LIGHTING SYSTEM TERMINALS OF ECU


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

    B006IU3C26
    *A Main Body ECU (Multiplex Network Body ECU) with 1 Connector - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 1 Connector - -
    B006H6ZC21
    *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 instrument panel junction block assembly and main body ECU (multiplex network body 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
      3F-1 - Body ground W - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      3K-1 - Body ground B-R - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      3D-3 - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Connect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) 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
      3A-52 - Body ground BE - Body ground Front fog light drive output Light control switch in tail or head position, fog light switch in front position Below 1 V
      Light control switch in tail or head position, fog light switch off 11 to 14 V
      3D-11 - Body ground L - Body ground Tail signal output Light control switch in tail or head position 11 to 14 V
      Light control switch off Below 1 V
      3F-18 - Body ground R - Body ground Parking brake switch input Parking brake switch on Below 1 V
      Parking brake switch off 11 to 14 V
      3F-19 - Body ground SB - Body ground BKUP LP relay drive input Power switch on (IG), reverse (R) not selected Below 1 V
      Power switch on (IG), reverse (R) selected 11 to 14 V
      3F-31 - Body ground G - Body ground H-LP LH relay drive output Power switch on (IG) or light control switch in tail or head position Below 1 V
      Power switch off and light control switch off 11 to 14 V
      3H-10 - Body ground R - Body ground Back-up lights drive output Power switch on (IG), reverse (R) not selected Below 1 V
      Power switch on (IG), reverse (R) selected 11 to 14 V
      3H-21 - Body ground* B - Body ground Rear fog light drive output Light control switch in tail or head position, fog light switch in rear position 11 to 14 V
      Light control switch in tail or head position, fog light switch off position Below 1 V
      3H-30 - Body ground G - Body ground Taillights and license plate lights drive output Light control switch in tail or head position 11 to 14 V
      Light control switch off Below 1 V
      I18-1 (DIM) - Body ground BE - Body ground H-LP RH relay drive output Power switch on (IG) or light control switch in tail or head position Below 1 V
      Power switch off and light control switch off 11 to 14 V
      I18-8 (A) - Body ground W - Body ground Light control switch AUTO position signal input Light control switch in AUTO position Below 1 V
      Light control switch not in AUTO position Pulse generation
      I18-10 (HF) - Body ground SB - Body ground Dimmer switch high flash position signal input Dimmer switch in high flash position Below 1 V
      Dimmer switch not in high flash position Pulse generation
      I18-12 (HEAD) - Body ground G - Body ground Light control switch head position input Light control switch in head position Below 1 V
      Light control switch not in head position Pulse generation
      I18-19 (CLTB) - I18-21 (CLTE) BR - G Automatic light control sensor power supply output Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      I18-20 (CLTS) - Body ground R - Body ground Automatic light control sensor signal input Power switch off Below 1 V
      Power switch on (IG), light control switch in AUTO position

      Pulse generation

      (See waveform 1)
      I18-22 (TAIL) - Body ground BE - Body ground Light control switch tail position signal input Light control switch in tail or head position Below 1 V
      Light control switch not in tail or head position Pulse generation
      I18-23 (RFOG) - Body ground* W - Body ground Fog light switch rear position input Fog light switch in rear position Below 1 V
      Fog light switch off position Pulse generation
      I18-24 (HU) - Body ground P - Body ground Dimmer switch high position signal input Dimmer switch in high position Below 1 V
      Dimmer switch not in high position Pulse generation
      I18-26 (FFOG) - Body ground GR - Body ground Fog light switch front position input Fog light switch in front position Below 1 V
      Fog light switch off Pulse generation

      • *: w/ Rear Fog Light


      1. B006IGYN01

        Waveform 1

        Item Content
        Tester Connection I18-20 (CLTS) - Body ground
        Tool setting 2 V/DIV., 10 ms./DIV.
        Condition Power switch on (IG), light control switch in AUTO position

        Tech Tips

        The communication waveform changes according to the surrounding brightness.

  2. CHECK NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH (w/o Adaptive High Beam System)

    B006J3ME12

    1. Disconnect the A15 No. 1 headlight ECU sub-assembly LH connector.

    2. Measure the voltage and 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
      A15-4 (IG) - Body ground V - Body ground Ignition power supply Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      A15-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A15-13 (ECUB) - Body ground R - Body ground Auxiliary battery power supply Power switch off and light control switch off Below 1 V
      Power switch on (IG) or light control switch in tail or head position 11 to 14 V

    3. Connect the A15 No. 1 headlight ECU sub-assembly LH connector.

      Tech Tips


      • Since the A15 No. 1 headlight ECU sub-assembly LH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.

      • Since the B and C No. 1 headlight ECU sub-assembly LH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.

    4. Measure the voltage and check of pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A15-8 (RLD2) - Body ground G - Body ground Daytime running light LH drive output Daytime running light LH off Pulse generation
      Daytime running light LH on Below 1.8 V
      A15-16 (SBR) - A15-15 (SGR) G - R Rear height control sensor sub-assembly LH power supply Power switch on (IG) 4.75 to 5.25 V
      A15-17 (SHRL) - A15-15 (SGR) L - R Rear height control sensor sub-assembly LH signal input Power switch on (IG), vehicle unloaded, vehicle stopped

      Approximately 2.5 V

      (value decreases as the front of the vehicle is raised)
      A15-20 (LINL) - Body ground BE - Body ground LIN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      A15-23 (CANL) - Body ground W - Body ground CAN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      A15-24 (CANH) - Body ground L - Body ground CAN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      B-2 (CLL-) - B-19 (CLL+) - Clearance light drive output Clearance light off Below 1 V
      Clearance light on 11 to 14 V
      B-4 (LOLED2) - B-5 (LOLED1) - Low beam headlights drive output Low beam headlights off Below 1 V
      Low beam headlights on 11.1 to 17.7 V
      B-6 (FANB) - B-14 (FANG) - Headlight fan power source Low beam headlights off Below 1 V
      Low beam headlights on 4.5 to 5.5 V
      B-7 (ACTBI) - B-17 (ACTGI) - Headlight leveling motor power source Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      B-8 (ACTSI) - B-17 (ACTGI) - Headlight leveling motor signal output Power switch on (IG), low beam headlights on, vehicle height not changed Below 1 V
      Power switch on (IG), low beam headlights on, vehicle height changed and maintained for more than 3 seconds 1.0 to 14 V
      B-15 (FANP) - B-14 (FANG) - Headlight fan control signal input Low beam headlights off Below 1 V
      Low beam headlights on Pulse generation
      C-8 (HILED2) - C-9 (HILED1) - High beam headlights drive output High beam headlights off Below 1 V
      High beam headlights on 11.1 to 17.7 V

  3. CHECK NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH (w/ Adaptive High Beam System)

    B006J3ME12

    1. Disconnect the A15 No. 1 headlight ECU sub-assembly LH connector.

    2. Measure the voltage and 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
      A15-4 (IG) - Body ground V - Body ground Ignition power supply Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      A15-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A15-13 (ECUB) - Body ground R - Body ground Auxiliary battery power supply Power switch off and light control switch off Below 1 V
      Power switch on (IG) or light control switch in tail or head position 11 to 14 V

    3. Connect the A15 No. 1 headlight ECU sub-assembly LH connector.

      Tech Tips


      • Since the A15 No. 1 headlight ECU sub-assembly LH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.

      • Since the B and C No. 1 headlight ECU sub-assembly LH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.

    4. Measure the voltage and check of pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A15-6 (AZSW) - Body ground P - Body ground Adaptive high beam switch signal input Adaptive high beam switch on Below 1 V
      Adaptive high beam switch off 11 to 14 V
      A15-8 (RLD2) - Body ground G - Body ground Daytime running light LH drive output Daytime running light LH off Pulse generation
      Daytime running light LH on Below 1.8 V
      A15-16 (SBR) - A15-15 (SGR) G - R Rear height control sensor sub-assembly LH power supply Power switch on (IG) 4.75 to 5.25 V
      A15-17 (SHRL) - A15-15 (SGR) L - R Rear height control sensor sub-assembly LH signal input Power switch on (IG), vehicle unloaded, vehicle stopped

      Approximately 2.5 V

      (value decreases as the front of the vehicle is raised)
      A15-20 (LINL) - Body ground BE - Body ground LIN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      A15-21 (LCL) - Body ground W - Body ground CAN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      A15-22 (LCH) - Body ground L - Body ground CAN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      A15-23 (CANL) - Body ground W - Body ground CAN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      A15-24 (CANH) - Body ground L - Body ground CAN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      B-1 (HI-) - B-10 (HI+) - Add high beam headlights drive output High beam headlights off Below 1 V
      High beam headlights on 11 to 14 V
      B-2 (CLL-) - B-19 (CLL+) - Clearance light drive output Clearance light off Below 1 V
      Clearance light on 11 to 14 V
      B-4 (LOLED2) - B-3 (LOLED0) - Low beam headlights drive output Low beam headlights off Below 1 V
      Low beam headlights on 11.1 to 17.7 V
      B-6 (FANB) - B-14 (FANG) - Headlight fan power source Low beam headlights off Below 1 V
      Low beam headlights on 4.5 to 5.5 V
      B-7 (ACTBI) - B-17 (ACTGI) - Headlight leveling motor power source Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      B-15 (FANP) - B-14 (FANG) - Headlight fan control signal input Low beam headlights off Below 1 V
      Low beam headlights on Pulse generation
      C-8 (HILED2) - C-7 (HILED0) - High beam headlights drive output High beam headlights off Below 1 V
      High beam headlights on 6.3 to 9.8 V
      C-13 (LINLI) - Body ground - LIN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation

  4. CHECK NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH (w/o Adaptive High Beam System)

    B006J3ME13

    1. Disconnect the A16 No. 1 headlight ECU sub-assembly RH connector.

    2. Measure the voltage and 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
      A16-4 (IG) - Body ground V - Body ground Ignition power supply Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      A16-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A16-13 (ECUB) - Body ground L - Body ground Auxiliary battery power supply Power switch off and light control switch off Below 1 V
      Power switch on (IG) or light control switch in tail or head position 11 to 14 V

    3. Connect the A16 No. 1 headlight ECU sub-assembly RH connector.

      Tech Tips


      • Since the A16 No. 1 headlight ECU sub-assembly RH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.

      • Since the B and C No. 1 headlight ECU sub-assembly RH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.

    4. Measure the voltage and check of pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A16-8 (RLD2) - Body ground L - Body ground Daytime running light RH drive output Daytime running light RH off Pulse generation
      Daytime running light RH on Below 1.8 V
      A16-20 (LINL) - Body ground BE - Body ground LIN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      B-2 (CLL-) - B-19 (CLL+) - Clearance light drive output Clearance light off Below 1 V
      Clearance light on 11 to 14 V
      B-4 (LOLED2) - B-5 (LOLED1) - Low beam headlights drive output Low beam headlights off Below 1 V
      Low beam headlights on 11.1 to 17.7 V
      B-6 (FANB) - B-14 (FANG) - Headlight fan power source Low beam headlights off Below 1 V
      Low beam headlights on 4.5 to 5.5 V
      B-7 (ACTBI) - B-17 (ACTGI) - Headlight leveling motor power source Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      B-8 (ACTSI) - B-17 (ACTGI) - Headlight leveling motor signal output Power switch on (IG), low beam headlights on, vehicle height not changed Below 1 V
      Power switch on (IG), low beam headlights on, vehicle height changed and maintained for more than 3 seconds 1.0 to 14 V
      B-15 (FANP) - B-14 (FANG) - Headlight fan control signal input Low beam headlights off Below 1 V
      Low beam headlights on Pulse generation
      C-8 (HILED2) - C-9 (HILED1) - High beam headlights drive output High beam headlights off Below 1 V
      High beam headlights on 11.1 to 17.7 V

  5. CHECK NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH (w/ Adaptive High Beam System)

    B006J3ME13

    1. Disconnect the A16 No. 1 headlight ECU sub-assembly RH connector.

    2. Measure the voltage and 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
      A16-4 (IG) - Body ground V - Body ground Ignition power supply Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      A16-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A16-13 (ECUB) - Body ground L - Body ground Auxiliary battery power supply Power switch off and light control switch off Below 1 V
      Power switch on (IG) or light control switch in tail or head position 11 to 14 V

    3. Connect the A16 No. 1 headlight ECU sub-assembly RH connector.

      Tech Tips


      • Since the A16 No. 1 headlight ECU sub-assembly RH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.

      • Since the B and C No. 1 headlight ECU sub-assembly RH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.

    4. Measure the voltage and check of pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A16-8 (RLD2) - Body ground L - Body ground Daytime running light RH drive output Daytime running light RH off Pulse generation
      Daytime running light RH on Below 1.8 V
      A16-20 (LINL) - Body ground BE - Body ground LIN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      A16-21 (LCL) - Body ground W - Body ground CAN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      A16-22 (LCH) - Body ground R - Body ground CAN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation
      B-1 (HI-) - B-10 (HI+) - Add high beam headlights drive output High beam headlights off Below 1 V
      High beam headlights on 11 to 14 V
      B-2 (CLL-) - B-19 (CLL+) - Clearance light drive output Clearance light off Below 1 V
      Clearance light on 11 to 14 V
      B-4 (LOLED2) - B-3 (LOLED0) - Low beam headlights drive output Low beam headlights off Below 1 V
      Low beam headlights on 11.1 to 17.7 V
      B-6 (FANB) - B-14 (FANG) - Headlight fan power source Low beam headlights off Below 1 V
      Low beam headlights on 4.5 to 5.5 V
      B-7 (ACTBI) - B-17 (ACTGI) - Headlight leveling motor power source Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      B-15 (FANP) - B-14 (FANG) - Headlight fan control signal input Low beam headlights off Below 1 V
      Low beam headlights on Pulse generation
      C-8 (HILED2) - C-7 (HILED0) - High beam headlights drive output High beam headlights off Below 1 V
      High beam headlights on 6.3 to 9.8 V
      C-13 (LINLI) - Body ground - LIN communication line Power switch off Below 1 V
      Power switch on (IG) Pulse generation

  6. CHECK COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE)

    B006I3ZE02

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I7-5 (ER) - Body ground GR - Body ground RH turn signal switch signal Power switch on (IG), RH turn signal switch off 11 to 14 V
      Power switch on (IG), RH turn signal switch on Below 1 V
      I7-9 (SW) - Body ground BE - Body ground Turn signal switch signal Power switch on (IG), LH and RH turn signal switch off 11 to 14 V
      Power switch on (IG), LH or RH turn signal switch on Below 1 V
      I7-10 (HAZ) - Body ground L - Body ground Hazard warning signal switch signal Hazard warning signal switch not pressed 11 to 14 V
      Hazard warning signal switch pressed Below 1 V
      I7-11 (EL) - Body ground W - Body ground LH turn signal switch signal Power switch on (IG), LH turn signal switch off 11 to 14 V
      Power switch on (IG), LH turn signal switch on Below 1 V

  7. CHECK HYBRID VEHICLE CONTROL ECU

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  8. CHECK ELECTRIC VEHICLE CHARGER ASSEMBLY

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