WIRELESS DOOR LOCK CONTROL SYSTEM(w/ Entry and Start System) 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

      -

      -
      B332794C01

      *A

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

      -

      -

      *1

      Main Body ECU (Multiplex Network Body ECU)

      -

      -

      *a

      2 Connectors

      -

      -
      B332799C08

      *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

      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

      Engine switch on (ACC)

      11 to 14 V

      MB-29 (ACC) - Body ground

      -

      ACC power supply

      Engine switch off

      Below 1 V

      MB-32 (IG) - Body ground

      -

      Engine switch power supply

      Engine switch on (IG)

      11 to 14 V

      MB-32 (IG) - Body ground

      -

      Engine switch power supply

      Engine 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

      3E-25 (FLCY) - Body ground

      W - Body ground

      Front door LH courtesy light switch input

      Front door LH open

      Below 1 V

      3E-25 (FLCY) - Body ground

      W - Body ground

      Front door LH courtesy light switch input

      Front door LH closed

      Pulse generation

      E22-19 (FRCY) - Body ground

      V - Body ground

      Front door RH courtesy light switch input

      Front door RH open

      Below 1 V

      E22-19 (FRCY) - Body ground

      V - Body ground

      Front door RH courtesy light switch input

      Front door RH closed

      Pulse generation

      E22-24 (LCTY) - Body ground

      SB - Body ground

      Rear door LH courtesy light switch input

      Rear door LH open

      Below 1 V

      E22-24 (LCTY) - Body ground

      SB - Body ground

      Rear door LH courtesy light switch input

      Rear door LH closed

      Pulse generation

      E22-6 (RCTY) - Body ground

      LG - Body ground

      Rear door RH courtesy light switch input

      Rear door RH open

      Below 1 V

      E22-6 (RCTY) - Body ground

      LG - Body ground

      Rear door RH courtesy light switch input

      Rear door RH closed

      Pulse generation

      E22-7 (LSFL) - Body ground

      Y - Body ground

      Front door LH unlock detection switch input

      Front door LH unlocked

      Below 1 V

      E22-7 (LSFL) - Body ground

      Y - Body ground

      Front door LH unlock detection switch input

      Front door LH locked

      Pulse generation

      E22-18 (LSFR) - Body ground

      LG - Body ground

      Front door RH unlock detection switch input

      Front door RH unlocked

      Below 1 V

      E22-18 (LSFR) - Body ground

      LG - Body ground

      Front door RH unlock detection switch input

      Front door RH locked

      Pulse generation

      3E-22 (LSR) - Body ground

      Y - Body ground

      Rear door RH unlock detection switch input

      Rear door RH or LH unlocked

      Below 1 V

      3E-22 (LSR) - Body ground

      Y - Body ground

      Rear door RH unlock detection switch input

      Rear door RH and LH locked

      Pulse generation

      3E-37 (LSR) - Body ground

      Y - Body ground

      Rear door LH unlock detection switch input

      Rear door LH or RH unlocked

      Below 1 V

      3E-37 (LSR) - Body ground

      Y - Body ground

      Rear door LH unlock detection switch input

      Rear door LH and RH locked

      Pulse generation

      3A-56 (BZR) - Body ground

      L - Body ground

      Wireless door lock buzzer signal

      Wireless door lock buzzer off

      Below 1 V

      3A-56 (BZR) - Body ground

      L - Body ground

      Wireless door lock buzzer signal

      Wireless door lock buzzer on

      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 CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    1. Disconnect the E33 certification ECU (smart key ECU assembly) connector.

      B264892N38

    2. Measure the resistance and voltage 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

      E33-11 (E) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      E33-2 (+B) - Body ground

      L - Body ground

      Battery power supply

      Always

      11 to 14 V

      E33-10 (CUTB) - Body ground

      LG - Body ground

      Dark current cut fuse pin input signal

      Always

      11 to 14 V

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

    3. Reconnect the E33 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

      E35-5 (IG) - E33-11 (E)

      GR - W-B

      Engine switch power supply

      Engine switch on (IG)

      11 to 14 V

      Engine switch off

      Below 1 V

      E34-6 (CSEL) - E33-11 (E)

      L - W-B

      Communication channel switching circuit

      Engine switch off and all door closed

      Below 1 V → 4.5 to 6.0 V → Below 1 V

      E34-17 (RDAM) - E33-11 (E)

      Y - W-B

      RF Signal input circuit

      Engine switch off, all doors closed and electrical key transmitter sub-assembly switch not pressed → electrical key transmitter sub-assembly switch pressed

      11 to 14 V pulse generation at regular intervals → pulse generation

      E34-5 (RCO) - E33-11 (E)

      V - W-B

      Wireless tuner power supply output circuit

      Engine switch off, all doors closed and electrical key transmitter sub-assembly switch not pressed → electrical key transmitter sub-assembly switch pressed

      Below 1 V → 4.5 to 5.5 V

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

  3. CHECK DOOR CONTROL RECEIVER

    1. Disconnect the L35 door control receiver connector.

      B280754N05

    2. Measure the 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

      L35-1 (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 L35 door control receiver connector.

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

      Tester Connection

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      L35-2 (CSEL) - L35-1 (GND)

      L - W-B

      Communication channel switching circuit

      Engine switch off and all door closed

      Below 1 V → 4.5 to 6.0 V → Below 1 V

      L35-5 (DATA) - L35-1 (GND)

      Y - W-B

      Data output

      Engine switch off, all doors closed and electrical key transmitter sub-assembly switch not pressed → electrical key transmitter sub-assembly switch pressed

      Below 1 V → 10 to 16 V → Below 1 V

      L35-4 (+5) - L35-1 (GND)

      V - W-B

      Battery (power supply)

      Engine switch off, all doors closed and electrical key transmitter sub-assembly switch not pressed → electrical key transmitter sub-assembly switch pressed

      Below 1 V → 4.5 to 5.5 V

      • If the result is not as specified, the door control receiver may be malfunctioning.