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Terminals Of Ecu

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    1. Disconnect the F50 certification ECU (smart key ECU assembly) connector.
      Fig 1: Certification ECU Connector Terminal Identification (Smart Key ECU Assembly)
      GTY274656Courtesy 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
      F50-1 (+B) - Body ground R - Body ground +B power supply Always 11 to 14 V
      F50-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F50-17 (CUTB) - Body ground GR - 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 F50 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
      F50-3 (CLG1) - F50-15 (E) LG - W-B Door electrical key oscillator (for driver side) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      		 No pulse generation
      F50-3 (CLG1) - F50-15 (E) LG - W-B Door electrical key oscillator (for driver side) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      F50-4 (CG1B) - F50-15 (E) L - W-B Door electrical key oscillator (for driver side) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      		 No pulse generation
      F50-4 (CG1B) - F50-15 (E) L - W-B Door electrical key oscillator (for driver side) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      F50-5 (CLG2) - F50-15 (E) GR - W-B Door electrical key oscillator (for front passenger side) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      		 No pulse generation
      F50-5 (CLG2) - F50-15 (E) GR - W-B Door electrical key oscillator (for front passenger side) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      F50-6 (CG2B) - F50-15 (E) BR - W-B Door electrical key oscillator (for front passenger side) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      		 No pulse generation
      F50-6 (CG2B) - F50-15 (E) BR - W-B Door electrical key oscillator (for front passenger side) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      F50-7 (CLG5) - F50-15 (E) R - W-B Indoor electrical key oscillator (for front floor) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      F50-7 (CLG5) - F50-15 (E) R - W-B Indoor electrical key oscillator (for front floor) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      F50-8 (CG5B) - F50-15 (E) W - W-B Indoor electrical key oscillator (for front floor) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      F50-8 (CG5B) - F50-15 (E) W - W-B Indoor electrical key oscillator (for front floor) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      F50-16 (IG) - Body ground W - Body ground IG power supply Power switch off Below 1 V
      F50-16 (IG) - Body ground W - Body ground IG power supply Power switch on (IG) 11 to 14 V
      F50-18 (TSW1) - F50-15 (E) R - W-B Lock sensor (for driver side) detection signal
      • Power switch off
      • All doors closed
      • Lock sensor (for driver side) not touched
      		 Pulse generation
      F50-18 (TSW1) - F50-15 (E) R - W-B Lock sensor (for driver side) detection signal
      • Power switch off
      • All doors closed
      • Lock sensor (for driver side) touched
      		 Below 2 V
      F50-19 (TSW2) - F50-15 (E) Y - W-B Lock sensor (for front passenger side) detection signal
      • Power switch off
      • All doors closed
      • Lock sensor (for front passenger side) not touched
      		 Pulse generation
      F50-19 (TSW2) - F50-15 (E) Y - W-B Lock sensor (for front passenger side) detection signal
      • Power switch off
      • All doors closed
      • Lock sensor (for front passenger side) touched
      		 Below 2 V
      F50-20 (SEN1) - F50-15 (E) SB - W-B Touch sensor (for driver side) detection signal
      • Power switch off
      • All doors closed
      • Key not in detection area
      • Touch sensor (for driver side) not touched
      		 Pulse generation
      F50-20 (SEN1) - F50-15 (E) SB - W-B Touch sensor (for driver side) detection signal
      • Power switch off
      • All doors closed
      • Key not in detection area
      • Touch sensor (for driver side) touched
      		 Below 2 V
      F50-21 (SEN2) - F50-15 (E) P - W-B Touch sensor (for front passenger side) detection signal
      • Power switch off
      • All doors closed
      • Key not in detection area
      • Touch sensor (for front passenger side) not touched
      		 Pulse generation
      F50-21 (SEN2) - F50-15 (E) P - W-B Touch sensor (for front passenger side) detection signal
      • Power switch off
      • All doors closed
      • Key not in detection area
      • Touch sensor (for front passenger side) touched
      		 Below 2 V
      F50-22 (TSW5) - F50-15 (E) P - W-B Luggage compartment door opener outer switch signal Luggage compartment door opener outer switch not pushed Pulse generation
      F50-22 (TSW5) - F50-15 (E) P - W-B Luggage compartment door opener outer switch signal Luggage compartment door opener outer switch pushed Below 1 V
      F50-24 (CLG6) - F50-15 (E) Y - W-B Indoor electrical key oscillator (for rear floor) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      F50-24 (CLG6) - F50-15 (E) Y - W-B Indoor electrical key oscillator (for rear floor) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      F50-25 (CG6B) - F50-15 (E) G - W-B Indoor electrical key oscillator (for rear floor) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      F50-25 (CG6B) - F50-15 (E) G - W-B Indoor electrical key oscillator (for rear floor) sensor signal
      • Power switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      F50-26 (CLG7) - F50-15 (E) R - W-B Indoor electrical key oscillator (for luggage compartment) sensor signal
      • Power switch off
      • All doors closed
      • Key not in luggage compartment
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      F50-26 (CLG7) - F50-15 (E) R - W-B Indoor electrical key oscillator (for luggage compartment) sensor signal
      • Power switch off
      • All doors closed
      • Key not in luggage compartment
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      F50-27 (CG7B) - F50-15 (E) W - W-B Indoor electrical key oscillator (for luggage compartment) sensor signal
      • Power switch off
      • All doors closed
      • Key not in luggage compartment
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      F50-27 (CG7B) - F50-15 (E) W - W-B Indoor electrical key oscillator (for luggage compartment) sensor signal
      • Power switch off
      • All doors closed
      • Key not in luggage compartment
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      F50-32 (POS1) - F50-15 (E) V - W-B Lock or unlock sensor (for driver side) output signal Power switch off 9 to 14 V
      F50-32 (POS1) - F50-15 (E) V - W-B Lock or unlock sensor (for driver side) output signal Power switch on (IG) Below 2 V
      F50-33 (POS2) - F50-15 (E) B - W-B Lock or unlock sensor (for front passenger side) output signal Power switch off 9 to 14 V
      F50-33 (POS2) - F50-15 (E) B - W-B Lock or unlock sensor (for front passenger side) output signal Power switch on (IG) Below 2 V
      F49-5 (RC0) - F50-15 (E) G - W-B Door control receiver power source
      • Power switch off
      • Lock or unlock switch on key not pushed
      		 Below 1 V
      F49-5 (RC0) - F50-15 (E) G - W-B Door control receiver power source
      • Power switch off
      • Lock or unlock switch on key pushed
      		 4.5 to 5.5 V
      F49-15 (RDA) - F50-15 (E) L - W-B Door control receiver data input signal Power switch off Pulse between 11 to 14 V occurs regularly
      F49-16 (RSSI) - F50-15 (E) R - W-B Door control receiver electric wave existence signal
      • Power switch off
      • All doors locked
      • Lock or unlock switch on key not pushed
      		 11 to 14 V
      F49-16 (RSSI) - F50-15 (E) R - W-B Door control receiver electric wave existence signal
      • Power switch off
      • All doors locked
      • Lock or unlock switch on key pushed
      		 Below 2 V
      F49-19 (CLG8) - F50-15 (E) V - W-B Outside electrical key oscillator (for luggage compartment) sensor signal
      • Power switch off
      • All doors closed
      • luggage compartment door opener outer switch off
      		 No pulse generation
      F49-19 (CLG8) - F50-15 (E) V - W-B Outside electrical key oscillator (for luggage compartment) sensor signal
      • Power switch off
      • All doors closed
      • luggage compartment door opener outer switch on
      		 Pulse generation
      F49-20 (CG8B) - F50-15 (E) P - W-B Outside electrical key oscillator (for luggage compartment) sensor signal
      • Power switch off
      • All doors closed
      • luggage compartment door opener outer switch off
      		 No pulse generation
      F49-20 (CG8B) - F50-15 (E) P - W-B Outside electrical key oscillator (for luggage compartment) sensor signal
      • Power switch off
      • All doors closed
      • Luggage compartment door opener outer switch on
      		 Pulse generation

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

  2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    1. Disconnect the 2C, F7 and 2B junction block connectors.
      Fig 2: Instrument Panel Junction Block Assembly And Main Body ECU Connector Terminal Identification (Multiplex Network Body ECU)
      GTY287697Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the MB main body ECU (multiplex network body ECU) connector.
    3. 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 connectors disconnected.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2B-6 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      2C-18 (BECU) - Body ground R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      F7-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      MB-29 (ACC) - Body ground - ACC power supply Power switch on (ACC) 11 to 14 V
      MB-29 (ACC) - Body ground - ACC power supply Power switch off Below 1 V
      MB-31 (ALTB) - Body ground - Auxiliary battery power supply Power switch off 11 to 14 V
      MB-32 (IG) - Body ground - Power switch power supply Power switch on (IG) 11 to 14 V
      MB-32 (IG) - Body ground - Power switch power supply Power switch off Below 1 V

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

    4. Reconnect the 2C, F7 and 2B junction block connectors.
    5. Reconnect the MB main body ECU (multiplex network body ECU) connector.
    6. Measure the voltage according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2A-47 (GSW) - Body ground B - Body ground Center airbag sensor signal (collision detection signal) Power switch on (IG) with center airbag sensor assembly connector disconnected 4.5 to 5.5 V
      2B-1 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (except driver side) Multiplex network master switch (door control switch) or driver door key cylinder off Below 1 V
      2B-1 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (except driver side) Multiplex network master switch (door control switch) or driver door key cylinder unlocked 11 to 14 V
      2B-8 (ACT+) - Body ground W - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch (door control switch) or driver door key cylinder off Below 1 V
      2B-8 (ACT+) - Body ground W - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch (door control switch) or driver door key cylinder locked 11 to 14 V
      2B-5 (ACTD) - Body ground LG - Body ground Driver door lock motor unlock drive output Multiplex network master switch (door control switch) or driver door key cylinder off Below 1 V
      2B-5 (ACTD) - Body ground LG - Body ground Driver door lock motor unlock drive output Multiplex network master switch (door control switch) or driver door key cylinder unlocked 11 to 14 V
      2B-31 (FRCY) - Body ground R - Body ground Front passenger door courtesy switch input Front passenger door open Below 1 V
      2B-31 (FRCY) - Body ground R - Body ground Front passenger door courtesy switch input Front passenger door closed 11 to 14 V
      2B-13 (FLCY) - Body ground L - Body ground Driver door courtesy switch input Driver door open Below 1 V
      2B-13 (FLCY) - Body ground L - Body ground Driver door courtesy switch input Driver door closed 11 to 14 V
      2D-25 (LSR) - Body ground GR - Body ground Rear door LH lock position switch input Rear door LH unlocked Below 1 V
      2D-25 (LSR) - Body ground GR - Body ground Rear door LH lock position switch input Power switch off, all doors closed and rear door LH locked Pulse generation
      F8-3 (LCTY) - Body ground LG - Body ground Rear door LH courtesy light switch input Rear door LH open Below 1 V
      F8-3 (LCTY) - Body ground LG - Body ground Rear door LH courtesy light switch input Rear door LH closed Pulse generation
      F9-6 (RCTY) - Body ground GR - Body ground Rear door RH courtesy light switch input Rear door RH open Below 1 V
      F9-6 (RCTY) - Body ground GR - Body ground Rear door RH courtesy light switch input Rear door RH closed Pulse generation
      F9-7 (LSFL) - Body ground P - Body ground Driver door lock position switch input Driver door unlocked Below 1 V
      F9-7 (LSFL) - Body ground P - Body ground Driver door lock position switch input Power switch off, all doors closed and driver door locked Pulse generation
      F9-9 (L1) - Body ground L - Body ground Front passenger door control switch input Front passenger door control switch locked Below 1 V
      F9-9 (L1) - Body ground L - Body ground Front passenger door control switch input Front passenger door control switch off Pulse generation
      F9-10 (UL1) - Body ground SB - Body ground Front passenger door control switch input Front passenger door control switch unlocked Below 1 V
      F9-10 (UL1) - Body ground SB - Body ground Front passenger door control switch input Front passenger door control switch off Pulse generation
      F9-11 (L2) - Body ground GR - Body ground Driver door key-linked lock input Driver door key cylinder turned to lock Below 1 V
      F9-11 (L2) - Body ground GR - Body ground Driver door key-linked lock input Driver door key cylinder off 11 to 14 V
      F9-18 (LSFR) - Body ground LG - Body ground Front passenger door lock position switch input Front passenger door unlocked Below 1 V
      F9-18 (LSFR) - Body ground LG - Body ground Front passenger door lock position switch input Power switch off, all doors closed and front passenger door locked Pulse generation
      F9-19 (LGCY) - Body ground SB - Body ground Luggage compartment door courtesy light switch input Luggage compartment door open Below 1 V
      F9-19 (LGCY) - Body ground SB - Body ground Luggage compartment door courtesy light switch input Luggage compartment door closed 11 to 14 V
      F9-24 (UL3) - Body ground BR - Body ground Driver door key-linked unlock input Driver door key cylinder turned to unlock Below 1 V
      F9-24 (UL3) - Body ground BR - Body ground Driver door key-linked unlock input Driver door key cylinder off Pulse generation
      F7-2 (LSWR) - Body ground L - Body ground Rear right door lock position switch input Rear right door unlocked Below 1 V
      F7-2 (LSWR) - Body ground L - Body ground Rear right door lock position switch input Power switch off, all doors closed and rear right door locked 11 to 14 V

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

  3. COMBINATION METER ASSEMBLY 
    1. Disconnect the F4 combination meter assembly connector.
      Fig 3: Combination Meter Assembly Connector Terminal Identification
      GTY267708Courtesy 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
      F4-22 (B) - Body ground V - Body ground Battery Power switch off 11 to 14 V
      F4-33 (EP) - 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 F4 combination meter assembly connector.
    4. Measure the voltage according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F4-21 (IG2) - Body ground BR - Body ground Power switch signal Power switch off Below 1 V
      F4-21 (IG2) - Body ground BR - Body ground Power switch signal Power switch on (IG) 11 to 14 V

      If the result is not as specified, the combination meter assembly may have a malfunction.

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