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Terminals Of Ecu

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    1. Disconnect the D88 certification ECU (smart key ECU assembly) connector.
      Fig 1: Certification ECU (Smart Key ECU Assembly) Connector Terminal Identification
      GTY298078Courtesy 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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D88-1 (+B) - Body ground G - Body ground +B power supply Always 11 to 14 V
      D88-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      D88-17 (CUTB) - Body ground B - 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 D88 certification ECU (smart key ECU assembly) connector.
    4. Measure the voltage and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D88-3 (CLG1) - D88-15 (E) G - W-B Door electrical key oscillator (for driver side) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      		 No pulse generation
      D88-3 (CLG1) - D88-15 (E) G - W-B Door electrical key oscillator (for driver side) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      D88-4 (CG1B) - D88-15 (E) R - W-B Door electrical key oscillator (for driver side) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      		 No pulse generation
      D88-4 (CG1B) - D88-15 (E) R - W-B Door electrical key oscillator (for driver side) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      D88-5 (CLG2) - D88-15 (E) P - W-B Door electrical key oscillator (for front passenger side) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      		 No pulse generation
      D88-5 (CLG2) - D88-15 (E) P - W-B Door electrical key oscillator (for front passenger side) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      D88-6 (CG2B) - D88-15 (E) V - W-B Door electrical key oscillator (for front passenger side) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      		 No pulse generation
      D88-6 (CG2B) - D88-15 (E) V - W-B Door electrical key oscillator (for front passenger side) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • All doors locked by wireless lock function
      		 Pulse generation
      D88-7 (CLG5) - D88-15 (E) R - W-B Indoor electrical key oscillator (for front floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D88-7 (CLG5) - D88-15 (E) R - W-B Indoor electrical key oscillator (for front floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D88-8 (CG5B) - D88-15 (E) W - W-B Indoor electrical key oscillator (for front floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D88-8 (CG5B) - D88-15 (E) W - W-B Indoor electrical key oscillator (for front floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D88-16 (IG) - Body ground B - Body ground IG power supply Engine switch off Below 1 V
      D88-16 (IG) - Body ground B - Body ground IG power supply Engine switch on (IG) 11 to 14 V
      D88-18 (TSW1) - D88-15 (E) B - W-B Lock sensor (for driver side) detection signal
      • Engine switch off
      • All doors closed
      • Lock sensor (for driver side) not touched
      		 Pulse generation
      D88-18 (TSW1) - D88-15 (E) B - W-B Lock sensor (for driver side) detection signal
      • Engine switch off
      • All doors closed
      • Lock sensor (for driver side) touched
      		 Below 2 V
      D88-19 (TSW2) - D88-15 (E) Y - W-B Lock sensor (for front passenger side) detection signal
      • Engine switch off
      • All doors closed
      • Lock sensor (for front passenger side) not touched
      		 Pulse generation
      D88-19 (TSW2) - D88-15 (E) Y - W-B Lock sensor (for front passenger side) detection signal
      • Engine switch off
      • All doors closed
      • Lock sensor (for front passenger side) touched
      		 Below 2 V
      D88-20 (SEN1) - D88-15 (E) GR - W-B Touch sensor (for driver side) detection signal
      • Engine switch off
      • All doors closed
      • Key not in detection area
      • Touch sensor (for driver side) not touched
      		 Pulse generation
      D88-20 (SEN1) - D88-15 (E) GR - W-B Touch sensor (for driver side) detection signal
      • Engine switch off
      • All doors closed
      • Key not in detection area
      • Touch sensor (for driver side) touched
      		 Below 2 V
      D88-21 (SEN2) - D88-15 (E) BR - W-B Touch sensor (for front passenger side) detection signal
      • Engine switch off
      • All doors closed
      • Key not in detection area
      • Touch sensor (for front passenger side) not touched
      		 Pulse generation
      D88-21 (SEN2) - D88-15 (E) BR - W-B Touch sensor (for front passenger side) detection signal
      • Engine switch off
      • All doors closed
      • Key not in detection area
      • Touch sensor (for front passenger side) touched
      		 Below 2 V
      D88-22 (TSW5) - D88-15 (E) L - W-B Back door opener switch assembly (opener switch) signal Back door opener switch assembly (opener switch) not pushed Pulse generation
      D88-22 (TSW5) - D88-15 (E) L - W-B Back door opener switch assembly (opener switch) signal Back door opener switch assembly (opener switch) pushed Below 1 V
      D88-23 (TSW6) - D88-15 (E) Y - W-B Back door opener switch assembly (lock switch) signal Back door opener switch assembly (lock switch) not pushed Pulse generation
      D88-23 (TSW6) - D88-15 (E) Y - W-B Back door opener switch assembly (lock switch) signal Back door opener switch assembly (lock switch) pushed Below 1 V
      D88-24 (CLG6) - D88-15 (E) V - W-B Indoor electrical key oscillator (for center floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D88-24 (CLG6) - D88-15 (E) V - W-B Indoor electrical key oscillator (for center floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D88-25 (CG6B) - D88-15 (E) P - W-B Indoor electrical key oscillator (for center floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D88-25 (CG6B) - D88-15 (E) P - W-B Indoor electrical key oscillator (for center floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D88-26 (CLG7) - D88-15 (E) L - W-B Indoor electrical key oscillator (for rear floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D88-26 (CLG7) - D88-15 (E) L - W-B Indoor electrical key oscillator (for rear floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D88-27 (CG7B) - D88-15 (E) LG - W-B Indoor electrical key oscillator (for rear floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) not touched
      		 No pulse generation
      D88-27 (CG7B) - D88-15 (E) LG - W-B Indoor electrical key oscillator (for rear floor) sensor signal
      • Engine switch off
      • All doors closed
      • Key not in cabin
      • Door outside handle assembly (lock sensor) touched
      		 Pulse generation
      D88-32 (POS1) - D88-15 (E) Y - W-B Lock or unlock sensor (for driver side) output signal Engine switch off 9 to 14 V
      D88-32 (POS1) - D88-15 (E) Y - W-B Lock or unlock sensor (for driver side) output signal Engine switch on (IG) Below 2 V
      D88-33 (POS2) - D88-15 (E) LG - W-B Lock or unlock sensor (for front passenger side) output signal Engine switch off 9 to 14 V
      D88-33 (POS2) - D88-15 (E) LG - W-B Lock or unlock sensor (for front passenger side) output signal Engine switch on (IG) Below 2 V
      D87-5 (RCO) - D88-15 (E) V - W-B Door control receiver power source
      • Engine switch off
      • Lock or unlock switch on key not pushed
      		 Below 1 V
      D87-5 (RCO) - D88-15 (E) V - W-B Door control receiver power source
      • Engine switch off
      • Lock or unlock switch on key pushed
      		 4.5 to 5.5 V
      D87-15 (RDA) - D88-15 (E) Y - W-B Door control receiver data input signal Engine switch off, all doors closed and transmitter switch not pressed 11 to 14 V pulse generation at regular intervals
      Engine switch off, all doors closed and transmitter switch pressed Pulse generation
      D87-16 (RSSI) - D88-15 (E) R - W-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
      D87-16 (RSSI) - D88-15 (E) R - W-B Door control receiver electric wave existence signal
      • Engine switch off
      • All doors locked
      • Lock or unlock switch on key pushed
      		 Below 2 V
      D87-19 (CLG8) - D88-15 (E) P - W-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
      D87-19 (CLG8) - D88-15 (E) P - W-B Outside electrical key oscillator (for rear side) sensor signal
      • Engine switch off
      • All doors closed
      • Back door opener switch assembly on
      		 Pulse generation
      D87-20 (CG8B) - D88-15 (E) V - W-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
      D87-20 (CG8B) - D88-15 (E) V - W-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 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU 
    1. Turn the ignition switch off.
      Fig 2: Instrument Panel Junction Block Assembly Connector Terminal Identification
      GTY302411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Instrument Panel Junction Block Assembly - -
    2. Remove the main body ECU from the instrument panel junction block assembly. Refer to REMOVAL .

      HINT: 

      The instrument panel junction block assembly connectors must all be connected.

    3. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (symbol) Wiring Color Terminal Description Condition Specified Condition
      2I-2 (FLCY) - Body ground - Front door courtesy light switch LH input Front door LH CLOSED (off) → OPEN (on) 10 kΩ or higher → Below 1 Ω
      2I-4 (FRCY) - Body ground - Front door courtesy light switch RH input Front door RH CLOSED (off) → OPEN (on) 10 kΩ or higher → Below 1 Ω
      2I-11 (GND1) - Body ground - Ground Always Below 1 Ω
      2I-29 (ACC) - Body ground - Ignition power supply (ACC signal) Ignition switch ACC → off 11 to 14 V → Below 1 V
      2I-30 (BECU) - Body ground - +B (power system signal system) power supply Always 11 to 14 V
      2I-31 (ALTB) - Body ground - +B (power system alternator system) power supply Always 11 to 14 V
      2I-32 (IG) - Body ground - Ignition power supply (IG signal) Ignition switch ON → off 11 to 14 V → Below 1 V
      D12-3 (LCTY) - Body ground GR - Body ground Rear door courtesy light LH switch input Rear door CLOSED (off) → OPEN (on) 10 kΩ or higher → Below 1 Ω
      D13-6 (RCTY) - Body ground L - Body ground Rear door courtesy light RH switch input Rear door CLOSED (off) → OPEN (on) 10 kΩ or higher → Below 1 Ω
      D13-19 (BCTY) - Body ground GR - Body ground Back door courtesy light switch input Back door CLOSED (off) → OPEN (on) 10 kΩ or higher → Below 1 Ω

      If the result is not as specified, there may be a malfunction in the wire harness or the instrument panel junction block assembly.

    4. Reinstall the main body ECU. Refer to REMOVAL .
      Fig 3: Main Body ECU Connector Terminal Identification
      GTY307325Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Main Body ECU - -
    5. Reconnect the D12 and D13 main body ECU connectors.
    6. Measure the resistance and voltage according to the value(s) in the table below.
      Terminal No. (symbol) Wiring Color Terminal Description Condition Specified Condition
      D12-3 (LCTY) - Body ground GR - Body ground Rear door courtesy light LH switch input Rear door CLOSED (off) → OPEN (on) 10 kΩ or higher → Below 1Ω
      D13-6 (RCTY) - Body ground L - Body ground Rear door courtesy light RH switch input Rear door CLOSED (off) → OPEN (on) 10 kΩ or higher → Below 1Ω
      D13-19 (BCTY) - Body ground GR - Body ground Back door courtesy light switch input Back door CLOSED (off) → OPEN (on) 10 kΩ or higher → Below 1Ω

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

      HINT: 

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

    7. Reconnect the main body ECU connectors.
    8. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2D-1 (ACT-) - Body ground R - Body ground Door lock motor unlock drive output (except driver side) Multiplex network master switch (door control switch) or driver side door key cylinder off Below 1 V
      2D-1 (ACT-) - Body ground R - Body ground Door lock motor unlock drive output (except driver side) Multiplex network master switch (door control switch) or driver side door key cylinder unlocked 11 to 14 V
      2D-3 (ACT+) - Body ground P - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch (door control switch) or driver side door key cylinder off Below 1 V
      2D-3 (ACT+) - Body ground P - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch (door control switch) or driver side door key cylinder locked 11 to 14 V
      2D-7 (ACTD) - Body ground R - Body ground Driver side door lock motor unlock drive output Multiplex network master switch (door control switch) or driver side door key cylinder off Below 1 V
      2D-7 (ACTD) - Body ground R - Body ground Driver side door lock motor unlock drive output Multiplex network master switch (door control switch) or driver side door key cylinder unlocked 11 to 14 V
      2H-27 (FRCY) - Body ground GR - Body ground Front passenger side door courtesy switch input Front passenger side door open Below 1 V
      2H-27 (FRCY) - Body ground GY - Body ground Front passenger side door courtesy switch input Front passenger side door closed 11 to 14 V
      2H-35 (FLCY) - Body ground P - Body ground Driver door courtesy switch input Driver door open Below 1 V
      2H-35 (FLCY) - Body ground P - Body ground Driver side door courtesy switch input Driver door closed 11 to 14 V
      2H-26 (LSWL) - Body ground B - Body ground Rear door LH lock position switch input Rear door LH unlocked Below 1 V
      2H-26 (LSWL) - Body ground B - Body ground Rear door LH lock position switch input Ignition switch off, all doors closed and rear door LH locked Pulse generation
      D12-3 (LCTY) - Body ground GR - Body ground Rear door LH courtesy light switch input Rear door LH open Below 1 V
      D12-3 (LCTY) - Body ground GR - Body ground Rear door LH courtesy light switch input Rear door LH closed 11 to 14 V
      D13-6 (RCTY) - Body ground L - Body ground Rear door RH courtesy light switch input Rear door RH open Below 1 V
      D13-6 (RCTY) - Body ground L - Body ground Rear door RH courtesy light switch input Rear door RH closed 11 to 14 V
      D13-7 (LSFL) - Body ground V - Body ground Driver door lock position switch input Driver door unlocked Below 1 V
      D13-7 (LSFL) - Body ground V - Body ground Driver door lock position switch input Ignition switch off, all doors closed and driver door locked Pulse generation
      D13-9 (L1) - Body ground B - Body ground Front passenger side door control switch input Front passenger side door control switch locked Below 1 V
      D13-9 (L1) - Body ground B - Body ground Front passenger side door control switch input Front passenger side door control switch off Pulse generation
      D13-10 (UL1) - Body ground G - Body ground Front passenger side door control switch input Front passenger side door control switch unlocked Below 1 V
      D13-10 (UL1) - Body ground G - Body ground Front passenger side door control switch input Front passenger side door control switch off Pulse generation
      D13-11 (L2) - Body ground LG - Body ground Driver side door key-linked lock input Driver side door key cylinder turned to locked Below 1 V
      D13-11 (L2) - Body ground LG - Body ground Driver side door key-linked lock input Driver side door key cylinder off 11 to 14 V
      D13-18 (LSFR) - Body ground Y - Body ground Front passenger side door lock position switch input Front passenger side door unlocked Below 1 V
      D13-18 (LSFR) - Body ground Y - Body ground Front passenger side door lock position switch input Ignition switch off, all doors closed and front passenger side door locked Pulse generation
      D13-19 (BCTY) - Body ground GR - Body ground Back door courtesy light switch input Back door open Below 1 V
      D13-19 (BCTY) - Body ground GR - Body ground Back door courtesy light switch input Back door closed 11 to 14 V
      D13-24 (UL3) - Body ground L - Body ground Driver side door key-linked unlock input Driver side door key cylinder turned to unlocked Below 1 V
      D13-24 (UL3) - Body ground L - Body ground Driver side door key-linked unlock input Driver side door key cylinder off 11 to 14 V
      D14-2 (LSWR) - Body ground L - Body ground Rear door RH lock position switch input Rear door RH unlocked Below 1 V
      D14-2 (LSWR) - Body ground L - Body ground Rear door RH lock position switch input Ignition switch off, all doors closed and rear door RH locked 11 to 14 V

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

  3. ACCESSORY METER ASSEMBLY 
    1. Measure the voltage and resistance according to the value(s) in the table below.
      Fig 4: Accessory Meter Assembly Connector Terminal Identification
      GTY297486Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D50-1 (IG) - Body ground GR - Body ground Ignition switch signal Engine switch off Below 1 V
      D50-1 (IG) - Body ground GR - Body ground Ignition switch signal Engine switch on (IG) 11 to 14 V
      D50-9 (+B) - Body ground L - Body ground Battery Always 11 to 14 V
      D50-16 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω

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

  4. CHECK SLIDE DOOR MOTOR UNIT LH (POWER SLIDE DOOR ECU LH) 
    1. Disconnect the J9 connector from the power slide door ECU LH.
      Fig 5: Slide Door Motor Unit LH (Power Slide Door ECU LH) Connector Terminal Identification
      GTY298738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J9-12 (ECUB) - J9-1 (GND) SB - W-B Power supply Always 11 to 14 V
      J9-7 (B) - J9-1 (GND) LG - W-B Power supply Always 11 to 14 V
      J9-4 (IG) - J9-1 (GND) B - W-B Power supply Engine switch on (IG) 11 to 14 V
      J9-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      J9-9 (OSW) - J9-2 (OSG) G - V Power slide door switch LH input Slide door outside handle LH pulled Below 1 Ω
      Slide door outside handle LH not operated 10 kΩ or higher
      J9-11 (MPX1) - Body ground R - Body ground CAN Always 10 kΩ or higher
      J9-5 (MPX2) - Body ground W - Body ground CAN Always 10 kΩ or higher
  5. CHECK SLIDE DOOR MOTOR UNIT RH (POWER SLIDE DOOR ECU RH) 
    1. Disconnect the I8 connector from the power slide door ECU RH.
      Fig 6: Slide Door Motor Unit RH (Power Slide Door ECU RH) Connector Terminal Identification
      GTY298639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I8-7 (ECUB) - I8-6 (GND) SB - W-B Power supply Always 11 to 14 V
      I8-12 (B) - I8-6 (GND) LG - W-B Power supply Always 11 to 14 V
      I8-3 (IG) - I8-6 (GND) B - W-B Power supply Engine switch on (IG) 11 to 14 V
      I8-6 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I8-10 (OSW) - I8-5 (OSG) G - V Power slide door switch RH input Slide door outside handle RH pulled Below 1 Ω
      Slide door outside handle RH not operated 10 kΩ or higher
      I8-8 (MPX1) - Body ground R - Body ground CAN Always 10 kΩ or higher
      I8-2 (MPX2) - Body ground W - Body ground CAN Always 10 kΩ or higher
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