POWER DOOR LOCK CONTROL SYSTEM(for Sedan) TERMINALS OF ECU

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

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

      B332798C01

      *A

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

      -

      -

      *1

      Main Body ECU (Multiplex Network Body ECU)

      -

      -

      *a

      1 Connector

      -

      -
      B332794C67

      *A

      Main Body ECU (Multiplex Network Body ECU) with 2 Connectors

      -

      -

      *1

      Main Body ECU (Multiplex Network Body ECU)

      -

      -

      *a

      2 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

      MB-11 (GND1) - Body ground

      -

      Ground

      Always

      Below 1 Ω

      MB-30 (BECU) - Body ground

      -

      Battery power supply

      Always

      11 to 14 V

      MB-29 (ACC) - Body ground

      -

      ACC power supply

      Ignition switch ACC

      11 to 14 V

      MB-29 (ACC) - Body ground

      -

      ACC power supply

      Ignition switch off

      Below 1 V

      MB-32 (IG) - Body ground

      -

      Ignition switch power supply

      Ignition switch ON

      11 to 14 V

      MB-32 (IG) - Body ground

      -

      Ignition switch power supply

      Ignition switch off

      Below 1 V

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

    3. Reconnect the MB main body ECU (multiplex network body ECU) 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

      3E-1 (ACT-) - Body ground

      SB - Body ground

      Door lock motor unlock drive output (all door)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off

      Below 1 V

      3E-1 (ACT-) - Body ground

      SB - Body ground

      Door lock motor unlock drive output (all door)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder unlocked

      11 to 14 V

      3C-5 (ACT-) - Body ground

      SB - Body ground

      Door lock motor unlock drive output (all door)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off

      Below 1 V

      3C-5 (ACT-) - Body ground

      SB - Body ground

      Door lock motor unlock drive output (all door)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder unlocked

      11 to 14 V

      3E-2 (ACT-) - Body ground

      SB - Body ground

      Door lock motor unlock drive output (all door)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off

      Below 1 V

      3E-2 (ACT-) - Body ground

      SB - Body ground

      Door lock motor unlock drive output (all door)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder unlocked

      11 to 14 V

      3C-4 (ACT-) - Body ground

      LG - Body ground

      Door lock motor unlock drive output (all door)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off

      Below 1 V

      3C-4 (ACT-) - Body ground

      LG - Body ground

      Door lock motor unlock drive output (all door)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder unlocked

      11 to 14 V

      3C-13 (ACT+) - Body ground

      BE - Body ground

      Door lock motor lock drive output (all doors)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off

      Below 1 V

      3C-13 (ACT+) - Body ground

      BE - Body ground

      Door lock motor lock drive output (all doors)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder locked

      11 to 14 V

      3C-14 (ACT+) - Body ground

      R - Body ground

      Door lock motor lock drive output (all doors)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off

      Below 1 V

      3C-14 (ACT+) - Body ground

      R - Body ground

      Door lock motor lock drive output (all doors)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder locked

      11 to 14 V

      3E-8 (ACT+) - Body ground

      BE - Body ground

      Door lock motor lock drive output (all doors)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off

      Below 1 V

      3E-8 (ACT+) - Body ground

      BE - Body ground

      Door lock motor lock drive output (all doors)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder locked

      11 to 14 V

      3E-9 (ACT+) - Body ground

      R - Body ground

      Door lock motor lock drive output (all doors)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder off

      Below 1 V

      3E-9 (ACT+) - Body ground

      R - Body ground

      Door lock motor lock drive output (all doors)

      Door control switch (power window regulator master switch assembly) or driver door key cylinder locked

      11 to 14 V

      E22-19 (FRCY) - Body ground

      V - Body ground

      Front door courtesy light switch RH input

      Front door RH open

      Below 1 V

      E22-19 (FRCY) - Body ground

      V - Body ground

      Front door courtesy light switch RH input

      Front door RH closed

      Pulse generation

      3E-25 (FLCY) - Body ground

      W - Body ground

      Front door courtesy light switch LH input

      Front door LH open

      Below 1 V

      3E-25 (FLCY) - Body ground

      W - Body ground

      Front door courtesy light switch LH input

      Front door LH closed

      Pulse generation

      E22-24 (LCTY) - Body ground

      SB - Body ground

      Rear door courtesy light switch LH input

      Rear door LH open

      Below 1 V

      E22-24 (LCTY) - Body ground

      SB - Body ground

      Rear door courtesy light switch LH input

      Rear door LH closed

      Pulse generation

      E22-6 (RCTY) - Body ground

      LG - Body ground

      Rear door courtesy light switch RH input

      Rear door RH open

      Below 1 V

      E22-6 (RCTY) - Body ground

      LG - Body ground

      Rear door courtesy light switch RH input

      Rear door RH closed

      Pulse generation

      E22-9 (L1) - Body ground

      L - Body ground

      Door control switch input

      Door control switch locked

      Below 1 V

      E22-9 (L1) - Body ground

      L - Body ground

      Door control switch input

      Door control switch off

      Pulse generation

      E22-10 (UL1) - Body ground

      Y - Body ground

      Door control switch input

      Door control switch unlocked

      Below 1 V

      E22-10 (UL1) - Body ground

      Y - Body ground

      Door control switch input

      Door control switch off

      Pulse generation

      E22-11 (L2) - Body ground

      SB - Body ground

      Driver door key-linked lock input

      Driver door key cylinder turned to lock position

      Below 1 V

      E22-11 (L2) - Body ground

      SB - Body ground

      Driver door key-linked lock input

      Driver door key cylinder off

      Pulse generation

      E22-12 (UL2) - Body ground

      P - Body ground

      Driver door key-linked unlock input

      Driver door key cylinder turned to unlock position

      Below 1 V

      E22-12 (UL2) - Body ground

      P - Body ground

      Driver door key-linked unlock input

      Driver door key cylinder off

      Pulse generation

      E22-7 (LSFL) - Body ground*1

      Y - Body ground

      Front door LH unlock detection switch input

      Front door LH unlocked

      Below 1 V

      E22-7 (LSFL) - Body ground*1

      Y - Body ground

      Front door LH unlock detection switch input

      Front door LH locked

      Pulse generation

      E22-18 (LSFR) - Body ground*2

      LG - Body ground

      Front door RH unlock detection switch input

      Front door RH unlocked

      Below 1 V

      E22-18 (LSFR) - Body ground*2

      LG - Body ground

      Front door RH unlock detection switch input

      Front door RH locked

      Pulse generation

      3E-22 (LSR) - Body ground*3

      Y - Body ground

      Rear door RH unlock detection switch input

      Rear door RH or LH unlocked

      Below 1 V

      3E-22 (LSR) - Body ground*3

      Y - Body ground

      Rear door RH unlock detection switch input

      Rear door RH and LH locked

      Pulse generation

      3E-37 (LSR) - Body ground*3

      Y - Body ground

      Rear door LH unlock detection switch input

      Rear door LH or RH unlocked

      Below 1 V

      3E-37 (LSR) - Body ground*3

      Y - Body ground

      Rear door LH unlock detection switch input

      Rear door LH and RH locked

      Pulse generation

      3E-34 (BCTY) - Body ground

      LG - Body ground

      Luggage compartment door courtesy light switch input

      Luggage compartment door open

      Below 1 V

      3E-34 (BCTY) - Body ground

      LG - Body ground

      Luggage compartment courtesy light switch input

      Luggage compartment door closed

      11 to 14 V

      3E-39 (TR+) - Body ground

      P - Body ground

      Luggage compartment door lock motor unlock drive output

      Luggage door opening switch (open switch) pushed

      11 to 14 V

      3E-39 (TR+) - Body ground

      P - Body ground

      Luggage compartment door lock motor unlock drive output

      Luggage door opening switch (open switch) not pushed

      Below 1 V

      E22-17 (KSW) - Body ground*4

      V - Body ground

      Key unlock warning switch input

      No key in ignition key cylinder

      Pulse generation

      E22-17 (KSW) - Body ground*4

      V - Body ground

      Key unlock warning switch input

      Key in ignition key cylinder

      Below 1 V

      • *1: for LHD or with Entry and Start System

      • *2: for RHD or with Entry and Start System

      • *3: w/ Entry and Start System

      • *4: w/o Entry and Start System

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