LIGHTING SYSTEM TERMINALS OF ECU


  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY ECU (w/ Immobiliser System)

    B002964C01
    *1 Instrument Panel Junction Block Assembly (for LHD) - -
    B002964C07
    *1 Instrument Panel Junction Block Assembly (for RHD) - -
    B00277LC07
    *1 Body ECU - -

    1. Remove the body ECU from the instrument panel junction block assembly.

      for LHD:

      Click here

      for RHD:

      Click here

    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
      A-6 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-7 (IG) - Body ground - IG power supply Ignition switch ON 11 to 14 V
      A-1 (GND) - Body ground - Ground Always Below 1 Ω

    3. Install the body ECU to the instrument panel junction block assembly.

      for LHD:

      Click here

      for RHD:

      Click here

    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
      2Q-9 (ILE) - Body ground B - Body ground Illumination signal Map light and No. 1 room light*3 switch in DOOR position and map light assembly, No. 1 room light assembly*3 and transponder key coil*1 come on Below 1 V
      Map light and No. 1 room light*3 switch in DOOR position and map light assembly, No. 1 room light assembly*3 and transponder key coil*1 go off 11 to 14 V
      2L-4 (DCTY) - Body ground R - Body ground Driver side door courtesy light switch signal Driver side door open Below 1 V
      Driver side door closed Pulse generation
      G27-14 (PCTY) - Body ground LG - Body ground Front passenger side door courtesy light switch signal Front passenger side door open Below 1 V
      Front passenger side door closed Pulse generation
      G27-15 (LSWD) - Body ground R - Body ground Driver side door unlock detection switch signal Driver side door locked Pulse generation
      Driver side door unlocked Below 1 V
      G27-8 (KSW) - Body ground*1 G - Body ground Unlock warning switch assembly signal No key in ignition key cylinder Pulse generation
      Key in ignition key cylinder Below 1 V
      G27-9 (PRG) - Body ground*2 V - Body ground Signal output to certification ECU (smart key ECU assembly) Ignition switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch not pressed 11 to 14 V
      Ignition switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch pressed Pulse generation
      2Q-2 (ACTY) - Body ground Y - Body ground Door courtesy switch signal Any door open except driver door Below 1 V
      All doors closed except driver door Pulse generation
      2P-13 (DOMR) - Body ground L - 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 1.7 V
      G27-16 (RDA) - Body ground*2 W - Body ground Signal input from certification ECU (smart key ECU assembly) Ignition switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch not pressed 11 to 14 V
      Ignition switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch pressed Pulse generation
      G27-2 (LSWP) - Body ground Y - Body ground Door unlock detection switch input (except driver side door) Except front door RH unlocked Below 1 V
      Except front door RH locked Pulse generation

      *1: w/o Entry and Start System

      *2: w/ Entry and Start System

      *3: w/ No.1 Room Light Assembly

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


    1. Disconnect the G69 certification ECU (smart key ECU assembly) connector.

      B0024HTE03

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

      Tech Tips

      Measure the values on the wire harness side with the connectors disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G69-1 (+B) - Body ground P - Body ground Battery power supply Always 11 to 14 V
      G69-10 (E) - Body ground BR - Body ground Ground Always Below 1 Ω

    3. Reconnect the G69 certification ECU (smart key ECU assembly) connector.

    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
      G69-19 (SWIL) - G69-24 (AGND) G - SB Engine switch illumination drive output Engine switch illumination on 9 to 14 V
      Engine switch illumination off Below 2 V
      G69-9 (LSWP) - G69-10 (E) L - BR Door unlock detection switch input (except front door RH) Engine switch off, all doors closed, all doors unlocked and electrical key transmitter sub-assembly lock switch not pressed Below 1 V
      Engine switch off, all doors closed, all doors unlocked and electrical key transmitter sub-assembly lock switch pressed 8.5 V or higher
      G70-13 (RDA3) - G69-10 (E) W - BR Signal output to body ECU Engine switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch not pressed 11 to 14 V
      Engine switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch pressed Pulse generation
      G70-36 (PRG3) - G69-10 (E) V - BR Signal input from body ECU Engine switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch not pressed 11 to 14 V
      Engine switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch pressed Pulse generation
      G69-21 (ACCD) - G69-10 (E) B - BR ACC signal Engine switch off → Engine switch on (ACC) 1 V or less → 8.5 V or higher
      G69-20 (IG1D) - G69-10 (E) L - BR IG1 signal Engine switch on (ACC) → Engine switch on (IG) 1 V or less → 9 V or higher

  3. CHECK COMBINATION METER ASSEMBLY

    B0027UAN02

    1. Measure the voltage, resistance and pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G10-8 (DM-1) - Body ground*1 W-B - Body ground Ground Always Below 1 Ω
      G10-9 (PANL) - Body ground*1 L - Body ground Illumination signal Map light and No. 1 room light*2 switch in DOOR position and map light assembly and No. 1 room light assembly*2 come on Below 1 V
      Map light and No. 1 room light*2 switch in DOOR position and map light assembly and No. 1 room light assembly*2 go off 11 to 14 V
      G10-10 (DM+1) - Body ground*1 B - 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 1.7 V
      G10-12 (DOOR) - Body ground Y - Body ground Door courtesy switch signal Any door open except driver door Below 1 V
      All doors closed except driver door Pulse generation
      G10-15 (DCTY) - Body ground B - Body ground Driver side door courtesy light switch signal Driver side door open Below 1 V
      Driver side door closed 11 to 14 V
      G10-16 (PCTY) - Body ground G - Body ground Front passenger side door courtesy light switch signal Front passenger side door open Below 1 V
      Front passenger side door closed 11 to 14 V
      G10-17 (RLCY) - Body ground*2 V - Body ground Rear door LH courtesy light switch signal Rear door LH open Below 1 V
      Rear door RH closed 11 to 14 V
      G10-18 (RRCY) - Body ground*2 L - Body ground Rear door RH courtesy light switch signal Rear door LH open Below 1 V
      Rear door RH closed 11 to 14 V

      *1: w/o Immobiliser System

      *2: except Single Cab