LIN COMMUNICATION SYSTEM TERMINALS OF ECU


  1. CHECK COWL SIDE JUNCTION BLOCK LH, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B002BJJE17
    Text in Illustration
    *1 Main body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH Click here.

    2. Reconnect the cowl side junction block LH connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-32 (IG) - Body ground - IG power supply Power switch on (IG) 11 to 14 V
      A-30 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-29 (ACC) - Body ground - ACC power supply Power switch on (ACC) 11 to 14 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω

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

  2. CHECK POWER MANAGEMENT CONTROL ECU

    A000P1OE02

    1. Disconnect the N91 and N92 Certification ECU connectors.

    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
      N91-1 (AM22) - N91-6 (E) P - W-B Battery power supply Power switch on (IG) Below 1 Ω
      N92-7 (AM21) - N91-6 (E1) P - W-B IG power supply Power switch on (IG) 11 to 14 V
      N91-6 (E1) - Body ground W-B - Body ground Ground Always 11 to 14 V

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

  3. CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH

    A000NF3E02

    1. Disconnect the Q19 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
      Q19-3 (SIG) - Body ground B - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Q19-4 (CPUB) - Body ground P - Body ground Battery power supply Always 11 to 14 V
      Q19-6 (BDR) - Body ground V - Body ground Battery power supply Always 11 to 14 V
      Q19-16 (BCUT) - Body ground* W - Body ground Battery power supply Always 11 to 14 V
      Q19-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • *: for LHD

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

  4. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH

    A000RV5E02

    1. Disconnect the Q4 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
      Q4-3 (SIG) - Body ground B - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Q4-4 (CPUB) - Body ground P - Body ground Battery power supply Always 11 to 14 V
      Q4-6 (BDR) - Body ground V - Body ground Battery power supply Always 11 to 14 V
      Q4-16 (BCUT) - Body ground* L - Body ground Battery power supply Always 11 to 14 V
      Q4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • *: for RHD

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

  5. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (for LHD)

    A000MTRE02

    1. Disconnect the Q25 multiplex network master switch 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
      Q25-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      Q25-11 (B) - Q25-12 (GND) P - W-B IG power supply Power switch off → Power switch on (IG) Below 1 V → 11 to 14 V

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

  6. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (for RHD)

    A000SDNE02

    1. Disconnect the Q10 multiplex network master switch 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
      Q10-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      Q10-11 (B) - Q10-12 (GND) P - W-B IG power supply Power switch off → Power switch on (IG) Below 1 V → 11 to 14 V

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

  7. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

    A000OXRE02

    1. Disconnect the Q17 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
      Q17-1 (E) - Body ground BR - Body ground Ground Always Below 1 Ω
      Q17-2 (B) - Q17-1 (E) R - BR Battery power supply Always 11 to 14 V

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

  8. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

    A000P3ME02

    1. Disconnect the Q2 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
      Q2-1 (E) - Body ground BR - Body ground Ground Always Below 1 Ω
      Q2-2 (B) - Q2-1 (E) R - BR Battery power supply Always 11 to 14 V

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

  9. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

    A000OZRE02

    1. Disconnect the R9 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
      R9-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      R9-2 (B) - R9-1 (E) R - W-B Battery power supply Always 11 to 14 V

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

  10. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

    A000PUYE01

    1. Disconnect the R1 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
      R1-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      R1-2 (B) - R1-1 (E) R - W-B Battery power supply Always 11 to 14 V

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

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

    A000OG7E02

    1. Disconnect the Y4 sliding roof drive gear sub-assembly connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      Y4-12 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      Y4-8 (B) - Y4-12 (E) L - W-B Battery power supply Always 11 to 14 V

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

  12. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A000OILE02

    1. Disconnect the N94 and N95 Certification ECU connectors.

    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
      N94-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N95-5 (+B) - N94-1 (E) GR - W-B Battery power supply Always 11 to 14 V
      N95-16 (IG) - N94-1 (E) B - W-B IG power supply Power switch off → Power switch on (IG) Below 1 V → 11 to 14 V

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

  13. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

    A000OO3E02

    1. Disconnect the N73 ID code box 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
      N73-5 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N73-1 (+B) - N73-5 (GND) GR - W-B Battery power supply Always 11 to 14 V

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

  14. CHECK STEERING LOCK ACTUATOR ASSEMBLY

    A000P36E02

    1. Disconnect the N24 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
      N24-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N24-7 (B) - N24-1 (GND) L - W-B Battery power supply Always 11 to 14 V

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

  15. CHECK RAIN SENSOR (w/ Rain Sensor)

    A000RCDE02

    1. Disconnect the Y5 rain 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
      Y5-2 (ES) - Body ground W - Body ground Ground Always Below 1 Ω
      Y5-4 (SIG) - Y5-2 (ES) P - W IG power supply Power switch off → Power switch on (IG) Below 1 V → 11 to 14 V

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

  16. CHECK REFRESHING SEAT SWITCH (w/ Refreshing Seat Switch)

    A000QS2E02

    1. Disconnect the N72 refreshing seat switch 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
      N72-4 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N72-1 (IG) - N72-4 (E) LG - W-B IG power supply Power switch off → Power switch on (IG) Below 1 V → 11 to 14 V

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

  17. CHECK REAR CONTROL SWITCH (w/ Rear Control Switch)

    A000RZPE03

    1. Disconnect the Z1 rear control switch 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
      Z1-7 (IG+) - Z1-5 (E) L - W-B IG power supply Power switch off → Power switch on (IG) Below 1 V → 11 to 14 V
      Z1-5 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

  18. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

    A000OIOE02

    1. Disconnect the N78 air conditioning amplifier assembly connector.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N78-5 (IG+) - N78-1 (GND) L - W-B IG power supply Power switch off → Power switch on (IG) Below 1 V → 11 to 14 V
      N78-6 (+B1) - N78-1 (GND) W - W-B Battery power supply Always 11 to 14 V
      N78-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

  19. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY

    A000RZ6E02
    Text in Illustration
    *A for LH Side *B for RH Side

    1. Disconnect the N35 windshield wiper switch 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
      N35-7 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N35-2 (+B) - N35-7 (E) SB - W-B IG power supply Power switch off → Power switch on (IG) Below 1 V → 11 to 14 V

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