LIN COMMUNICATION SYSTEM TERMINALS OF ECU


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

    B00403HC05
    *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 2 connectors - -
    A0028JSC05
    *A Main Body ECU (Multiplex Network Body ECU) with 3 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 3 connectors - -

    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 Terminal Description Condition Specified Condition
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      MB-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Ignition switch off Below 1 V
      MB-32 (IG) - Body ground - IG power supply Ignition switch ON 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Ignition switch off Below 1 V

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

      Click here

    5. Check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      4D-25 - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation
      4H-35 - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation

  2. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door)

    A0028U2C08
    *A for LHD *B for RHD

    1. Disconnect the I4*1 or H4*2 power window regulator motor assembly (for driver door) connector.


      • *1: for LHD

      • *2: for RHD

    2. 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.

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I4-2 (B) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      I4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H4-2 (B) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      H4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the I4*1 or H4*2 power window regulator motor assembly (for driver door) connector.


      • *1: for LHD

      • *2: for RHD

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

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I4-9 (LIN) - Body ground G - Body ground LIN communication line Ignition switch ON Pulse generation
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H4-9 (LIN) - Body ground G - Body ground LIN communication line Ignition switch ON Pulse generation

      If the result is not as specified, the power window regulator motor assembly (for driver door) may be malfunctioning.

  3. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Door)

    A0028U2C09
    *A for LHD *B for RHD

    1. Disconnect the H5*1 or I5*2 power window regulator motor assembly (for front passenger door) connector.


      • *1: for LHD

      • *2: for RHD

    2. 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.

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H5-2 (B) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      H5-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I5-2 (B) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      I5-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the H5*1 or I5*2 power window regulator motor assembly (for front passenger door) connector.


      • *1: for LHD

      • *2: for RHD

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

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H5-9 (LIN) - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I5-9 (LIN) - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation

  4. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear RH Door)

    A00296NN11

    1. Disconnect the J2 power window regulator motor assembly (for rear RH door) connector.

    2. 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 Terminal Description Condition Specified Condition
      J2-2 (B) - Body ground LA-B - Body ground Battery power supply Always 11 to 14 V
      J2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the J2 power window regulator motor assembly (for rear RH door) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J2-9 (LIN) - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation

  5. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Door)

    A00296NN12

    1. Disconnect the K2 power window regulator motor assembly (for rear LH door) connector.

    2. 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 Terminal Description Condition Specified Condition
      K2-2 (B) - Body ground LA-G - Body ground Battery power supply Always 11 to 14 V
      K2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the K2 power window regulator motor assembly (for rear LH door) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K2-9 (LIN) - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation

  6. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (for Models with Jam Protection Function on 4 Windows)

    A0026ZLC04
    *A for LHD *B for RHD

    1. Disconnect the I7*1 or H7*2 power window regulator master switch assembly connector.


      • *1: for LHD

      • *2: for RHD

    2. 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.

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I7-11 (B) - Body ground GR - Body ground Battery power supply Always 11 to 14 V
      I7-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H7-11 (B) - Body ground GR - Body ground Battery power supply Always 11 to 14 V
      H7-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the I7*1 or H7*2 power window regulator master switch assembly connector.


      • *1: for LHD

      • *2: for RHD

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

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I7-17 (LIN1) - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation
      I7-16 (LIN2) - Body ground G - Body ground LIN communication line Ignition switch ON Pulse generation
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H7-17 (LIN1) - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation
      H7-16 (LIN2) - Body ground G - Body ground LIN communication line Ignition switch ON Pulse generation

  7. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (for Models with Jam Protection Function on 2 Windows)

    A0028L1N21

    1. Disconnect the H6 power window regulator master switch assembly connector.

    2. 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 Terminal Description Condition Specified Condition
      H6-3 (B) - Body ground GR - Body ground Battery power supply Always 11 to 14 V
      H6-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the H6 power window regulator master switch assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H6-6 (LIN1) - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation
      H6-7 (LIN2) - Body ground G - Body ground LIN communication line Ignition switch ON Pulse generation

  8. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (w/ Sliding Roof System)

    A002CL1N19

    1. Disconnect the S5 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

    2. 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 Terminal Description Condition Specified Condition
      S5-8 (B) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      S5-12 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the S5 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S5-11 (MPX1) - Body ground B - Body ground LIN communication line Ignition switch ON Pulse generation

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

    B003ZN2N33

    1. Disconnect the F13 certification ECU (smart key ECU assembly) connector.

    2. 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 Terminal Description Condition Specified Condition
      F13-11 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F13-10 (+B) - Body ground GR - Body ground +B power supply Always 11 to 14 V

    3. Reconnect the F13 certification ECU (smart key ECU assembly) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F13-6 (LIN) - Body ground SB - Body ground LIN communication line Ignition switch ON Pulse generation

  10. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) (w/ Smart Entry and Start System)

    A002BZJN56

    1. Disconnect the F54 steering lock ECU (steering lock actuator assembly) connector.

    2. 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 Terminal Description Condition Specified Condition
      F54-1 (GND) - Body ground W-B Body ground Ground Always Below 1 Ω
      F54-7 (B) - Body ground B - Body ground Battery power supply Always 11 to 14 V

    3. Reconnect the F54 steering lock ECU (steering lock actuator assembly) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F54-5 (LIN) - Body ground SB - Body ground LIN communication line Ignition switch ON Pulse generation

  11. CHECK ID CODE BOX (IMMOBILISER CODE ECU) (w/ Smart Entry and Start System) (for LHD)

    A002ATBN33

    1. Disconnect the F67 ID code box (immobiliser code ECU) connector.

    2. 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 Terminal Description Condition Specified Condition
      F67-5 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      F67-1 (+B) - Body ground Y - Body ground +B power supply Always 11 to 14 V

    3. Reconnect the F67 ID code box (immobiliser code ECU) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F67-2 (LIN1) - Body ground SB - Body ground LIN communication line Ignition switch ON Pulse generation