LIN COMMUNICATION SYSTEM TERMINALS OF ECU


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

    A004K1OE03
    Text in Illustration
    *1 Instrument Panel Junction Block Assembly *2 Main Body ECU (Network Gateway ECU)

    1. Remove the main body ECU (network gateway 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-1 (BECU) - Body ground None - Body ground Battery power supply Always 11 to 14 V
      MB-8 (IG) - Body ground None - Body ground Battery power supply Ignition switch ON 11 to 14 V
      MB-11 (GND) - Body ground None - Body ground Ground Always Below 1 Ω
      MB-32 (BMPX) - Body ground None - 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. Install the main body ECU (network gateway ECU) onto the instrument panel junction block assembly.

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Switch Condition Specified Condition
      D5-4 (LIN) - D6-1 (GND) LG - B LIN Communication line Ignition switch ON Pulse generation

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

  2. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

    A004HHFE02
    Text in Illustration
    *1 for RHD *2 for LHD

    1. Disconnect the F6*1 or E8*2 power window regulator master switch 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
      F6-5 (GND) - Body ground*1 B - Body ground Ground Always Below 1 Ω
      E8-5 (GND) - Body ground*2
      F6-12 (+B) - Body ground*1 SB - Body ground Battery power supply Always 11 to 14 V
      E8-12 (+B) - Body ground*2

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

      *1 : for RHD

      *2 : for LHD

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

    A004IE2E02

    1. Disconnect the D41 and D48 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
      D48-2 (+B) - D48-11 (GND) R - B Battery power supply Always 11 to 14 V
      D48-11 (GND) - Body ground B - Body ground Ground Always Below 1 Ω

    3. Connect the D41 and D48 certification ECU (smart key ECU assembly) connectors.

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

      Terminal No.

      (Symbol)

      		 Wiring Color Terminal Description Switch Condition Specified Condition
      D41-5 (IG2) - D48-11 (GND) Y - B 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.

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

    A004HACE02

    1. Disconnect the D59 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
      D59-1 (GND) - Body ground B - Body ground Ground Always Below 1 Ω
      D59-6 (IGN1) - D59-1 (GND) BR - B Battery power supply Ignition switch ON 11 to 14 V
      D59-7 (B) - D59-1 (GND) SB - B Battery power supply Always 11 to 14 V

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

  5. CHECK ID CODE BOX (IMMOBILISER CODE ECU) (w/ Entry and Start System with ID Code Box)

    A004KL8E02

    1. Disconnect the A30 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
      A30-1 (+B) - A30-5 (GND) R-W - B-Y Battery power supply Always 11 to 14 V
      A30-5 (GND) - Body ground B-Y - Body ground Ground Always Below 1 Ω

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