LIN COMMUNICATION SYSTEM TERMINALS OF ECU


  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND 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

      B006BCPC30
      *1 Main Body ECU (Multiplex Network Body ECU) - -

    2. Reconnect the instrument panel junction block assembly connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω
      A-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-30 (ACC) - Body ground - ACC power supply Engine switch on (ACC) 11 to 14 V
      Engine switch off Below 1 V
      A-32 (IG) - Body ground - IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V

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

      Click here

    5. Measure the pulse according to the value(s) in the table below.

      for LHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      5A-19 - Body ground L - Body ground LIN communication line Engine switch on (IG) Pulse generation
      5A-20 - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation
      5H-34 - Body ground BE - Body ground LIN communication line Engine switch on (IG) Pulse generation
      5H-35 - Body ground B - Body ground LIN communication line Engine switch on (IG) Pulse generation
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      5A-40 - Body ground L - Body ground LIN communication line Engine switch on (IG) Pulse generation
      5H-34 - Body ground B - Body ground LIN communication line Engine switch on (IG) Pulse generation
      5H-33 - Body ground LG - Body ground LIN communication line Engine switch on (IG) Pulse generation

  2. CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH

    B006ATTE07

    1. Disconnect the H31 front multiplex network door ECU LH 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
      H31-3 (SIG) - Body ground B - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      H31-4 (CPUB) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      H31-6 (BDR) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      H31-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the H31 front multiplex network door ECU LH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H31-11 (LIN1) - Body ground

      SB - Body ground*1

      B - Body ground*2

      		 LIN communication line Engine switch on (IG) Pulse generation
      H31-13 (LIN3) - Body ground W - Body ground LIN communication line Engine switch on (IG) Pulse generation

      *1: for LHD

      *2: for RHD

  3. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH

    B006ATTE08

    1. Disconnect the H12 front multiplex network door ECU RH 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
      H12-3 (SIG) - Body ground B - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      H12-4 (CPUB) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      H12-6 (BDR) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      H12-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the H12 front multiplex network door ECU RH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H12-11 (LIN1) - Body ground

      B - Body ground*1

      SB - Body ground*2

      		 LIN communication line Engine switch on (IG) Pulse generation
      H12-13 (LIN3) - Body ground W - Body ground LIN communication line Engine switch on (IG) Pulse generation

      *1: for LHD

      *2: for RHD

  4. CHECK REAR MULTIPLEX NETWORK DOOR ECU LH

    B006BFZE10

    1. Disconnect the K21 rear multiplex network door ECU LH 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
      K21-12 (SIG) - Body ground B - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      K21-11 (CPUB) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      K21-4 (BDR) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      K21-1 (GND) - Body ground LA - Body ground Ground Always Below 1 Ω

    3. Reconnect the K21 rear multiplex network door ECU LH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K21-22 (LIN1) - Body ground B - Body ground LIN communication line Engine switch on (IG) Pulse generation
      K21-23 (LIN3) - Body ground L - Body ground LIN communication line Engine switch on (IG) Pulse generation

  5. CHECK REAR MULTIPLEX NETWORK DOOR ECU RH

    B006BFZE11

    1. Disconnect the K7 rear multiplex network door ECU RH 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
      K7-12 (SIG) - Body ground L - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      K7-11 (CPUB) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      K7-4 (BDR) - Body ground B - Body ground Battery power supply Always 11 to 14 V
      K7-1 (GND) - Body ground LA - Body ground Ground Always Below 1 Ω

    3. Reconnect the K7 rear multiplex network door ECU RH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K7-22 (LIN1) - Body ground B - Body ground LIN communication line Engine switch on (IG) Pulse generation
      K7-23 (LIN3) - Body ground L - Body ground LIN communication line Engine switch on (IG) Pulse generation

  6. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

    B006BZBC11
    *A for LHD
    *B for RHD

    1. Disconnect the I5*1 or I2*2 multiplex network 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.

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I5-11 (B) - Body ground LA-GR - Body ground Battery power supply Always 11 to 14 V
      I5-12 (GND) - Body ground LA-R - Body ground Ground Always Below 1 Ω
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I2-11 (B) - I2-12 (GND) LA-GR - LA-R Power supply Always 11 to 14 V
      I2-12 (GND) - Body ground LA-R - Body ground Ground Always Below 1 Ω

    3. Reconnect the I5*1 or I2*2 multiplex network master switch assembly connector.


      • *1: for LHD

      • *2: for RHD

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

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I5-17 (LIN1) - Body ground SB - Body ground LIN communication line Engine switch on (IG) Pulse generation
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I2-17 (LIN1) - Body ground SB - Body ground LIN communication line Engine switch on (IG) Pulse generation

  7. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

    B006DXXE18

    1. Disconnect the H21 front power window regulator motor assembly LH 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
      H21-1 (GND) - Body ground LA-B - Body ground Ground Always Below 1 Ω
      H21-2 (B) - Body ground

      LA-L - Body ground*1

      LA-R - Body ground*2

      		 Battery power supply Always 11 to 14 V

      *1: for LHD

      *2: for RHD

    3. Reconnect the H21 front power window regulator motor assembly LH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H21-9 (LIN) - Body ground W - Body ground LIN communication line Engine switch on (IG) Pulse generation

  8. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

    B006DXXE19

    1. Disconnect the H2 front power window regulator motor assembly RH 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
      H2-1 (GND) - Body ground LA-B - Body ground Ground Always Below 1 Ω
      H2-2 (B) - Body ground

      LA-R - Body ground*1

      LA-L - Body ground*2

      		 Battery power supply Always 11 to 14 V

      *1: for LHD

      *2: for RHD

    3. Reconnect the H2 front power window regulator motor assembly RH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H2-9 (LIN) - Body ground W - Body ground LIN communication line Engine switch on (IG) Pulse generation

  9. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

    B006DXXE28

    1. Disconnect the K15 rear power window regulator motor assembly LH 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
      K15-1 (GND) - Body ground LA-B - Body ground Ground Always Below 1 Ω
      K15-2 (B) - Body ground LA-B - Body ground Battery power supply Always 11 to 14 V

    3. Reconnect the K15 rear power window regulator motor assembly LH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K15-9 (LIN) - Body ground L - Body ground LIN communication line Engine switch on (IG) Pulse generation

  10. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

    B006DXXE29

    1. Disconnect the K1 rear power window regulator motor assembly RH 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
      K1-1 (GND) - Body ground LA-B - Body ground Ground Always Below 1 Ω
      K1-2 (B) - Body ground LA-BE - Body ground Battery power supply Always 11 to 14 V

    3. Reconnect the K1 rear power window regulator motor assembly RH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K1-9 (LIN) - Body ground L - Body ground LIN communication line Engine switch on (IG) Pulse generation

  11. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B006GTSE27

    1. Disconnect the G71 certification ECU (smart key ECU 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
      G71-4 (+B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      G71-18 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the G71 certification ECU (smart key ECU assembly) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G71-13 (LIN) - Body ground G - Body ground LIN communication line Engine switch on (IG) Pulse generation

  12. CHECK STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY

    B006EBQE07

    1. Disconnect the G22 steering lock actuator or upper bracket 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
      G22-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      G22-6 (IG2) - Body ground R - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      G22-7 (B) - Body ground B - Body ground Battery power supply Always 11 to 14 V

    3. Reconnect the G22 steering lock actuator or upper bracket assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G22-5 (LIN) - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation

  13. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

    B006CCKE03

    1. Disconnect the G58 ID code box (immobiliser code ECU) 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
      G58-1 (+B) - Body ground LA-GR - Body ground Battery power supply Always 11 to 14 V
      G58-5 (GND) - Body ground LA - Body ground Ground Always Below 1 Ω

    3. Reconnect the G58 ID code box (immobiliser code ECU) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G58-2 (LIN1) - Body ground L - Body ground LIN communication line Engine switch on (IG) Pulse generation

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


    1. B006FR6E04

      Disconnect the N4 sliding roof drive gear sub-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
      N4-1 (B) - Body ground LA-G - Body ground Battery power supply Always 11 to 14 V
      N4-2 (E) - Body ground LA-G - Body ground Ground Always Below 1 Ω

    3. Reconnect the N4 sliding roof drive gear sub-assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N4-7 (MPX1) - Body ground V - Body ground LIN communication line Engine switch on (IG) Pulse generation

  15. CHECK KICK DOOR CONTROL SENSOR (w/ Hands Free Power Trunk Lid)

    B006FV1E03

    1. Disconnect the O5 kick door control sensor 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
      O5-1 (B) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      O5-4 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the O5 kick door control sensor connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O5-2 (LIN) - Body ground SB - Body ground LIN communication line Engine switch on (IG) Pulse generation

  16. CHECK REAR SIDE WINDOW CURTAIN ASSEMBLY LH (w/ Side Window Curtain)

    B006D9EE04

    1. Disconnect the L144 rear side window curtain assembly LH 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
      L144-3 (B) - Body ground LA-B - Body ground Battery power supply Always 11 to 14 V
      L144-10 (E) - Body ground LA - Body ground Ground Always Below 1 Ω

    3. Reconnect the L144 rear side window curtain assembly LH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L144-6 (LIN) - Body ground LA-SB - Body ground LIN communication line Engine switch on (IG) Pulse generation

  17. CHECK REAR SIDE WINDOW CURTAIN ASSEMBLY RH (w/ Side Window Curtain)

    B006D9EE05

    1. Disconnect the L143 rear side window curtain assembly RH 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
      L143-3 (B) - Body ground LA-B - Body ground Battery power supply Always 11 to 14 V
      L143-10 (E) - Body ground LA - Body ground Ground Always Below 1 Ω

    3. Reconnect the L143 rear side window curtain assembly RH connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L143-6 (LIN) - Body ground LA-SB - Body ground LIN communication line Engine switch on (IG) Pulse generation