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Terminals Of Ecu

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    1. Disconnect the D25 certification ECU (smart key ECU assembly) connector.
      Fig 1: Certification ECU (Smart Key ECU Assembly) W/ Smart Key System Connector Terminals Identification
      GTY251704Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 connector disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D25-1 (+B) - Body ground G - Body ground +B power supply Always 11 to 14 V
      D25-15 (E) - Body ground B - Body ground Ground Always Below 1 Ω
      D25-17 (CUTB) - Body ground L - 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 D25 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
      D25-3 (CLG1) - D25-15 (E) G - B Door electrical key oscillator (for driver side) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      		 No pulse generation
      D25-3 (CLG1) - D25-15 (E) G - B Door electrical key oscillator (for driver side) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      D25-4 (CG1B) - D25-15 (E) R - B Door electrical key oscillator (for driver side) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      		 No pulse generation
      D25-4 (CG1B) - D25-15 (E) R - B Door electrical key oscillator (for driver side) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      D25-5 (CLG2) - D25-15 (E) P - B Door electrical key oscillator (for front passenger side) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      		 No pulse generation
      D25-5 (CLG2) - D25-15 (E) P - B Door electrical key oscillator (for front passenger side) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      D25-6 (CG2B) - D25-15 (E) V - B Door electrical key oscillator (for front passenger side) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      		 No pulse generation
      D25-6 (CG2B) - D25-15 (E) V - B Door electrical key oscillator (for front passenger side) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      D25-7 (CLG5) - D25-15 (E) BR - B Indoor electrical key oscillator (for front floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D25-7 (CLG5) - D25-15 (E) BR - B Indoor electrical key oscillator (for front floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D25-8 (CG5B) - D25-15 (E) R - B Indoor electrical key oscillator (for front floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D25-8 (CG5B) - D25-15 (E) R - B Indoor electrical key oscillator (for front floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D25-16 (IG) - Body ground R - Body ground IG power supply Engine switch off Below 1 V
      D25-16 (IG) - Body ground R - Body ground IG power supply Engine switch on (IG) 11 to 14 V
      D25-18 (TSW1) - D25-15 (E) R - B Lock sensor (for driver side) detection signal
      • Engine switch off
      • All door closed
      • Lock sensor (for driver side) not touched
      		 Pulse generation
      D25-18 (TSW1) - D25-15 (E) R - B Lock sensor (for driver side) detection signal
      • Engine switch off
      • All door closed
      • Lock sensor (for driver side) touched
      		 Below 2 V
      D25-19 (TSW2) - D25-15 (E) Y - B Lock sensor (for front passenger side) detection signal
      • Engine switch off
      • All door closed
      • Lock sensor (for front passenger side) not touched
      		 Pulse generation
      D25-19 (TSW2) - D25-17 (E) Y - B Lock sensor (for front passenger side) detection signal
      • Engine switch off
      • All door closed
      • Lock sensor (for front passenger side) touched
      		 Below 2 V
      D25-20 (SEN1) - D25-15 (E) LG - B Touch sensor (for driver side) detection signal
      • Engine switch off
      • All door closed
      • Key not in detection area
      • Touch sensor (for driver side) not touched
      		 Pulse generation
      D25-20 (SEN1) - D25-15 (E) LG - B Touch sensor (for driver side) detection signal
      • Engine switch off
      • All door closed
      • Key not in detection area
      • Touch sensor (for driver side) touched
      		 Below 2 V
      D25-20 (SEN2) - D25-15 (E) R - B Touch sensor (for front passenger side) detection signal
      • Engine switch off
      • All door closed
      • Key not in detection area
      • Touch sensor (for front passenger side) not touched
      		 Pulse generation
      D25-20 (SEN2) - D25-15 (E) R - B Touch sensor (for front passenger side) detection signal
      • Engine switch off
      • All door closed
      • Key not in detection area
      • Touch sensor (for front passenger side) touched
      		 Below 2 V
      D25-22 (TSW5) - D25-15 (E) G - B Back door opener switch assembly (opener switch) signal Back door opener switch assembly (opener switch) not pushed Pulse generation
      D25-22 (TSW5) - D25-15 (E) G - B Back door opener switch assembly (opener switch) signal Back door opener switch assembly (opener switch) pushed Below 1 V
      D25-1 (TSW6) - D25-15 (E) SB - B Back door opener switch assembly (lock switch) signal Back door opener switch assembly (lock switch) not pushed Pulse generation
      D25-1 (TSW6) - D25-15 (E) SB - B Back door opener switch assembly (lock switch) signal Back door opener switch assembly (lock switch) pushed Below 1 V
      D25-24 (CLG6) - D25-15 (E) R - B Indoor electrical key oscillator (for center floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D25-24 (CLG6) - D25-15 (E) R - B Indoor electrical key oscillator (for center floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D25-25 (CG6B) - D25-15 (E) G - B Indoor electrical key oscillator (for center floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D25-25 (CG6B) - D25-15 (E) G - B Indoor electrical key oscillator (for center floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D25-26 (CLG7) - D25-15 (E) L - B Indoor electrical key oscillator (for rear floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D25-26 (CLG7) - D25-15 (E) L - B Indoor electrical key oscillator (for rear floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D25-27 (CG7B) - D25-15 (E) LG - B Indoor electrical key oscillator (for rear floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D25-27 (CG7B) - D25-15 (E) LG - B Indoor electrical key oscillator (for rear floor) sensor signal
      • Engine switch off
      • All door closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D25-32 (POS1) - D25-15 (E) Y - B Lock or unlock sensor (for driver side) output signal Engine switch off 9 to 14 V
      D25-32 (POS1) - D25-15 (E) Y - B Lock or unlock sensor (for driver side) output signal Engine switch on (IG) Below 2 V
      D25-33 (POS2) - D25-15 (E) L - B Lock or unlock sensor (for front passenger side) output signal Engine switch off 9 to 14 V
      D25-33 (POS2) - D25-15 (E) L - B Lock or unlock sensor (for front passenger side) output signal Engine switch on (IG) Below 2 V
      D26-5 (RC0) - D25-15 (E) Y - B Door control receiver power source
      • Engine switch off
      • Lock or unlock switch on key not pushed
      		 Below 1 V
      D26-5 (RC0) - D25-15 (E) Y - B Door control receiver power source
      • Engine switch off
      • Lock or unlock switch on key pushed
      		 4.5 to 5.5 V
      D26-15 (RDA) - D25-15 (E) R - B Door control receiver data input signal
      • Engine switch off
      • All doors closed
      • Transmitter switch not pressed
      		 11 to 14 V pulse generation at regular intervals
      D26-15 (RDA) - D25-15 (E) R - B Door control receiver data input signal
      • Engine switch off
      • All doors closed
      • Transmitter switch pressed
      		 Pulse generation
      D26-16 (RSSI) - D25-15 (E) P - B Door control receiver electric wave existence signal
      • Engine switch off
      • All doors locked
      • Lock or unlock switch on key not pushed
      		 11 to 14 V
      D26-16 (RSSI) - D25-15 (E) P - B Door control receiver electric wave existence signal
      • Engine switch off
      • All doors locked
      • Lock or unlock switch on key pushed
      		 Below 2 V
      D26-19 (CLG8) - D25-15 (E) L - B Outside electrical key oscillator (for rear side) sensor signal
      • Engine switch off
      • All doors closed
      • Back door opener switch assembly off
      		 No pulse generation
      D26-19 (CLG8) - D25-15 (E) L - B Outside electrical key oscillator (for rear side) sensor signal
      • Engine switch off
      • All doors closed
      • Back door opener switch assembly on
      		 Pulse generation
      D26-20 (CG8B) - D25-15 (E) Y - B Outside electrical key oscillator (for rear side) sensor signal
      • Engine switch off
      • All doors closed
      • Back door opener switch assembly off
      		 No pulse generation
      D26-20 (CG8B) - D25-15 (E) Y - B Outside electrical key oscillator (for rear side) sensor signal
      • Engine switch off
      • All doors closed
      • Back door opener switch assembly on
      		 Pulse generation

      If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.

  2. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the 2C and 2F main body ECU (driver side junction block assembly) connectors.
      Fig 2: Main Body ECU (Driver Side Junction Block Assembly) Connector Terminal Identification
      GTY251688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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
      2C-24 (BECU) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      2C-30 (ALTB) - Body ground BR - Body ground Battery power supply Always 11 to 14 V
      2F-16 (GND1) - 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 2C and 2F main body ECU (driver side junction block assembly) connectors.
    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
      D50-24 (DCTY) - Body ground V - Body ground Driver side door courtesy switch input Driver door open Below 1 V
      D50-24 (DCTY) - Body ground V - Body ground Driver side door courtesy switch input Driver door close Pulse generation
      D49-21 (PCTY) - Body ground V - Body ground Front passenger side door courtesy switch input Front passenger side door open Below 1 V
      D49-21 (PCTY) - Body ground V - Body ground Front passenger side door courtesy switch input Front passenger side door close Pulse generation
      2O-19 (LCTY) - Body ground R - Body ground Rear door LH courtesy light switch input Rear door LH open Below 1 V
      2O-19 (LCTY) - Body ground R - Body ground Rear door LH courtesy light switch input Rear door LH close Pulse generation
      D49-7 (RCTY) - Body ground GR - Body ground Rear door RH courtesy light switch input Rear door RH open Below 1 V
      D49-7 (RCTY) - Body ground GR - Body ground Rear door RH courtesy light switch input Rear door RH close Pulse generation
      D49-25 (BCTY) - Body ground*1 GR - Body ground Back door courtesy light switch input Back door open Below 1 V
      D49-25 (BCTY) - Body ground*1 GR - Body ground Back door courtesy light switch input Back door courtesy light switch on and back door closed Pulse generation
      D49-25 (BCTY) - Body ground*1 GR - Body ground Back door courtesy light switch input Back door open Below 1 V
      D49-25 (BCTY) - Body ground*1 GR - Body ground Back door courtesy light switch input Back door courtesy light switch off and back door closed Pulse generation
      D49-25 (BCTY) - Body ground*2 GR - Body ground Back door courtesy light switch input Back door open Below 1 V
      D49-25 (BCTY) - Body ground*2 GR - Body ground Back door courtesy light switch input Back door closed Pulse generation
      2K-2 (ACT+) - Body Ground R - Body Ground Door lock motor lock drive output (Driver side) Power window regulator master switch assembly or driver door key cylinder off Below 1 V
      2K-2 (ACT+) - Body Ground R - Body Ground Door lock motor lock drive output (Driver side) Power window regulator master switch assembly or driver door key cylinder lock 11 to 14 V
      D50-5 (ACTD) - Body Ground LG - Body Ground Door lock motor unlock drive output (Driver side) Power window regulator master switch assembly or driver door key cylinder off Below 1 V
      D50-5 (ACTD) - Body Ground LG - Body Ground Door lock motor unlock drive output (Driver side) Power window regulator master switch assembly or driver door key cylinder unlock 11 to 14 V
      2J-1 (ACT+) - Body Ground R - Body Ground Door lock motor lock drive output (Front passenger side) Power window regulator master switch assembly or driver door key cylinder off Below 1 V
      2J-1 (ACT+) - Body Ground R - Body Ground Door lock motor lock drive output (Front passenger side) Power window regulator master switch assembly or driver door key cylinder lock 11 to 14 V
      2J-2 (ACT-) - Body Ground SB - Body Ground Door lock motor unlock drive output (Front passenger side) Power window regulator master switch assembly off Below 1 V
      2J-2 (ACT-) - Body Ground SB - Body Ground Door lock motor unlock drive output (Front passenger side) Power window regulator master switch assembly unlock 11 to 14 V
      2F-11 (ACT+) - Body Ground LG - Body Ground Door lock motor lock drive output (Rear right door) Power window regulator master switch assembly or driver door key cylinder off Below 1 V
      2F-11 (ACT+) - Body Ground LG - Body Ground Door lock motor lock drive output (Rear right door) Power window regulator master switch assembly or driver door key cylinder lock 11 to 14 V
      2F-30 (ACT-) - Body Ground R- Body Ground Door lock motor unlock drive output (Rear right door) Power window regulator master switch assembly off Below 1 V
      2F-30 (ACT-) - Body Ground R- Body Ground Door lock motor unlock drive output (Rear right door) Power window regulator master switch assembly unlock 11 to 14 V
      2O-17 (ACT+) - Body Ground GR - Body Ground Door lock motor lock drive output (Rear left door) Power window regulator master switch assembly or driver door key cylinder off Below 1 V
      2O-17 (ACT+) - Body Ground GR - Body Ground Door lock motor lock drive output (Rear left door) Power window regulator master switch assembly or driver door key cylinder lock 11 to 14 V
      2O-6 (ACT-) - Body Ground R - Body Ground Door lock motor unlock drive output (Rear left door) Power window regulator master switch assembly off Below 1 V
      2O-6 (ACT-) - Body Ground R - Body Ground Door lock motor unlock drive output (Rear left door) Power window regulator master switch assembly unlock 11 to 14 V
      D50-9 (LSWD) - Body Ground P - Body Ground Driver side door position switch input Driver door unlock Below 1 V
      D50-9 (LSWD) - Body Ground P - Body Ground Driver side door position switch input Driver door lock Pulse generation
      D49-27 (LSWP) - Body ground P - Body ground Front passenger side door lock position switch input Front passenger side door unlock Below 1 V
      D49-27 (LSWP) - Body ground P - Body ground Front passenger side door lock position switch input Front passenger side door lock Pulse generation
      2O-5 (LSR) - Body ground BR - Body ground Rear door LH lock position switch input Rear door LH unlock Below 1 V
      2O-5 (LSR) - Body ground BR - Body ground Rear door LH lock position switch input Rear door LH lock Pulse generation
      2F-5 (LSR) - Body ground Y - Body ground Rear door RH lock position switch input Rear door RH unlock Below 1 V
      2F-5 (LSR) - Body ground Y - Body ground Rear door RH lock position switch input Rear door RH lock Pulse generation
      • *1: w/o Back Door Closer System
      • *2: w/ Back Door Closer System

      If the result is not as specified, the main body ECU (driver side junction block assembly) may have a malfunction.

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