LIN COMMUNICATION SYSTEM TERMINALS OF ECU


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

    A01R3R0N36

    1. Disconnect the MB main body ECU (multiplex network body ECU) connector.

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

      Tech Tips

      Measure the values on the wire harness side with the connectors 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 Engine switch on (ACC) 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Engine switch off Below 1 V
      MB-32 (IG) - Body ground - IG power supply Engine switch on (IG) 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Engine switch off Below 1 V

    3. Reconnect the MB main body ECU (multiplex network body 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
      4B-21 - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

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

    A01R4HBC10
    *A for LHD *B for RHD

    1. Disconnect the S2*1 or R2*2 power window regulator motor assembly (for driver door) connector.


      • *1: for LHD

      • *2: for RHD

    2. Measure the voltage and resistance 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
      S2-2 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V
      S2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R2-2 (B) - Body ground Y - Body ground Battery power supply Always 11 to 14 V
      R2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the S2*1 or R2*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
      S2-9 (LIN) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R2-9 (LIN) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

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

    A01R4HBC11
    *A for LHD *B for RHD

    1. Disconnect the R2*1 or S2*2 power window regulator motor assembly (for front passenger door) connector.


      • *1: for LHD

      • *2: for RHD

    2. Measure the voltage and resistance 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
      R2-2 (B) - Body ground Y - Body ground Battery power supply Always 11 to 14 V
      R2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S2-2 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V
      S2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the R2*1 or S2*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
      R2-9 (LIN) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S2-9 (LIN) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

  4. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (w/o Seat Position Memory System)

    A01R6FBC07
    *A for LHD *B for RHD

    1. Disconnect the S10*1 or R10*2 multiplex network master switch assembly connector.


      • *1: for LHD

      • *2: for RHD

    2. Measure the voltage and resistance 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
      S10-21 (B) - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      S10-17 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R10-21 (B) - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      R10-17 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the S10*1 or R10*2 multiplex network 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
      S10-7 (LIN1) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R10-7 (LIN1) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

  5. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (w/ Seat Position Memory System)

    A01R4U7C07
    *A for LHD *B for RHD

    1. Disconnect the S3*1 or R3*2 multiplex network master switch assembly connector.


      • *1: for LHD

      • *2: for RHD

    2. Measure the voltage and resistance 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
      S3-11 (B) - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      S3-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R3-11 (B) - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      R3-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the S3*1 or R3*2 multiplex network 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
      S3-17 (LIN1) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R3-17 (LIN1) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

  6. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A01VS6TN53

    1. Disconnect the O6 certification ECU (smart key ECU assembly) connector.

    2. Measure the voltage and resistance 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
      O6-11 (E) - Body ground BR - Body ground Ground Always Below 1 Ω
      O6-10 (+B) - Body ground BE - Body ground +B power supply Always 11 to 14 V

    3. Reconnect the O6 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
      O6-6 (LIN) - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation

  7. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

    A01R59JN70

    1. Disconnect the O27 steering lock ECU (steering lock actuator assembly) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O27-1 (GND) - Body ground W-B Body ground Ground Always Below 1 Ω
      O27-7 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V

    3. Reconnect the O27 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
      O27-5 (LIN) - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation

  8. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

    A01R403N45

    1. Disconnect the O80 ID code box (immobiliser code ECU) connector.

    2. Measure the voltage and resistance 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
      O80-5 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      O80-1 (+B) - Body ground G - Body ground +B power supply Always 11 to 14 V

    3. Reconnect the O80 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
      O80-2 (LIN1) - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation

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

    A01R6Q6N50

    1. Disconnect the W5 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

    2. Measure the voltage and resistance 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
      W5-8 (B) - Body ground V - Body ground Battery power supply Always 11 to 14 V
      W5-12 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the W5 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
      W5-11 (MPX1) - Body ground P - Body ground LIN communication line Engine switch on (IG) Pulse generation

  10. CHECK DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY (w/ Double Locking System)

    A01R4XXN06

    1. Disconnect the O141 double lock door control relay assembly connector.

    2. Measure the voltage and resistance 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
      O141-12 (+B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      O141-11 (CPUB) - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      O141-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the O141 double lock door control relay 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
      O141-9 (LIN) - Body ground P - Body ground LIN communication line Double lock unset Pulse generation