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).

      B332798C17

      *A

      Main Body ECU (Multiplex Network Body ECU) with 1 Connector

      -

      -

      *1

      Main Body ECU (Multiplex Network Body ECU)

      -

      -

      *a

      1 Connector

      -

      -
      B332799C16

      *A

      Main Body ECU (Multiplex Network Body ECU) with 3 Connectors

      -

      -

      *1

      Main Body ECU (Multiplex Network Body ECU)

      -

      -

      *a

      3 Connectors

      -

      -

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

      Tip:

      Measure the values on the wire harness side with the connectors disconnected.

      Tester Connection

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A-11 (GND1) - Body ground

      -

      Ground

      Always

      Below 1 Ω

      A-30 (BECU) - Body ground

      -

      Battery power supply

      Always

      11 to 14 V

      A-29 (ACC) - Body ground

      -

      ACC power supply

      Ignition switch ACC

      11 to 14 V

      A-29 (ACC) - Body ground

      -

      ACC power supply

      Ignition switch off

      Below 1 V

      A-32 (IG) - Body ground

      -

      IG power supply

      Ignition switch ON

      11 to 14 V

      A-32 (IG) - Body ground

      -

      IG power supply

      Ignition switch off

      Below 1 V

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

  2. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for LHD, w/ Jam Protection Function)

    B290829E10

    1. Disconnect the J3 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

      J3-2 (B) - Body ground

      GR - Body ground

      Battery power supply

      Always

      11 to 14 V

      J3-1 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

  3. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (for RHD, w/ Jam Protection Function)

    B290829E11

    1. Disconnect the I3 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

      I3-2 (B) - Body ground

      GR - Body ground

      Battery power supply

      Always

      11 to 14 V

      I3-1 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

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

    B298418E03

    1. Disconnect the Q8 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

      Q8-8 (B) - Body ground

      L - Body ground

      Battery power supply

      Always

      11 to 14 V

      Q8-12 (E) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

  5. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) [w/ Entry and Start System]

    B298420E01

    1. Disconnect the G82 certification 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

      G82-2 (+B) - Body ground

      W - Body ground

      Battery power supply

      Always

      11 to 14 V

      G82-11 (E) - Body ground

      BR - Body ground

      Ground

      Always

      Below 1 Ω

  6. CHECK ID CODE BOX (IMMOBILISER CODE BOX) [w/ Entry and Start System, w/ Multi-information Display (Dot Display Type)]

    B339129E01

    1. Disconnect the G44 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

      G44-1 (+B) - Body ground

      BE - Body ground

      Battery power supply

      Always

      11 to 14 V

      G44-5 (GND) - Body ground

      B - Body ground

      Ground

      Always

      Below 1 Ω

  7. CHECK STEERING LOCK ACTUATOR ASSEMBLY (w/ Entry and Start System)

    B339131E01

    1. Disconnect the G5 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

      G5-7 (B) - Body ground

      L - Body ground

      Battery power supply

      Always

      11 to 14 V

      G5-1 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

  8. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (w/ Automatic Air Conditioning System)

    B339133E01

    1. Disconnect the G81 air conditioning amplifier 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

      G81-1 (IG+) - Body ground

      GR - Body ground

      IG power supply

      Ignition switch off

      Below 1 V

      G81-1 (IG+) - Body ground

      GR - Body ground

      IG power supply

      Ignition switch ON

      11 to 14 V

      G81-21 (B) - Body ground

      GR - Body ground

      Battery power supply

      Always

      11 to 14 V

      G81-14 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

  9. CHECK AIR CONDITIONING CONTROL ASSEMBLY

    B339135E01

    1. Disconnect the G20 air conditioning control 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

      G20-8 (IG+) - Body ground

      BE - Body ground

      IG power supply

      Ignition switch ON

      11 to 14 V

      G20-8 (IG+) - Body ground

      BE - Body ground

      IG power supply

      Ignition switch off

      Below 1 V

      G20-5 (GND) - Body ground

      BR - Body ground

      Ground

      Always

      Below 1 Ω

  10. CHECK RAIN SENSOR (w/ Rain Sensor)

    B298417C01

    *1

    for LHD

    *2

    for RHD

    1. Disconnect the Q5*1 or Q10*2 rain sensor connector.

      *1: for LHD

      *2: for RHD

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

      Table 1. for LHD

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      Q5-4 (SIG) - Body ground

      GR - Body ground

      IG power supply

      Ignition switch ON

      11 to 14 V

      Q5-4 (SIG) - Body ground

      GR - Body ground

      IG power supply

      Ignition switch off

      Below 1 V

      Q5-2 (ES) - Body ground

      W-B - Body ground

      Ground circuit

      Always

      Below 1 Ω
      Table 2. for RHD

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      Q10-4 (SIG) - Body ground

      GR - Body ground

      IG power supply

      Ignition switch ON

      11 to 14 V

      Q10-4 (SIG) - Body ground

      GR - Body ground

      IG power supply

      Ignition switch off

      Below 1 V

      Q10-2 (ES) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

  11. CHECK WINDSHIELD WIPER RELAY ASSEMBLY (w/ Rain Sensor)

    B339142E01

    1. Disconnect the G85 windshield wiper relay assembly connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      G85-2 (IG) - Body ground

      L - Body ground

      Battery power supply

      Ignition switch ON

      11 to 14 V

      G85-2 (IG) - Body ground

      L - Body ground

      Battery power supply

      Ignition switch off

      Below 1 V

      G85-12 (E) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

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

    B339143E01

    1. Disconnect the G66 double lock door control relay connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      G66-7 (CPUB) - Body ground

      BR - Body ground

      Battery power supply

      Always

      11 to 14 V

      G66-1 (+B) - Body ground

      G - Body ground

      Battery power supply

      Always

      11 to 14 V

      G66-14 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω