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.

      A012G06C01
      *A Main Body ECU (Multiplex Network Body ECU) with 1 Connector - -
      *1 Main Body ECU (Multiplex Network Body ECU) - -
      *a 1 Connector - -
      A012HG1C01
      *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -
      *1 Main Body ECU (Multiplex Network Body ECU) - -
      *a 2 Connectors - -
      A012HVNC08
      *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.

      Tech Tips

      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.

      A012LZWN38

    2. Measure the resistance and voltage 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
      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.

      A012FEJN05

    2. Measure the 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
      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.