LIN COMMUNICATION SYSTEM TERMINALS OF ECU


  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


    1. Disconnect the 2C and 2B instrument panel junction block assembly connectors.

      A01JCE7E06

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2C-18 (BECU) - Body ground Y - Body ground Battery power supply Power switch off 11 to 14 V
      2B-6 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the 2C and 2B instrument panel junction block assembly connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2D-26 (LIN2) - 2B-6 (GND1) P - W-B LIN communication line Power switch on (IG) Pulse generation
      2A-27 (LIN2) - 2B-6 (GND1) P - W-B LIN communication line Power switch on (IG) Pulse generation

      If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may be malfunctioning.

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


    1. Disconnect the O2*1 or N2*2 power window regulator motor assembly (for driver side) connector.


      • *1: for LHD

      • *2: for RHD

      A01JBEOE35
      Text in Illustration
      *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
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O2-2 (B) - O2-1 (GND) L - W-B Battery power supply Power switch off 11 to 14 V
      O2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N2-2 (B) - N2-1 (GND) L - W-B Battery power supply Power switch off 11 to 14 V
      N2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the O2*1 or N2*2 power window regulator motor assembly (for driver side) connector.


      • *1: for LHD

      • *2: for RHD

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

      for LHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O2-9 (LIN) - O2-1 (GND) B - W-B LIN communication line Power switch on (IG) Pulse generation
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N2-9 (LIN) - N2-1 (GND) P - W-B LIN communication line Power switch on (IG) Pulse generation

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

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


    1. Disconnect the N2*1 or O2*2 power window regulator motor assembly (for front passenger side) connector.


      • *1: for LHD

      • *2: for RHD

      A01JBEOE36
      Text in Illustration
      *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
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N2-2 (B) - N2-1 (GND) R - W-B Battery power supply Power switch off 11 to 14 V
      N2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O2-2 (B) - O2-1 (GND) G - W-B Battery power supply Power switch off 11 to 14 V
      O2-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the N2*1 or O2*2 power window regulator motor assembly (for front passenger side) connector.


      • *1: for LHD

      • *2: for RHD

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

      for LHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N2-9 (LIN) - N2-1 (GND) P - W-B LIN communication line Power switch on (IG) Pulse generation
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O2-9 (LIN) - O2-1 (GND) P - W-B LIN communication line Power switch on (IG) Pulse generation

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

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


    1. Disconnect the P4 power window regulator motor assembly (for rear RH side) connector.

      A01JBEOE33

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      P4-2 (B) - P4-1 (GND) R - W-B Battery power supply Power switch off 11 to 14 V
      P4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the P4 power window regulator motor assembly (for rear RH side) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      P4-9 (LIN) - P4-1 (GND) P - W-B LIN communication line Power switch on (IG) Pulse generation

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

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


    1. Disconnect the Q4 power window regulator motor assembly (for rear LH side) connector.

      A01JBEOE34

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      Q4-2 (B) - Q4-1 (GND) R - W-B Battery power supply Power switch off 11 to 14 V
      Q4-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the Q4 power window regulator motor assembly (for rear LH side) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      Q4-9 (LIN) - Q4-1 (GND) P - W-B LIN communication line Power switch on (IG) Pulse generation

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

  6. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Disconnect the O6*1 or N6*2 multiplex network master switch assembly connector.


      • *1: for LHD

      • *2: for RHD

      A01J94JE17
      Text in Illustration
      *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
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O6-11 (B) - O6-12 (GND) L - W-B Battery power supply Power switch off 11 to 14 V
      O6-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N6-11 (B) - N6-12 (GND) L - W-B Battery power supply Power switch off 11 to 14 V
      N6-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the O6*1 or N6*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
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      O6-17 (LIN1) - O6-12 (GND) P - W-B LIN communication line Power switch on (IG) Pulse generation
      for RHD
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N6-17 (LIN1) - N6-12 (GND) P - W-B LIN communication line Power switch on (IG) Pulse generation

      If the result is not as specified, the multiplex network master switch assembly may be malfunctioning.

  7. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (w/ Moonroof with Solar Panel)


    1. Disconnect the R23 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

      A01JBWSE21

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      R23-1 (B) - R23-2 (E) R - W-B Battery power supply Power switch off 11 to 14 V
      R23-2 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the R23 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      R23-4 (MPX1) - R23-2 (E) P - W-B LIN communication line Power switch on (IG) Pulse generation

      If the result is not as specified, the sliding roof ECU (sliding roof drive gear sub-assembly) may be malfunctioning.

  8. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Disconnect the L62 certification ECU (smart key ECU assembly) connector.

      A01JCO5E02

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L62-1 (+B) - L62-15 (E) B - W-B Battery power supply Power switch off 11 to 14 V
      L62-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the L62 certification ECU (smart key ECU assembly) connector.

    4. Measure the voltage and check for pulses according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L62-16 (IG) - L62-15 (E) BE - W-B Power switch power supply Power switch on (IG) 11 to 14 V
      L62-16 (IG) - L62-15 (E) BE - W-B Power switch power supply Power switch off Below 1 V
      L62-29 (LIN) - L62-15 (E) L - W-B LIN communication line Power switch on (IG) Pulse generation

      If the result is not as specified, the certification ECU (smart key ECU assembly) may be malfunctioning.

  9. CHECK ID CODE BOX (IMMOBILISER CODE ECU) (w/ Airbag Cut-off Switch)


    1. Disconnect the L10 ID code box (immobiliser code ECU) connector.

      A01JD36E11

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L10-1 (+B) - L10-8 (GND) B - W-B Battery power supply Power switch off 11 to 14 V
      L10-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the L10 ID code box (immobiliser code ECU) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L10-3 (LIN1) - L10-8 (GND) L - BR LIN communication line Power switch on (IG) Pulse generation

      If the result is not as specified, the ID code box (immobiliser code ECU) may be malfunctioning.

  10. CHECK TRANSMISSION CONTROL ECU ASSEMBLY


    1. Disconnect the A23 and A24 transmission control ECU assembly connectors.

      A01JATGE02

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A23-15 (BATT) - Body ground SB - Body ground Battery power supply Power switch off 11 to 14 V
      A24-1 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      A24-5 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A24-6 (E01) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the A23 and A24 transmission control ECU assembly connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A24-24 (LIN) - A24-1 (E1) L - BR LIN communication line Power switch on (IG) Pulse generation

      If the result is not as specified, the transmission control ECU assembly may be malfunctioning.

  11. CHECK POWER MANAGEMENT CONTROL ECU


    1. Disconnect the L5 and L6 power management control ECU connectors.

      A01JA8UE14

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L5-1 (AM22) - Body ground W - Body ground Battery power supply Power switch off 11 to 14 V
      L6-7 (AM21) - Body ground W - Body ground Battery power supply Power switch off 11 to 14 V
      L5-6 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the L5 and L6 power management control ECU connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L6-11 (LIN2) - L5-6 (E1) L - BR LIN communication line Power switch on (IG) Pulse generation

      If the result is not as specified, the power management control ECU may be malfunctioning.

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


    1. Disconnect the L105 double lock door control relay assembly connector.

      A01JB0UE11

    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.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L105-1 (+B) - Body ground R - Body ground Battery power supply Power switch off 11 to 14 V
      L105-7 (CPUB) - Body ground Y - Body ground Battery power supply Power switch off 11 to 14 V
      L105-14 (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.

    3. Reconnect the L105 double lock door control relay assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L105-9 (MPX1) - Body ground P - Body ground LIN communication line Double lock unset Pulse generation

      If the result is not as specified, the double lock door control relay assembly may be malfunctioning.