LIGHTING SYSTEM TERMINALS OF ECU


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

    A002YRWC36
    *A Main Body ECU (Multiplex Network Body ECU) with 1 Connector - -
    A002YIVC31
    *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -

    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 Battery power supply Always 11 to 14 V
      3K-1 - Body ground B-R - Body ground Battery power supply Always 11 to 14 V
      3D-3 - 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 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-30 - Body ground

      LG - Body ground*1

      G - Body ground*2

      		 ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      3A-17 - Body ground GR - Body ground IG power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      3D-24*3 - Body ground L - Body ground Door ambient illumination light RH power supply Always 11 to 14 V
      3D-25*3 - Body ground G - Body ground Door ambient illumination light LH power supply Always 11 to 14 V
      3D-26*3 - Body ground P - Body ground No. 1 cup holder illumination light power supply Always 11 to 14 V
      3D-27*3 - Body ground R - Body ground No. 2 cup holder illumination light power supply Always 11 to 14 V
      3H-19 - Body ground L - Body ground No. 1 luggage compartment light power supply DOME CUT relay on 11 to 14 V
      DOME CUT relay off Below 1 V
      3D-9 - Body ground W - Body ground Map light assembly, No. 1 room light and vanity lights power supply DOME CUT relay on 11 to 14 V
      DOME CUT relay off Below 1 V
      3D-29 - Body ground G - Body ground Interior lights drive output Interior lights off (when operated by illuminated entry system) 11 to 14 V
      Interior lights on (when operated by illuminated entry system) Below 1 V
      3H-24 - Body ground BR - Body ground Rear door courtesy light switch LH input Rear door LH open Below 1 V
      Rear door LH closed Pulse generation
      3A-31 - Body ground BR - Body ground Rear door courtesy light switch RH input Rear door RH open Below 1 V
      Rear door RH closed Pulse generation
      F15-6 (FLCY) - Body ground R - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V
      Front door LH closed Pulse generation
      F15-27 (FRCY) - Body ground BR - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V
      Front door RH closed Pulse generation
      3D-14*1, *4 - Body ground LG - Body ground Rear door unlock detection switch input Rear door locked Pulse generation
      Rear door unlocked Below 1 V
      3D-13 - Body ground B - Body ground Front door unlock detection switch LH input Front door LH locked Pulse generation
      Front door LH unlocked Below 1 V
      3D-12 - Body ground GR - Body ground Front door unlock detection switch RH input Front door RH locked Pulse generation
      Front door RH unlocked Below 1 V
      F15-25 (BCYL) - Body ground Y - Body ground No. 1 luggage compartment light drive output No. 1 luggage compartment light off 11 to 14 V
      No. 1 luggage compartment light on Below 1 V
      3H-34 - Body ground SB - Body ground Back door courtesy light switch input Back door open Below 1 V
      Back door closed 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 be malfunctioning.

      *1: w/ Entry and Start System

      *2: w/o Entry and Start System

      *3: w/ Door Ambient Illumination Light

      *4: w/ Double Locking System

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Entry and Start System)

    B008L1DN41

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F1-10 (SWIL) - F1-11 (AGND) LG - P Engine switch illumination drive output Engine switch illumination on 11 to 14 V
      Engine switch illumination off Below 1 V

      • If the result is not as specified, the certification ECU (smart key ECU assembly) may be malfunctioning.