WIRELESS DOOR LOCK CONTROL SYSTEM TERMINALS OF ECU


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

    B004CRXC11
    *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. Reconnect 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 Input/Output Terminal Description Condition Specified Condition Related Data List Item
      A-11 (GND1) - Body ground - - Ground Always Below 1 Ω -
      A-30 (ACC) - Body ground - Input ACC power supply Power switch on (ACC) 11 to 14 V ACC SW
      Power switch off Below 1 V
      A-31 (BECU) - Body ground - Input Auxiliary battery power supply Power switch off 11 to 14 V -
      A-32 (IG) - Body ground - Input IG power supply Power switch on (IG) 11 to 14 V IG SW
      Power switch off Below 1 V

    4. Install the main body ECU (multiplex network body ECU) to the driver side junction block assembly.

      Click here

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

      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      3C-31 (BZR) - Body ground B - Body ground Output Wireless door lock buzzer output Active Test Wireless Buzzer on

      Pulse generation

      (frequency: 2 kHz, high voltage: 11 to 14 V, low voltage: below 1 V)

      		 -
      Active Test Wireless Buzzer off Below 1 V

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B004AAPE07

    1. Disconnect the P66 certification ECU (smart key ECU assembly) connector.

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

      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      P66-18 (E) - Body ground W-B - Body ground - Ground Always Below 1 Ω -
      P66-4 (+B) - Body ground W - Body ground Input Power supply Power switch off 11 to 14 V -

    3. Reconnect the P66 certification ECU (smart key ECU assembly) connector.

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

      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      X23-18 (RCO) - P66-18 (E) G - W-B Output

      Output to door control receiver

      (Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)

      Procedure:


      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 1)

      		 -
      X23-19 (RDAM) - P66-18 (E) BE - W-B Input

      Door control receiver verifies data received from electrical key transmitter sub-assembly.

      Door control receiver sends data from electrical key transmitter sub-assembly to certification ECU (smart key ECU assembly) (Door control receiver intermittently grounds 12 V signal from certification ECU (smart key ECU assembly)).

      Proceed:


      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 2)

      		 -
      X23-20 (CSEL) - P66-18 (E) P - W-B Output Communication channel switching circuit

      Procedure:


      1. Power switch off

      2. All doors closed

      		 Below 1 V → pulse generation -
    5. B004C8YC12
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 1.

      Tech Tips

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

      Waveform 1 (Reference)
      Item Content
      Tester Connection X23-18 (RCO) - P66-18 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
    6. B004CAUC12
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 2.

      Tech Tips

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

      Waveform 2 (Reference)
      Item Content
      Tester Connection X23-19 (RDAM) - P66-18 (E)
      Tool Setting 5 V/DIV., 500 ms/DIV.
      Condition

        Procedure:

      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly not inside vehicle

      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area

      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed