AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL 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
      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
      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

  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