LIGHTING SYSTEM TERMINALS OF ECU


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

    A01VAOXN02
    A01V8PBC09
    *A Main Body ECU (Multiplex Network Body ECU) with 1 connector *B Main Body ECU (Multiplex Network Body ECU) with 3 connectors
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      for LHD:

      Click here

      for RHD:

      Click here

    2. Connect the instrument panel junction block assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-32 (IG) - Body ground - Ignition power supply Ignition switch ON

      11 to 14 V*1

      10.5 to 14 V*2
      Ignition switch off Below 1 V
      A-30 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-29 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω

      *1: w/o Stop and Start System

      *2: w/ Stop and Start System

      If the result is not as specified, there may be a malfunction in the wire harness or instrument panel junction block assembly.

    4. Install the main body ECU (multiplex network body ECU).

      for LHD:

      Click here

      for RHD:

      Click here

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G78-6 (RCTY) - Body ground Y - Body ground Rear door courtesy light switch RH signal Rear door RH open Below 1 V
      Rear door RH closed Pulse generation
      G78-7 (LSFL) - Body ground B - Body ground Front door unlock detection switch LH signal Front door LH unlocked Below 1 V
      Ignition switch off, all doors closed and front door LH locked Pulse generation
      G78-15 (DOMR) - Body ground R - Body ground Battery saving control (interior light auto cut function) signal Battery saving control (interior light auto cut function) operating 11 to 14 V
      Battery saving control (interior light auto cut function) not operating Below 1 V
      G78-18 (LSFR) - Body ground P - Body ground Front door unlock detection switch RH signal Front door RH unlocked Below 1 V
      Ignition switch off, all doors closed and front door RH locked Pulse generation
      G78-19 (FRCY) - Body ground L - Body ground Front door courtesy light switch RH signal Front door RH open Below 1 V
      Front door RH closed Pulse generation
      G78-1 (LCTY) - Body ground*3 W - Body ground Rear door courtesy light switch LH signal Rear door LH open Below 1 V
      Rear door LH closed Pulse generation
      G78-24 (LCTY) - Body ground*4

      W - Body ground*1

      SB - Body ground*2

      		 Rear door courtesy light switch LH signal Rear door LH open Below 1 V
      Rear door LH closed Pulse generation
      G202-6 (FSPT) - Body ground*7 L - Body ground Footwell light output Footwell light off 11 to 14 V
      Footwell light on Below 1 V
      3C-36 - Body ground B - Body ground Instrument panel illumination signal Headlight dimmer switch in TAIL 11 to 14 V
      Headlight dimmer switch off Below 1 V
      3C-41 (LSR) - Body ground*5 Y - Body ground Rear door unlock detection switch RH signal Rear door RH unlocked Below 1 V
      Ignition switch off, all doors closed and rear door RH locked Pulse generation
      3D-35 (ILE) - Body ground GR - Body ground Map light and No. 1 room light signal Map light and No. 1 room light on using illuminated entry system Below 1 V
      Map light and No. 1 room light off using illuminated entry system 11 to 14 V
      3D-44 (KILE) - Body ground*6 GR - Body ground Ignition key cylinder light signal Ignition key cylinder light on Below 1 V
      Ignition key cylinder light off 11 to 14 V
      3D-50 (BCYL) - Body ground*6 Y - Body ground Interior light power supply Battery saving control (interior light auto cut function) operating Below 1 V
      Battery saving control (interior light auto cut function) not operating 11 to 14 V
      3E-25 (BCTL) - Body ground P - Body ground Interior light power supply Battery saving control (interior light auto cut function) operating Below 1 V
      Battery saving control (interior light auto cut function) not operating 11 to 14 V
      3E-32 (LSR) - Body ground*5 Y - Body ground Rear door unlock detection switch LH signal Rear door LH unlocked Below 1 V
      Ignition switch off, all doors closed and rear door LH locked Pulse generation
      3E-33 (BCTY) - Body ground GR - Body ground Back door courtesy light switch signal Back door open Below 1 V
      Back door closed 11 to 14 V
      3E-40 (FLCY) - Body ground W - Body ground Front door courtesy light switch LH signal Front door LH open Below 1 V
      Front door LH closed Pulse generation

      *1: for LHD

      *2: for RHD

      *3: w/ Side Marker Light

      *4: w/o Side Marker Light

      *5: w/ Entry and Start System or Theft Deterrent System

      *6: w/o Entry and Start System

      *7: w/ Footwell Light

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

    A01V9D6N72

    1. Disconnect the G82 and G84 certification 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
      G82-2 (+B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      G82-10 (CUTB) - Body ground P - Body ground Battery power supply Always 11 to 14 V
      G84-5 (IG) - Body ground LG - Body ground Ignition power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      G82-11 (E) - Body ground BR - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the G82 and G84 certification ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G84-16 (SWIL) - Body ground P - Body ground Engine switch illumination operation signal Engine switch illumination on 11 to 14 V
      Engine switch illumination off Below 1 V