DYNAMIC RADAR CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU

    A006W78E03

    1. Disconnect the D14 ECU connector.

    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
      D14-30 (B) - Body ground L - Body ground ECU power supply circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      D14-25 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the D14 ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D14-7 (MODE) - Body ground BR - Body ground Distance control switch signal Ignition switch ON, distance control switch off 11 to 14 V
      Ignition switch ON, distance control switch on Below 1 V
      D14-32 (WIP2) - Body ground R - Body ground Windshield wiper switch signal Ignition switch ON, windshield wiper switch Hi 11 to 14 V
      Ignition switch ON, windshield wiper switch Lo Approximately 9 V
      Ignition switch ON, windshield wiper switch off Below 1 V

      If the result is not as specified, the ECU may have a malfunction.

  2. CHECK ECM

    A006SNEE21

    1. Disconnect the A40 and B39 ECM 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
      A40-2 (BATT) - Body ground P - Body ground Power source circuit Always 11 to 14 V
      A40-25 (IGSW) - Body ground B - Body ground IG power source circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      A40-34 (ST1-) - Body ground R-W - Body ground Stop light switch signal circuit Ignition switch ON, brake pedal released 11 to 14 V
      Ignition switch ON, brake pedal depressed Below 1 V
      A40-35 (STP) - Body ground V - Body ground Stop light switch signal circuit Brake pedal depressed 11 to 14 V
      Brake pedal released Below 1 V
      A40-23 (CCS) - Body ground L - Body ground Cruise control switch circuit Cruise control switch on Below 1.5 Ω
      Cruise control switch off 10 MΩ or higher
      +RES switch held on 235 to 245 Ω
      -SET switch held on 617 to 643 Ω
      CANCEL switch held on 1509 to 1571 Ω
      A40-47 (CCHG) - Body ground P - Body ground Cruise control switch circuit Cruise control switch on, MODE switch held on Below 1.5 Ω
      Cruise control switch on, MODE switch held off 10 MΩ or higher
      B39-109 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω

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