AFS (ADAPTIVE FRONT-LIGHTING SYSTEM) TERMINALS OF ECU


  1. CHECK AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)


    1. Disconnect the A35 AFS ECU (headlight swivel ECU assembly) connector.

      B000HKBE21

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A35-22 (E1) - Body ground W-B - Body ground AFS ECU (headlight swivel ECU assembly) ground Always Below 1 Ω

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

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A35-14 (IGS) - Body ground V - Body ground Swivel motor power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      A35-15 (IG) - Body ground LG - Body ground AFS ECU (headlight swivel ECU assembly) power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V

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

    4. Reconnect the A35 AFS ECU (headlight swivel ECU assembly) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A35-21 (SGR) - A35-22 (E1) G - W-B Rear height control sensor ground Always Below 1 Ω
      A35-23 (SMGL) - A35-22 (E1) V - W-B Swivel motor LH ground Always Below 1 Ω
      A35-24 (SMGR) - A35-22 (E1) R - W-B Swivel motor RH ground Always Below 1 Ω
      A35-27 (LH-) - A35-22 (E1) GR - W-B Leveling motor LH ground Always Below 1 Ω
      A35-28 (RH-) - A35-22 (E1) Y - W-B Leveling motor RH ground Always Below 1 Ω

      If the result is not as specified, the AFS ECU (headlight swivel ECU assembly) may have a malfunction.

    6. Measure the voltage or check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A35-1 (SMBL) - A35-22 (E1) GR - W-B Swivel motor LH power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 16 V
      A35-2 (SMBR) - A35-22 (E1) BE - W-B Swivel motor RH power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 16 V
      A35-3 (LH+) - A35-22 (E1) Y - W-B Leveling motor LH power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 16 V
      A35-4 (RH+) - A35-22 (E1) R - W-B Leveling motor RH power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 16 V
      A35-7 (SPDL) - A35-22 (E1) SB - W-B Initialization signal Ignition switch ON, terminals LVL and GND of DLC3 connected Below 1 V
      Ignition switch ON, terminals LVL and GND of DLC3 not connected 4.5 to 5.5 V
      A35-10 (SMR) - A35-22 (E1) L - W-B Swivel motor RH LIN communication Ignition switch off Below 1 V
      Ignition switch ON Pulse generation
      A35-11 (RHE) - A35-22 (E1) LG - W-B Leveling motor RH LIN communication Ignition switch off Below 1 V
      Ignition switch ON Pulse generation
      A35-12 (MPX1) - A35-22 (E1) B - W-B CAN communication Ignition switch off Below 1 V
      Ignition switch ON Pulse generation
      A35-13 (MPX2) - A35-22 (E1) W - W-B CAN communication Ignition switch off Below 1 V
      Ignition switch ON Pulse generation
      A35-18 (SBR) - A35-21 (SGR) B - G Rear height control sensor power supply Ignition switch off Below 1 V
      Ignition switch ON 4.5 to 5.5 V
      A35-19 (SHRL) - A35-21 (SGR) L - G Rear height control sensor signal Ignition switch off Below 1 V
      Ignition switch ON 1 to 4 V
      A35-29 (SML) - A35-22 (E1) P - W-B Swivel motor LH LIN communication Ignition switch off Below 1 V
      Ignition switch ON Pulse generation
      A35-30 (LHE) - A35-22 (E1) W - W-B Leveling motor LH LIN communication Ignition switch off Below 1 V
      Ignition switch ON Pulse generation

      If the result is not as specified, the AFS ECU (headlight swivel ECU assembly) may have a malfunction.