POWER DOOR LOCK CONTROL SYSTEM (for 2 Step Unlock Function) TERMINALS OF ECU


  1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY

    A01E18LE01
    Text in Illustration
    *1 Integration Relay - -

    1. Disconnect the 2D, 2H and 2L driver side junction block assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2D-9 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      2D-18 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      2H-4 (ALTB) - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      2L-12 (BECU) - Body ground L - Body ground Battery power supply Always 11 to 14 V

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

    3. Reconnect the 2D, 2H and 2L driver side junction block assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2A-4 (L1) - Body ground L - Body ground

      • Power window regulator master switch assembly (door control switch) lock input signal

      • Driver side door key-linked lock input signal

      • Power window regulator master switch assembly (door control switch) locked

      • Driver side door key cylinder in lock position

      		 Below 1 V

      • Power window regulator master switch assembly (door control switch) off

      • Ignition switch off, all doors closed and driver side door key cylinder in neutral position

      		 11 to 14 V
      2D-4 (UL1) - Body ground L-W - Body ground

      • Power window regulator master switch assembly (door control switch) unlock input signal

      • Driver side door key-linked unlock input signal

      • Power window regulator master switch assembly (door control switch) unlocked

      • Driver side door key cylinder in unlock position

      		 Below 1 V

      • Power window regulator master switch assembly (door control switch) off

      • Ignition switch off, all doors closed and driver side door key cylinder in neutral position

      		 11 to 14 V
      2K-10 (ACT-) - Body ground L-Y - Body ground Door lock motor unlock drive output signal (passenger door, and rear RH door*1, *3 or rear LH door*2, *3) Power window regulator master switch assembly (door control switch) not pushed and driver side door key cylinder in neutral position Below 1 V
      Lock side of power window regulator master switch assembly (door control switch) pushed, or driver side door key cylinder in unlock position 11 to 14 V
      2K-11 (ACT+) - Body ground L - Body ground Door lock motor lock drive output signal (passenger door, and rear RH door*1, *3 or rear LH door*2, *3) Power window regulator master switch assembly (door control switch) not pushed and driver side door key cylinder in neutral position Below 1 V
      Lock side of power window regulator master switch assembly (door control switch) pushed, or driver side door key cylinder in lock position 11 to 14 V
      2O-27 (DCTY) - Body ground R-B - Body ground Front door courtesy light switch assembly LH*1 or RH*2 input signal Driver side door open Below 1 V
      Driver side door closed 11 to 14 V
      2R-27 (ACT-) - Body ground L-Y - Body ground Door lock motor unlock drive output signal (driver door, and rear LH door*1, *3 or rear RH door*2, *3) Power window regulator master switch assembly (door control switch) not pushed and driver side door key cylinder in neutral position Below 1 V
      Lock side of power window regulator master switch assembly (door control switch) pushed, or driver side door key cylinder in unlock position 11 to 14 V
      2R-28 (ACT+) - Body ground L - Body ground Door lock motor lock drive output signal (driver door, and rear LH door*1, *3 or rear RH door*2, *3) Power window regulator master switch assembly (door control switch) not pushed and driver side door key cylinder in neutral position Below 1 V
      Lock side of power window regulator master switch assembly (door control switch) pushed, or driver side door key cylinder in lock position 11 to 14 V

      • *1: for LHD

      • *2: for RHD

      • *3 : for Double Cab


      • If the result is not as specified, the driver side junction block assembly may have a malfunction.

  2. CHECK THEFT WARNING ECU ASSEMBLY


    1. A01E1QOE01

      Disconnect the T39 theft warning ECU assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T39-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      T39-3 (+B1) - Body ground L-Y - Body ground Battery power supply Always 11 to 14 V
      T39-12 (+B2) Body ground LG - Body ground Battery power supply Always 11 to 14 V
      T39-4 (IG) Body ground R-L - Body ground Ignition power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V

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

    3. Reconnect the T39 theft warning ECU assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T39-7 (CTY) - Body ground R-L - Body ground All Door courtesy switches input signal One or more doors open Below 1 V
      All doors closed 11 to 14 V
      T39-15 (SPD) - Body ground* V-R - Body ground Vehicle speed input signal Driving at approximately 20 km/h (12.4 mph) Pulse generation (See waveform 1)
      T39-11 (DDUL) - Body ground L-Y - Body ground Driver side door unlock output signal Transmitter unlock switch pressed Pulse generation

      • *: for LHD

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

    5. Inspect using an oscilloscope.

      Tech Tips


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

      • As the vehicle speed increases, the wavelength shortens.


      1. A01DZB0E01

        Waveform 1 (Reference)

        Measurement Condition
        Item Content
        Tester Connection T39-15 (SPD) - Body ground
        Tool Setting 5 V/DIV., 10 msec./DIV.
        Condition Driving at approximately 20 km/h (12.4 mph)