AFS (ADAPTIVE FRONT-LIGHTING SYSTEM) TERMINALS OF ECU

  1. CHECK AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)

    E261582N01

    1. Disconnect the A93 AFS ECU (headlight swivel ECU assembly) connector.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A93-22 (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

      A93-14 (IGS) - Body ground

      V - Body ground

      Swivel motor power supply

      Ignition switch off

      Below 1 V

      Ignition switch ON

      11 to 14 V

      A93-15 (IG) - Body ground

      L - 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 A93 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

      A93-21 (SGF) - A93-22 (E1)

      L - W-B

      Rear height control sensor ground

      Always

      Below 1 Ω

      A93-27 (LL1-) - A93-22 (E1)

      SB - W-B

      Swivel motor LH ground

      Always

      Below 1 Ω

      A93-28 (LR1-) - A93-22 (E1)

      B - W-B

      Swivel motor RH ground

      Always

      Below 1 Ω

      If the result is not as specified, the AFS ECU (headlight swivel ECU assembly) may be malfunctioning.

    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

      A93-1 (SMBL) - A93-22 (E1)

      W - W-B

      Swivel motor LH power supply

      Ignition switch off

      Below 1 V

      Ignition switch ON

      11 to 14 V

      A93-2 (SMBR) - A93-22 (E1)

      Y - W-B

      Swivel motor RH power supply

      Ignition switch off

      Below 1 V

      Ignition switch ON

      11 to 14 V

      A93-6 (RSW)*1 - Body ground

      R - Body ground

      Reverse signal input

      Back-up light off

      Below 1 V

      Back-up light on

      11 to 14 V

      A93-7 (INIT) - A93-22 (E1)

      Y - 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

      A93-10 (SMR) - A93-22 (E1)

      L - W-B

      Swivel motor RH LIN communication

      Ignition switch off

      Below 1 V

      Ignition switch ON

      Pulse generation

      A93-11 (RHT) - A93-22 (E1)

      W - W-B

      Swivel motor RH LIN communication

      Ignition switch off

      Below 1 V

      Ignition switch ON

      Pulse generation

      A93-12 (CANH) - A93-22 (E1)

      Y - W-B

      CAN communication

      Ignition switch off

      Below 1 V

      Ignition switch ON

      Pulse generation

      A93-13 (CANL) - A93-22 (E1)

      W - W-B

      CAN communication

      Ignition switch off

      Below 1 V

      Ignition switch ON

      Pulse generation

      A93-18 (B) - A93-21 (SGF)

      SB - L

      Rear height control sensor power supply

      Ignition switch off

      Below 1 V

      Ignition switch ON

      4.7 to 5.2 V

      A93-19 (SHRL) - A93-21 (SGF)

      GR - L

      Rear height control sensor signal

      Ignition switch off

      Below 1 V

      Ignition switch ON

      0.5 to 4.5 V

      A93-29 (SML) - A93-22 (E1)

      P - W-B

      Swivel motor LH LIN communication

      Ignition switch off

      Below 1 V

      Ignition switch ON

      Pulse generation

      A93-30 (LHT) - A93-22 (E1)

      LG - W-B

      Swivel motor LH LIN communication

      Ignition switch off

      Below 1 V

      Ignition switch ON

      Pulse generation

      A93-32 (MSW) - Body ground

      B - Body ground

      Headlight swivel main switch signal input

      Headlight swivel main switch off (AFS ON condition)

      11 to 14 V

      Headlight swivel main switch on (AFS OFF condition)

      Below 1 V

      • *1: for Manual Transaxle or Multi-mode Manual Transaxle

      If the result is not as specified, the AFS ECU (headlight swivel ECU assembly) may be malfunctioning.