LIGHTING SYSTEM TERMINALS OF ECU


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

    A01MIPCC01
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

    2. Measure the voltage on the wire harness side connector according to the value(s) in the table below.

      Terminal No. Wiring Color Terminal Description Condition Specified Condition
      4E-1 - Body ground B - Body ground Auxiliary battery power supply Always 11 to 14 V
      4F-1 - Body ground L - Body ground Auxiliary battery power supply Always 11 to 14 V

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

    3. Measure the resistance on the wire harness side connector according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      4B-7 - 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.

    4. Reconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

    5. 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
      4B-19 - Body ground GR - Body ground ACC power supply Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      4A-40 - Body ground LG - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      4D-27 - Body ground G - Body ground No. 1 Interior illumination light assembly RH power supply Always 11 to 14 V
      4B-15 - Body ground W - Body ground No. 1 Interior illumination light assembly LH power supply Always 11 to 14 V
      4D-31 - Body ground LG - Body ground Front courtesy light assembly LH power supply DOME CUT relay on 11 to 14 V
      DOME CUT relay off Below 1 V
      4B-18 - Body ground LA-LG - Body ground Vanity lights, courtesy lights, map light assembly and no. 1 room light assembly power supply DOME CUT relay on 11 to 14 V
      DOME CUT relay off Below 1 V
      4B-16 - Body ground L - Body ground No. 1 luggage compartment light assembly power supply DOME CUT relay on 11 to 14 V
      DOME CUT relay off Below 1 V
      4B-10 - Body ground LG - Body ground No. 1 room light assembly drive output No. 1 room light assembly off (when operated by illuminated entry system) 11 to 14 V
      No. 1 room light assembly off (when operated by illuminated entry system) Below 1 V
      G5-4 (MILE) - Body ground SB - Body ground Dome light drive output Dome light on (when operated by illuminated entry system) 11 to 14 V
      Dome light off (when operated by illuminated entry system) Below 1 V
      G5-24 (CSPT) - Body ground L - Body ground Center console illumination light drive output Center console illumination light off 11 to 14 V
      Center console illumination light on Below 1 V
      G5-27 (DMDR) - Body ground W - Body ground Door switch signal input Door switch on Below 1 V
      Door switch off Pulse generation
      G5-28 (DMON) - Body ground B - Body ground Map light switch signal input Map light switch on Below 1 V
      Map light switch off Pulse generation
      G6-25 (TCYL) - Body ground Y - Body ground Luggage compartment room light drive input No. 1 luggage compartment light off 11 to 14 V
      No. 1 luggage compartment light on Below 1 V
      G6-6 (FLCY) - Body ground P - Body ground Front door courtesy light switch LH input Door LH open Below 1 V
      Door LH closed 11 to 14 V
      G6-27 (FRCY) - Body ground L - Body ground Front door courtesy light switch RH input Door RH open Below 1 V
      Door RH closed 11 to 14 V
      4D-16 - Body ground SB - Body ground Luggage compartment door courtesy switch input Luggage compartment door open Below 1 V
      Luggage compartment door closed 11 to 14 V
      4B-26 - Body ground P - Body ground Front door unlock detection switch LH input Front Door LH locked Pulse generation
      Front Door LH unlocked Below 1 V
      4B-27 - 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
      4B-23 - Body ground GR - Body ground Rear door unlock detection switch LH input Rear Door LH locked Pulse generation
      Rear Door LH unlocked Below 1 V
      G5-2 (LSWR) - Body ground Y - Body ground Rear door unlock detection switch RH input Rear Door RH locked Pulse generation
      Rear Door RH unlocked Below 1 V
      G5-17 (FRCL) - Body ground Y - Body ground Front courtesy light RH drive output Front courtesy light RH off 11 to 14 V
      Front courtesy light RH on Below 1 V
      G5-1 (FLCL) - Body ground G - Body ground Front courtesy light LH drive output Front courtesy light LH off 11 to 14 V
      Front courtesy light LH on Below 1 V
      4B-17 - Body ground GR - Body ground Rear courtesy light LH drive output Rear courtesy light LH off 11 to 14 V
      Rear courtesy light LH on Below 1 V
      4D-25 - Body ground V - Body ground Rear courtesy light RH drive output Rear courtesy light RH off 11 to 14 V
      Rear courtesy light RH on Below 1 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.

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A01MGZVE16

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G41-17 (SWIL) - G41-12 (AGND) SB - G Power switch illumination drive output Power switch illumination on 11 to 14 V
      Power switch illumination off Below 1 V

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