LIGHTING SYSTEM TERMINALS OF ECU


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

    A004JK5E03
    Text in Illustration
    *1 Instrument Panel Junction Block Assembly *2 Main Body ECU (Network Gateway ECU)

    1. Disconnect the D5 main body ECU (network gateway ECU) connectors.

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

      Terminal No. Wiring Color Terminal Description Condition Specified Condition
      D5-22 (ACC) - Body ground*1 W - Body ground ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V

      • *1: w/ Entry and Start System

    3. Disconnect the 3A, 3C, 3E, A73 and D6 instrument panel junction block assembly and main body ECU (network gateway ECU) connectors.

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

      Terminal No. Wiring Color Terminal Description Condition Specified Condition
      3A-15 - Body ground W - Body ground IG power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      3A-20 - Body ground SB - Body ground ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      3A-27 - Body ground G-R - Body ground Battery power supply Always 11 to 14 V
      3C-19 - Body ground L-R - Body ground Battery power supply Always 11 to 14 V
      3E-1 - Body ground B-R - Body ground Battery power supply Always 11 to 14 V

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

    5. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      3A-12 - Body ground B - Body ground Ground Always Below 1 Ω
      3A-13 - Body ground B - Body ground Ground Always Below 1 Ω
      A73-4 (GND) - Body ground B-Y - Body ground Ground Always Below 1 Ω
      D6-1 (GND) - Body ground B - Body ground Ground Always Below 1 Ω

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

    6. Reconnect the 3A, 3C, 3E, A73 and D6 instrument panel junction block assembly and main body ECU (network gateway ECU) connectors.

    7. 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-28 - Body ground V - Body ground

      Front door courtesy light switch LH input*3

      Front door courtesy light switch RH input*4

      Front door LH open*3

      Front door RH open*4

      		 Below 1 V

      Front door LH closed*3

      Front door RH closed*4

      		 11 to 14 V
      3B-13 - Body ground GR - Body ground

      Front door courtesy light switch RH input*3

      Front door courtesy light switch LH input*4

      Front door RH open*3

      Front door LH open*4

      		 Below 1 V

      Front door RH closed*3

      Front door LH closed*4

      		 11 to 14 V
      3D-26 - Body ground SB - Body ground Luggage compartment door courtesy light switch input Luggage compartment door open Below 1 V
      Luggage compartment door closed 11 to 14 V

      D5-5 (FLCL) - Body ground*3

      D5-5 (FRCL) - Body ground*4

      		 SB - Body ground

      Front door courtesy light LH drive output*3

      Front door courtesy light RH drive output*4

      Ignition switch off, front door courtesy light LH off*3

      Ignition switch off, front door courtesy light RH off*4

      		 11 to 14 V

      Ignition switch off, front door courtesy light LH on*3

      Ignition switch off, front door courtesy light RH on*4

      		 Below 1 V

      D5-6 (FRCL) - Body ground*3

      D5-6 (FLCL) - Body ground*4

      		 B - Body ground

      Front door courtesy light RH drive output*3

      Front door courtesy light LH drive output*4

      Ignition switch off, front door courtesy light RH off*3

      Ignition switch off, front door courtesy light LH off*4

      		 11 to 14 V

      Ignition switch off, front door courtesy light RH on*3

      Ignition switch off, front door courtesy light LH on*4

      		 Below 1 V
      D5-7 (DOMR) - Body ground L - Body ground Illuminated entry drive output (to map light assembly) Map light switch in DOOR position and map light assembly on Below 1 V
      Map light switch in DOOR position and map light assembly off 11 to 14 V
      D5-28 (ILL) - Body ground*2 Y - Body ground Ignition key cylinder light drive output Ignition switch off, ignition key cylinder light off (when operated by illuminated entry system) 11 to 14 V
      Ignition switch off, ignition key cylinder light on (when operated by illuminated entry system) Below 1 V
      D6-11 (LSFD) - Body ground*1 W - Body ground

      Front door unlock detection switch LH input*3

      Front door unlock detection switch RH input*4

      Ignition switch off, all doors closed and front door LH locked*3

      Ignition switch off, all doors closed and front door RH locked*4

      		 Pulse generation

      Front door LH unlocked*3

      Front door RH unlocked*4

      		 Below 1 V
      D6-12 (LSFP) - Body ground*1 SB - Body ground

      Front door unlock detection switch RH input*3

      Front door unlock detection switch LH input*4

      Ignition switch off, all doors closed and front door RH locked*3

      Ignition switch off, all doors closed and front door LH locked*4

      		 Pulse generation

      Front door RH unlocked*3

      Front door LH unlocked*4

      		 Below 1 V

      • *1: w/ Entry and Start System

      • *2: w/o Entry and Start System

      • *3: for LHD

      • *4: for RHD

      If the result is not as specified, the main body ECU (network gateway ECU) or instrument panel junction block assembly may have a malfunction.

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A004IXCE02

    1. Disconnect the D41 and D48 certification ECU (smart key ECU assembly) connectors.


      • If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D41-5 (IG2) - Body ground Y - Body ground IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      D48-2 (+B) - D48-11 (GND) R - B +B power supply Always 9.5 to 16 V

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

    3. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D48-11 (GND) - Body ground 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 D41 and D48 certification ECU (smart key ECU assembly) connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D41-16 (SWIL) - D41-24 (AGND) LG - B 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 have a malfunction.