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Terminals Of Ecu [04/2018 - ]

  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    GTY874471Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.
    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
      4D-3 - Body ground LA - Body ground Ground Always Below 1 Ω
      4F-1 - Body ground LG - Body ground Battery power supply Always 11 to 14 V
      4K-1 - Body ground B - Body ground*1
      W - Body ground*2      		 Battery power supply Always 11 to 14 V
      G32-19 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      1. *1: w/ Power Tilt and Power Telescopic
      2. *2: w/o Power Tilt and Power Telescopic
    3. Connect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.
    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
      4A-17 - Body ground R - Body ground IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      4A-30 - Body ground LG - Body ground ACC power supply Engine switch on (ACC) 11 to 14 V
      Engine switch off Below 1 V
      4A-31 - Body ground V - Body ground Rear door courtesy light switch assembly (for RH) input Rear door RH open Below 1 V
      Rear door RH closed 11 to 14 V
      4A-36 - Body ground* SB - Body ground Front door inside handle illumination light assembly LH and RH, center console light (for passenger side) (No. 2 interior illumination light sub-assembly), center console light (for driver side (No. 3 interior illumination light sub-assembly) and cup holder light (for front side and rear side) (No. 4 interior illumination light sub-assembly) drive output Front door inside handle illumination light assembly LH and RH, center console light (for passenger side) (No. 2 interior illumination light sub-assembly), center console light (for driver side (No. 3 interior illumination light sub-assembly) and cup holder light (for front side and rear side) (No. 4 interior illumination light sub-assembly) off 11 to 14 V
      Front door inside handle illumination light assembly LH and RH, center console light (for passenger side) (No. 2 interior illumination light sub-assembly), center console light (for driver side (No. 3 interior illumination light sub-assembly) and cup holder light (for front side and rear side) (No. 4 interior illumination light sub-assembly) dimmer control operating (dimming) Pulse generation
      Front door inside handle illumination light assembly LH and RH, center console light (for passenger side) (No. 2 interior illumination light sub-assembly), center console light (for driver side (No. 3 interior illumination light sub-assembly) and cup holder light (for front side and rear side) (No. 4 interior illumination light sub-assembly) at full brightness Below 2.2 V
      4D-10 - Body ground R - Body ground Roof console box sub-assembly, spot light assembly, vanity light (visor assembly LH), vanity light (visor assembly RH), front footwell light LH and RH (No. 1 interior illumination light assembly), rear footwell light LH and RH (No. 6 interior illumination light sub-assembly) and front console light (interior illumination light sub-assembly) power supply DOME CUT relay on 11 to 14 V
      DOME CUT relay off Below 1 V
      4D-12 - Body ground GR - Body ground Front door unlock detection switch RH input Front door RH locked 11 to 14 V
      Front door RH unlocked Below 1 V
      4D-13 - Body ground W - Body ground Front door unlock detection switch LH input Front door LH locked 11 to 14 V
      Front door LH unlocked Below 1 V
      4D-14 - Body ground GR - Body ground Rear door unlock detection switch LH input Rear door LH locked 11 to 14 V
      Rear door LH unlocked Below 1 V
      4D-24 - Body ground* LG - Body ground Front door inside handle illumination light assembly LH and RH, center console light (for passenger side) (No. 2 interior illumination light sub-assembly), center console light (for driver side) (No. 3 interior illumination light sub-assembly) and cup holder light (for front side and rear side) (No. 4 interior illumination light sub-assembly) power supply Always 11 to 14 V
      4D-29 - Body ground LA-G - Body ground Illuminated entry system drive output Map light LH and map light RH (map light (roof console box sub-assembly)) off (when operated by illuminated entry system) 11 to 14 V
      Map light LH and map light RH (map light (roof console box sub-assembly)) on (when operated by illuminated entry system) Below 1 V
      4H-19 - Body ground LA-B - Body ground No. 1 luggage compartment light assembly and courtesy light assembly LH and RH power supply DOME CUT relay on 11 to 14 V
      DOME CUT relay off Below 1 V
      4H-24 - Body ground G - Body ground Rear door courtesy light switch assembly (for LH) input Rear door LH open Below 1 V
      Rear door LH closed 11 to 14 V
      4H-34 - Body ground LA-GR - Body ground Luggage compartment door courtesy light switch (luggage compartment door lock assembly) input Luggage compartment door open Below 1 V
      Luggage compartment door closed 11 to 14 V
      G32-20 (LSWR) - Body ground L - Body ground Rear door unlock detection switch RH input Rear door RH locked 11 to 14 V
      Rear door RH unlocked Below 1 V
      G33-1 (FLCY) - Body ground W - Body ground Front door courtesy light switch assembly (for LH) input Front door LH open Below 1 V
      Front door LH closed 11 to 14 V
      G33-2 (FLCL) - Body ground G - Body ground Courtesy light assembly LH drive output Courtesy light assembly LH off 11 to 14 V
      Courtesy light assembly LH on Below 1 V
      G33-3 (FRCL) - Body ground L - Body ground Courtesy light assembly RH drive output Courtesy light assembly RH off 11 to 14 V
      Courtesy light assembly RH on Below 1 V
      G33-6 (FRCY) - Body ground BE - Body ground Front door courtesy light switch assembly (for RH) input Front door RH open Below 1 V
      Front door RH closed 11 to 14 V
      G33-14 (ILSW) - Body ground* W - Body ground Mood switch signal input Mood switch off 11 to 14 V
      Mood switch on Below 1 V
      G33-20 (TCYL) - Body ground GR - Body ground No. 1 luggage compartment light assembly drive output No. 1 luggage compartment light assembly off 11 to 14 V
      No. 1 luggage compartment light assembly on Below 1 V
      1. *: w/ Mood Switch
  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    GTY857015Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G40-10 (SWIL) - G40-11 (AGND) W - BE Engine switch illumination drive output Engine switch illumination on 11 to 14 V
      Engine switch illumination off Below 1 V
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