LIN COMMUNICATION SYSTEM TERMINALS OF ECU


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

    A01VLAAE02
    Text in Illustration
    *A for LHD *B for RHD
    *a

    Component without harness connected

    (Instrument Panel Junction Block Assembly)

    		 *b

    Component without harness connected

    (Main Body ECU (Multiplex Network Body ECU))

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

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

      Terminal No. (Symbol) Wiring Color Terminal Description Switch Condition Specified Condition
      MB-11 (GND1) - Body ground None - Body ground Ground Always Below 1 Ω
      MB-29 (ACC) - Body ground None - Body ground Battery power supply Ignition switch ACC 11 to 14 V
      MB-30 (BECU) - Body ground None - Body ground Battery power supply Always 11 to 14 V
      MB-32 (IG) - Body ground None - Body ground Battery power supply Ignition switch ON 11 to 14 V

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

    3. Install the main body ECU (multiplex network body ECU) onto the instrument panel junction block assembly.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Switch Condition Specified Condition
      3B-12 - 3B-8 (GND1) W - W-B LIN Communication line Ignition switch ON Pulse generation
      3B-26 - 3B-8 (GND1) R - W-B LIN Communication line Ignition switch ON Pulse generation

      If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may have a malfunction.

  2. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Driver Side) (for LHD)

    A01VG80E03

    1. Disconnect the H3 power window regulator motor assembly LH (for driver side) 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
      H3-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      H3-2 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V

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

  3. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (for Driver Side) (for RHD)

    A01VF16E02

    1. Disconnect the G3 power window regulator motor assembly RH (for driver side) 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
      G3-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      G3-2 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V

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

  4. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Entry and Start System)

    A01VKQTE03

    1. Disconnect the F63 and F65 certification ECU (smart key ECU assembly) connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Switch Condition Specified Condition
      F63-5 (IG) - Body ground P - Body ground Battery power supply Ignition switch ON 11 to 14 V
      F65-2 (+B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      F65-10 (CUTB) - Body ground Y - Body ground Battery power supply Always 11 to 14 V
      F65-11 (E) - Body ground BR - Body ground Ground Always Below 1 Ω

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

  5. CHECK STEERING LOCK ACTUATOR ASSEMBLY (w/ Entry and Start System)

    A01VM41E03

    1. Disconnect the F61 steering lock actuator assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Switch Condition Specified Condition
      F61-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F61-6 (IG2) - Body ground SB - Body ground Battery power supply Ignition switch ON 11 to 14 V
      F61-7 (B) - Body ground GR - Body ground Battery power supply Always 11 to 14 V

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

  6. CHECK ID CODE BOX (IMMOBILISER CODE ECU) (w/ Entry and Start System)

    A01VFRQE04

    1. Disconnect the F60 ID code box (immobiliser code 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
      F60-1 (+B) - Body ground BE - Body ground Battery power supply Always 11 to 14 V
      F60-5 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

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

  7. CHECK DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY (w/ Double Locking Function)

    A01VF0GE03

    1. Disconnect the F79 double lock door control relay assembly 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
      F79-1 (+B) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      F79-7 (CPUB) - Body ground BE - Body ground Battery power supply Always 11 to 14 V
      F79-14 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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