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WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Entry and Start System) TERMINALS OF ECU

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  1. A01IP5DE02

    CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the H79, H80, DB, DE and DG ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H79-4 (BATB) - Body ground BR - Body ground Battery power supply Always 11 to 14 V
      DG-1 (ALTB) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      DB-30 (BECU) - Body ground W - Body ground Power supply Always 11 to 14 V
      DE-28 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      H80-4 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the H79, H80, DB, DE and DG ECU connectors.

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

      Table 1. for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      DA-21 (DCTY) - Body ground W - Body ground Front door courtesy light switch LH input Driver side door open Below 1 V
      Driver side door close 11 to 14 V
      DE-20 (PCTY) - Body ground BR - Body ground Front door courtesy light switch RH input Front passenger side door open Below 1 V
      Front passenger side door closed 11 to 14 V
      H79-8 (LCTY) - Body ground SB - Body ground Rear door courtesy light switch LH input Rear door LH open Below 1 V
      Rear door LH closed 11 to 14 V
      DE-19 (RCTY) - Body ground LG - Body ground Rear door courtesy light switch RH input Rear door RH open Below 1 V
      Rear door RH closed 11 to 14 V
      DA-7 (BCTY) - Body ground LG - Body ground Back door courtesy light switch input Back door open Below 1 V
      Back door closed 11 to 14 V
      H79-25 (LSWD) - Body ground Y - Body ground Front door lock position switch LH input Driver side door unlocked Below 1 V
      Engine switch off, all doors closed and driver side door locked

      Pulse generation

      (see waveform 1 or 2)
      H79-10 (LSWP) - Body ground LG - Body ground Front door lock position switch RH input Front passenger side door unlocked Below 1 V
      Engine switch off, all doors closed and passenger side door locked

      Pulse generation

      (see waveform 3 or 4)
      H81-10 (LSR) - Body ground Y - Body ground Rear door lock position switch input Rear door unlocked Below 1 V
      Engine switch off, all doors closed and rear door locked

      Pulse generation

      (see waveform 5 or 6)
      H81-2 (BZR) - Body ground L - Body ground Wireless door lock buzzer signal Wireless door lock buzzer off Below 1 V
      Wireless door lock buzzer on Pulse generation
      Table 2. for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      DC-6 (DCTY) - Body ground BR - Body ground Front door courtesy light switch RH input Driver side door open Below 1 V
      Driver side door closed 11 to 14 V
      DA-24 (PCTY) - Body ground W - Body ground Front door courtesy light switch LH input Front passenger side door open Below 1 V
      Front passenger side door closed 11 to 14 V
      H79-8 (LCTY) - Body ground SB - Body ground Rear door courtesy light switch LH input Rear door LH open Below 1 V
      Rear door LH closed 11 to 14 V
      DE-19 (RCTY) - Body ground LG - Body ground Rear door courtesy light switch RH input Rear door RH open Below 1 V
      Rear door RH closed 11 to 14 V
      DA-7 (BCTY) - Body ground LG - Body ground Back door courtesy light switch input Back door open Below 1 V
      Back door closed 11 to 14 V
      H79-25 (LSWD) - Body ground LG - Body ground Front door lock position switch RH input Driver side door unlocked Below 1 V
      Engine switch off, all doors closed and driver side door locked

      Pulse generation

      (see waveform 1 or 2)
      H79-10 (LSWP) - Body ground LG - Body ground Front door lock position switch LH input Front passenger side door unlocked Below 1 V
      Engine switch off, all doors closed and passenger side door locked

      Pulse generation

      (see waveform 3 or 4)
      H81-10 (LSR) - Body ground Y - Body ground Rear door lock position switch input Rear door unlocked Below 1 V
      Engine switch off, all doors closed and rear door locked

      Pulse generation

      (see waveform 5 or 6)
      H81-2 (BZR) - Body ground L - Body ground Wireless door lock buzzer signal Wireless door lock buzzer off Below 1 V
      Wireless door lock buzzer on Pulse generation

      • If the result is not as specified, the ECU may have a malfunction.

    5. A01IRIEE01

      Using an oscilloscope, check waveform 1.

      Table 3. Waveform 1 (Reference)
      Item Content
      Terminal No. (Symbol) H79-25 (LSWD) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and driver side door locked
    6. A01IQY4E01

      Using an oscilloscope, check waveform 2.

      Table 4. Waveform 2 (Reference)
      Item Content
      Terminal No. (Symbol) H79-25 (LSWD) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and driver side door locked
    7. A01IRIEE01

      Using an oscilloscope, check waveform 3.

      Table 5. Waveform 3 (Reference)
      Item Content
      Terminal No. (Symbol) H79-10 (LSWP) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and passenger side door locked
    8. A01IQY4E01

      Using an oscilloscope, check waveform 4.

      Table 6. Waveform 4 (Reference)
      Item Content
      Terminal No. (Symbol) H79-10 (LSWP) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and passenger side door locked
    9. A01IRIEE01

      Using an oscilloscope, check waveform 5.

      Table 7. Waveform 5 (Reference)
      Item Content
      Terminal No. (Symbol) H81-10 (LSR) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and rear door locked
    10. A01IQY4E01

      Using an oscilloscope, check waveform 6.

      Table 8. Waveform 6 (Reference)
      Item Content
      Terminal No. (Symbol) H81-10 (LSR) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and rear door locked
  2. A01IOA4E09

    CHECK CERTIFICATION ECU


    1. Disconnect the H51 ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H51-1 (+B) - H51-15 (E) W - W-B +B power supply Always 11 to 14 V
      H51-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      H51-16 (IG) - H51-15 (E) L - W-B IG power supply Engine switch off → Engine switch on (IG) Below 1 V → 11 to 14 V
      H51-17 (CUTB) - H51-15 (E) W - W-B +B power supply Always 11 to 14 V

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

    3. Reconnect the H51 ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H55-5 (RCO) - H51-15 (E) V - W-B Door control receiver power source Engine switch off, all doors closed and transmitter switch not pressed → pressed Below 1 V → 4.5 to 5.5 V
      H55-15 (RDA) - H51-15 (E) Y - W-B Door control receiver data input signal Engine switch off 11 to 14 V pulse generation at regular intervals
      H55-16 (RSSI) - H51-15 (E) L - W-B Door control receiver electric wave existence signal All doors locked, all doors closed and transmitter switch not pressed → pressed 11 to 14 V → Below 2 V

      • If the result is not as specified, the certification ECU may have a malfunction.