCTY) - Body ground*1 G - Body ground Back door courtesy light switch assembly signal Back door open Below 1 V
      Back door close 11 to 14 V
      2N-27 (BCTY) - Body ground*2 G - Body ground Back door courtesy light switch assembly signal Back door open Below 1 V
      Back door close 11 to 14 V
      G216-27 (GCTY) - Body ground*7 V - Body ground Glass hatch courtesy switch input Glass hatch open Below 1 V
      Glass hatch close 11 to 14 V
      G218-29 (L2) - Body ground GR - Body ground Driver side door key-linked lock input Driver side door key cylinder in lock position Below 1 V
      Ignition switch off, all doors closed and driver side door key cylinder in neutral position 11 to 14 V
      G218-2 (UL3) - Body ground LG - Body ground Driver side door key-linked unlock input Driver side door key cylinder in unlock position Below 1 V
      Ignition switch off, all doors closed and driver side door key cylinder in neutral position 11 to 14 V
      G216-3 (ACTG) - Body ground*4 R - Body ground Collision door lock release signal Collision door lock release function does not operate

      Below 2 V*5

      7.3 to 10.1 V*6
      Collision door lock release function operates Below 1 V
      2N-3 (ACT+) - Body ground L - Body ground Door lock motor lock drive output Driver side door control switch not pushed and driver side door key cylinder in neutral position Below 1 V
      Lock side of driver side door control switch pushed, or driver side door key cylinder in lock position 11 to 14 V
      2Q-9 (ACT+) - Body ground*1, *3 L - Body ground Door lock motor lock drive output Driver side door control switch not pushed and driver side door key cylinder in neutral position Below 1 V
      Lock side of driver side door control switch pushed, or driver side door key cylinder in lock position 11 to 14 V
      2P-9 (ACT+) - Body ground*2 L - Body ground Door lock motor lock drive output Driver side door control switch not pushed and driver side door key cylinder in neutral position Below 1 V
      Lock side of driver side door control switch pushed, or driver side door key cylinder in lock position 11 to 14 V
      2N-4 (ACTD) - Body ground G - Body ground Driver side door lock motor unlock drive output Driver side door control switch not pushed and driver side door key cylinder in neutral position Below 1 V
      Unlock side of driver side door control switch pushed, or driver side door key cylinder in unlock position 11 to 14 V
      2N-5 (ACT-) - Body ground W - Body ground Door lock motor unlock drive output Driver side door control switch not pushed and driver side door key cylinder in neutral position Below 1 V
      Unlock side of driver side door control switch pushed, or driver side door key cylinder in unlock position 11 to 14 V
      2Q-8 (ACT-) - Body ground*1, *3 W - Body ground Door lock motor unlock drive output Driver side door control switch not pushed and driver side door key cylinder in neutral position Below 1 V
      Unlock side of driver side door control switch pushed, or driver side door key cylinder in unlock position 11 to 14 V
      2P-8 (ACT-) - Body ground*2 W - Body ground Door lock motor unlock drive output Driver side door control switch not pushed and driver side door key cylinder in neutral position Below 1 V
      Unlock side of driver side door control switch pushed, or driver side door key cylinder in unlock position 11 to 14 V
      2O-41 (LSFR) - Body ground G - Body ground Front door unlock detection switch RH signal Front door RH unlocked Below 1 V
      Ignition switch off, all doors closed and front door RH locked 11 to 14 V
      2N-12 (LSFL) - Body ground G - Body ground Front door unlock detection switch LH signal Front door LH unlocked Below 1 V
      Ignition switch off, all doors closed and front door LH locked 11 to 14 V
      2Q-26 (LSWL) - Body ground*1, *3 B - Body ground Rear door unlock detection switch LH signal Rear door LH unlocked Below 1 V
      Ignition switch off, all doors closed, rear door LH locked 11 to 14 V
      2O-38 (LSWL) - Body ground*2, *3 B - Body ground Rear door unlock detection switch LH signal Rear door LH unlocked Below 1 V
      Ignition switch off, all doors closed, rear door LH locked 11 to 14 V
      G216-2 (LSWR) - Body ground*3 V - Body ground Rear door unlock detection switch RH signal Rear door RH unlocked Below 1 V
      Ignition switch off, all doors closed, rear door RH locked 8 to 12 V
      G218-17 (LSWB) - Body ground SB - Body ground Back door unlock detection switch signal Back door unlocked Below 1 V
      Ignition switch off, all doors closed, back door locked 11 to 14 V
      G218-15 (IND) - Body ground*8 G - Body ground Security indicator light signal Security indicator illuminates 3 to 10 V
      G218-11 (HCTY) - Body ground B - Body ground Engine hood courtesy switch Engine hood open Below 1 V
      Ignition switch off, all doors closed and engine hood closed 11 to 14 V
      G216-18 (SSCL) - Body ground*9 G - Body ground Theft warning siren assembly drive Theft warning siren assembly sounding (Theft deterrent system is in alarm sounding state) Pulse generation (Below 1 V ←→ 11 to 14 V)
      G216-13 (SSW1) - Body ground*10 L - Body ground Intrusion sensor cancel switch signal Intrusion sensor cancel switch on Below 1 V
      Intrusion sensor cancel switch off Pulse generation
      G216-12 (ISIF) - Body ground*10 SB - Body ground Intrusion and tilt sensor (theft warning ultrasonic sensor) signal

      • No moving object detected by sensor

      • Vehicle tilt not detected

      		 11 to 14 V
      Theft deterrent system changes from disarmed state to armed preparation state

      Pulse generation

      (See Waveform 1)
      G218-7 (GPBS) - Body ground*11 R - Body ground Glass breakage sensor signal Glass breakage sensor normal Below 2 V
      Glass breakage sensor malfunctioning 4.5 to 14 V
      2M-29 (HORN) - Body ground G - 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)
      2M-27 (SH) - Body ground*12 GR- Body ground Security horn signal Security horn sounding (theft warning system in alarm sounding state) Pulse generation (Below 1 V ←→ 11 to 14 V)
      Security horn not sounding (theft warning system in armed state) 11 to 14 V

      *1: for LHD

      *2: for RHD

      *3: for 5 Door

      *4: w/ Door Control Battery

      *5: Door control battery not charged

      *6: Door control battery charging or charged

      *7: w/ Glass Hatch Opener System

      *8: w/o Entry and Start System

      *9: w/ Theft Warning Siren

      *10: w/ Intrusion Sensor

      *11: w/ Glass Breakage Sensor

      *12: w/ Security Horn

    6. Using an oscilloscope, check the waveform.

      Tech Tips

      The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.


      1. Waveform 1 (Reference)

        B001IE4C03
        *a IOUT Initial Signal *b IOUT Initial Response
        *c Approximately 1.0 Second *d Initial Diagnosis
        *e Approximately 1.0 to 1.6 Seconds *f Approximately 0.05 Seconds
        *g Approximately 5.5 Seconds *h Disarmed State
        *i Arming Preparation State - -