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


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

    B0070ETC09
    *A for LHD *B for RHD

    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      Click here

    2. Reconnect the instrument panel junction block assembly connectors.

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      MB-11 (GND1) - Body ground - - Ground Always Below 1 Ω -
      MB-30 (ACC) - Body ground - Input ACC power supply Ignition switch ACC 11 to 14 V ACC SW
      Ignition switch off Below 1 V
      MB-31 (BECU) - Body ground - Input Battery power supply Always 11 to 14 V -
      MB-32 (IG) - Body ground - Input IG power supply Ignition switch ON 11 to 14 V IG SW
      Ignition switch off Below 1 V

    4. Install the main body ECU (multiplex network body ECU) to instrument panel junction block assembly.

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

      Terminal No. (Symbol) Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      3C-29 (BZR) - Body ground L - Body ground Output Wireless door lock buzzer output Active Test Wireless Buzzer is OFF Below 1 V -
      Active Test Wireless Buzzer is ON Pulse generation
      K53-11 (PRG) - Body ground G - Body ground Output Output to door control receiver Key inserted into ignition key cylinder → Key pulled out of ignition key cylinder 11 to 14 V → Pulse generation → 11 to 14 V -
      K53-10 (RDA) - Body ground R - Body ground Input Input from door control receiver

        Procedure:

      1. Remove key from ignition key cylinder

      2. Close all doors

      3. Press lock or unlock switch of door control transmitter module set sub-assembly

      		 11 to 14 V → Pulse generation -