LIGHTING SYSTEM TERMINALS OF ECU


  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B006IU3N24

    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
      3F-1 - Body ground W - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      3K-1 - Body ground B-R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      3D-3 - Body ground W-B - Body ground Ground Always Below 1 Ω

    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
      3A-17 - Body ground L - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      3A-30 - Body ground R - Body ground ACC power supply Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      3A-31 - Body ground GR - Body ground Rear door courtesy light switch assembly RH input Rear door RH open Below 1 V
      Rear door RH closed 11 to 14 V
      3A-36 - Body ground* G - Body ground Footwell light LH drive output Footwell light LH off 11 to 14 V
      Footwell light LH at full brightness Below 2.2 V
      3A-37 - Body ground* W - Body ground Footwell light RH drive output Footwell light RH off 11 to 14 V
      Footwell light RH at full brightness Below 2.2 V
      3D-9 - Body ground R - Body ground Map light assembly, No. 1 room light assembly and vanity light assembly LH and RH power supply DOME CUT relay on 11 to 14 V
      DOME CUT relay off Below 1 V
      3D-12 - Body ground V - Body ground Front door unlock detection switch RH input Front door RH locked Pulse generation
      Front door RH unlocked Below 1 V
      3D-13 - Body ground GR - Body ground Front door unlock detection switch LH input Front door LH locked Pulse generation
      Front door LH unlocked Below 1 V
      3D-14 - Body ground LG - Body ground Rear door unlock detection switch input Rear door locked Pulse generation
      Rear door unlocked Below 1 V
      3D-24 - Body ground P - Body ground Footwell light LH power supply Power switch off 11 to 14 V
      3D-25 - Body ground GR - Body ground Footwell light RH power supply Power switch off 11 to 14 V
      3D-29 - Body ground V - Body ground Illuminated entry system drive output Map light LH and map light RH (map light assembly) off (when operated by illuminated entry system) 11 to 14 V
      Map light LH and map light RH (map light assembly) on (when operated by illuminated entry system) Below 1 V
      3H-19 - Body ground R - 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
      3H-24 - Body ground BR - Body ground Rear door courtesy light switch assembly LH input Rear door LH open Below 1 V
      Rear door LH closed 11 to 14 V
      3H-34 - Body ground SB - Body ground Back door courtesy light switch input Back door open (when No. 1 luggage compartment light switch on) Below 1 V
      Back door closed (when No. 1 luggage compartment light switch on) 11 to 14 V
      I18-6 (FLCY) - Body ground BR - Body ground Front door courtesy light switch assembly LH input Front door LH open Below 1 V
      Front door LH closed 11 to 14 V
      I18-25 (BCYL) - Body ground B - Body ground No. 1 luggage compartment light assembly drive output Back door open (when No. 1 luggage compartment light switch on) Below 1 V
      Back door closed (when No. 1 luggage compartment light switch on) 11 to 14 V
      I18-27 (FRCY) - Body ground L - Body ground Front door courtesy light switch assembly RH input Front door RH open Below 1 V
      Front door RH closed 11 to 14 V

      • *: w/ Footwell Light

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A003NAXN42

    1. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I1-10 (SWIL) - I1-11 (AGND) P - W Power switch illumination drive output Power switch illumination on 11 to 14 V
      Power switch illumination off Below 1 V