LIGHTING SYSTEM TERMINALS OF ECU


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

    A00Y6QDC09
    *A Main Body ECU (Multiplex Network Body ECU) with 1 Connector - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 1 Connector - -
    A00Y8J8C08
    *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 2 Connectors - -

    1. Disconnect the 3A, 3B and 3C instrument panel junction block assembly 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
      3A-43 - Body ground G - Body ground Battery power supply Always 11 to 14 V
      3B-1 - Body ground W - Body ground Battery power supply Always 11 to 14 V
      3C-9 - 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 3A, 3B and 3C instrument panel junction block assembly 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
      3D-25 - Body ground B - Body ground ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      3D-24 - Body ground G - Body ground IG power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      3C-51 - Body ground L - Body ground IG signal input Ignition switch ON

      11 to 14 V*1

      9.5 to 14 V*2
      Ignition switch off Below 1 V
      3C-17 - Body ground*1 L - Body ground IG signal output Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      E22-15 (DOMR)- Body ground L - Body ground DOME CUT relay drive output DOME CUT relay off 11 to 14 V
      DOME CUT relay on Below 1 V
      3C-21 - Body ground P - Body ground Interior lights power supply DOME CUT relay off Below 1 V
      DOME CUT relay on 11 to 14 V
      3C-42 - Body ground R - Body ground Interior lights power supply DOME CUT relay off Below 1 V
      DOME CUT relay on 11 to 14 V
      3C-54 - Body ground W - Body ground Interior lights drive output Personal light off (when operated by illuminated entry system) 11 to 14 V
      Personal light on (when operated by illuminated entry system) Below 1 V
      3E-38 - Body ground P - Body ground No. 1 Luggage compartment light assembly power supply DOME CUT relay off Below 1 V
      DOME CUT relay on 11 to 14 V
      3E-34 - Body ground LG - Body ground Back door courtesy light switch input Back door open Below 1 V
      Back door closed Pulse generation
      3E-25 - Body ground W - Body ground Front door courtesy light switch assembly (LH) input Front door LH open Below 1 V
      Front door LH closed Pulse generation
      E22-19 (FRCY) - Body ground V - Body ground Front door courtesy light switch assembly (RH) input Front door RH open Below 1 V
      Front door RH closed Pulse generation
      E22-24 (LCTY) - Body ground SB - Body ground Rear door courtesy light switch assembly (LH) input Rear door LH open Below 1 V
      Rear door LH closed Pulse generation
      E22-6 (RCTY) - Body ground LG - Body ground Rear door courtesy light switch assembly (RH) input Rear door RH open Below 1 V
      Rear door RH closed Pulse generation
      E22-7 (LSFL) - Body ground Y - Body ground Front door unlock detection switch LH input Front door LH locked Pulse generation
      Front door LH unlocked Below 1 V
      E22-18 (LSFR) - Body ground LG - Body ground Front door unlock detection switch RH input Front door RH locked Pulse generation
      Front door RH unlocked Below 1 V
      3E-37 - Body ground Y - Body ground Rear door unlock detection switch LH input Rear door LH and rear door RH locked Pulse generation
      Rear door LH or rear door RH unlocked Below 1 V
      3E-22 - Body ground Y - Body ground Rear door unlock detection switch RH input Rear door LH and rear door RH locked Pulse generation
      Rear door LH or rear door RH unlocked Below 1 V

      • *1: w/o Stop and Start System

      • *2: w/ Stop and Start System

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

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

    A00Y5B2E68

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E35-16 (SWIL) - E35-24 (AGND) G - BR 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.