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Home >> Toyota >> 2019 >> Corolla LE Eco >> Repair and Diagnosis >> External Pages >> Different car >> Section 129 (Wireless Door Lock Control System (W/ Smart Key) - Diagnostics - Introduction (Model Code: ZRE172)) >> WIRELESS DOOR LOCK CONTROL SYSTEM(w/ Smart Key System) >> Terminals Of Ecu [08/2013 - ] >> Terminals Of Ecu [08/2013 - ]
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Terminals Of Ecu [08/2013 - ]

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  1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    1. Disconnect the MB main body ECU (multiplex network body ECU) connector.
      Fig 1: MB main body ECU (multiplex network body ECU) Connector Terminal Identification (1 Of 2)
      GTY450378Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Main Body ECU (Multiplex Network Body ECU) with 1 Connector - -
      *1 Main Body ECU (Multiplex Network Body ECU) - -
      *a 1 Connector - -
      Fig 2: MB main body ECU (multiplex network body ECU) Connector Terminal Identification (2 Of 2)
      GTY453727Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *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.

      HINT: 

      Measure the values on the wire harness side with the connector 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
      3C-5 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (except driver door) Door control switch or driver door key cylinder off Below 1 V
      3C-5 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (except driver door) Door control switch or driver door key cylinder unlocked 11 to 14 V
      3E-1 (ACT-) - Body ground SB - Body ground Door lock motor unlock drive output (except driver door) Door control switch or driver door key cylinder off Below 1 V
      3E-1 (ACT-) - Body ground SB - Body ground Door lock motor unlock drive output (except driver door) Door control switch or driver door key cylinder unlocked 11 to 14 V
      3E-2 (ACT-) - Body ground SB - Body ground Door lock motor unlock drive output (except driver door) Door control switch or driver door key cylinder off Below 1 V
      3E-2 (ACT-) - Body ground SB - Body ground Door lock motor unlock drive output (except driver door) Door control switch or driver door key cylinder unlocked 11 to 14 V
      3C-12 (ACTD) - Body ground LG - Body ground Door lock motor unlock drive output (for driver door) Door control switch or driver door key cylinder off Below 1 V
      3C-12 (ACTD) - Body ground LG - Body ground Door lock motor unlock drive output (for driver door) Door control switch or driver door key cylinder unlocked 11 to 14 V
      3C-14 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Door control switch 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 or driver door key cylinder locked 11 to 14 V
      3C-13 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Door control switch or driver door key cylinder off Below 1 V
      3C-13 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Door control switch or driver door key cylinder locked 11 to 14 V
      3E-8 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Door control switch or driver door key cylinder off Below 1 V
      3E-8 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Door control switch 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 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 or driver door key cylinder locked 11 to 14 V
      E31-19 (FRCY) - Body ground V - Body ground Front door courtesy light switch assembly (for RH) input Front door RH open Below 1 V
      E31-19 (FRCY) - Body ground V - Body ground Front door courtesy light switch assembly (for RH) input Front door RH closed Pulse generation
      3E-34 (FLCY) - Body ground W - Body ground Front door courtesy light switch assembly (for LH) input Front door LH open Below 1 V
      3E-34 (FLCY) - Body ground W - Body ground Front door courtesy light switch assembly (for LH) input Front door LH closed Pulse generation
      E31-1 (LCTY) - Body ground SB - Body ground Rear door courtesy light switch assembly (for LH) input Rear door LH open Below 1 V
      E31-1 (LCTY) - Body ground SB - Body ground Rear door courtesy light switch assembly (for LH) input Rear door LH closed Pulse generation
      E31-6 (RCTY) - Body ground LG - Body ground Rear door courtesy light switch assembly (for RH) input Rear door RH open Below 1 V
      E31-6 (RCTY) - Body ground LG - Body ground Rear door courtesy light switch assembly (for RH) input Rear door RH closed Pulse generation
      E31-7 (LSFL) - Body ground Y - Body ground Front door LH unlock detection switch input Front door LH unlocked Below 1 V
      E31-7 (LSFL) - Body ground Y - Body ground Front door LH unlock detection switch input Front door LH locked Pulse generation
      E31-18 (LSFR) - Body ground LG - Body ground Front door RH unlock detection switch input Front door RH unlocked Below 1 V
      E31-18 (LSFR) - Body ground LG - Body ground Front door RH unlock detection switch input Front door RH locked Pulse generation
      3E-39 (LSR) - Body ground Y - Body ground Rear door RH unlock detection switch input Rear door RH or LH unlocked Below 1 V
      3E-39 (LSR) - Body ground Y - Body ground Rear door RH unlock detection switch input Rear door RH and LH locked Pulse generation
      3E-24 (LSR) - Body ground Y - Body ground Rear door LH unlock detection switch input Rear door LH or RH unlocked Below 1 V
      3E-24 (LSR) - Body ground Y - Body ground Rear door LH unlock detection switch input Rear door LH and RH locked Pulse generation
      3E-38 (LGCY) - Body ground LG - Body ground Luggage door courtesy light switch input Luggage compartment door open Below 1 V
      3E-38 (LGCY) - Body ground LG - Body ground Luggage door courtesy light switch input Luggage compartment door closed 11 to 14 V
      3A-53 (BZR) - Body ground L - Body ground Wireless door lock buzzer signal Wireless door lock buzzer off Below 1 V
      3A-53 (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 driver side junction block assembly may be malfunctioning.

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    1. Disconnect the E57 certification ECU (smart key ECU assembly) connector.
      Fig 3: E57 Certification ECU (Smart Key ECU Assembly) Connector End Views
      GTY440996Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance and voltage according to the value(s) in the table below.

      HINT: 

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      E57-11 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E57-2 (+B) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      • If the result is not as specified, there may be a malfunction in the wire harness.
    3. Reconnect the E57 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
      E58-5 (RCO) - E57-11 (E) V - W-B Output to door control receiver
      (Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      		 Pulse generation
      (See waveform 1)
      E58-6 (CSEL) - E57-11 (E) L - W-B Communication channel switching circuit Procedure:
      1. Engine switch off
      2. All doors closed
      		 Below 1 V → 4.5 to 6 V → Below 1 V
      E58-17 (RDAM) - E57-11 (E) Y - W-B Door control receiver verifies data received from electrical key transmitter sub-assembly.
      Door control receiver sends data from electrical key transmitter sub-assembly to certification ECU (smart key ECU assembly) (Door control receiver intermittently grounds 12 V signal from certification ECU (smart key ECU assembly)).      		 Procedure:
      1. Engine switch off
      2. All doors locked
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      		 Pulse generation
      (See waveform 2)
      • If the result is not as specified, the certification ECU (smart key ECU assembly) may be malfunctioning.
    5. Using an oscilloscope, check waveform 1.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      GTY376258Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed
      WAVEFORM 1 (REFERENCE)

      Item Content
      Tester connection E58-5 (RCO) - E57-11 (E)
      Tool setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
    6. Using an oscilloscope, check waveform 2.

      HINT: 

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      GTY367752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed
      WAVEFORM 2 (REFERENCE)

      Item Content
      Tester connection E58-17 (RDAM) - E57-11 (E)
      Tool setting 5 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Engine switch off
      2. All doors locked
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
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