CHARGING SYSTEM TERMINALS OF ECU


  1. CHECK POWER MANAGEMENT CONTROL ECU (w/o Stop and Start System)

    A01VDM7E03

    1. Disconnect the A52 and F74 power management control ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Condition Specified Condition
      F74-8 (AM21) - Body ground BE - Body ground Always 11 to 14 V
      A52-17 (LIN1) - Body ground Y - Body ground Always 10 kΩ or higher
      F74-12 (GND) - Body ground BR - Body ground Always Below 1 Ω

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

    3. Reconnect the A52 and F74 power management control ECU connectors.

    4. Measure the resistance, voltage and waveform according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A52-12 (VC) - A52-18 (E2) P - V Power source of battery current sensor assembly Ignition switch ON 4.5 to 5.5 V
      A52-15 (THB) - A52-18 (E2) SB - V Battery temperature sensor Ignition switch ON 0.2 to 4.8 V
      A52-13 (IB) - A52-18 (E2) L - V Battery current sensor Ignition switch ON 0.2 to 4.8 V
      A52-18 (E2) - Body ground V - Body ground Body ground (Battery current sensor) Ignition switch ON, engine stopped Below 1 Ω
      A52-5 (STA) - F74-12 (GND) P - BR Starter operation signal Cranking 6 V or higher
      F74-8 (AM21) - F74-12 (GND) BE - BR Battery power Always 11 to 14 V
      F74-1 (INH) - F74-12 (GND) L - BR Windshield wiper switch assembly

      Ignition switch ON

      Windshield wiper switch "HI" position

      		 11 to 14 V
      F74-2 (IG2) - F74-12 (GND) GR - BR Ignition switch signal Ignition switch ON 11 to 14 V

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

  2. CHECK ENGINE STOP AND START ECU (w/ Stop and Start System)

    A01VJWYE04

    1. Disconnect the A53 and F75 engine stop and start ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Condition Specified Condition
      A53-13 (AM21) - Body ground B - Body ground Always 11 to 14 V
      A53-14 (LIN1) - Body ground Y - Body ground Always 10 kΩ or higher
      F75-5 (GND2) - Body ground BR - Body ground Always Below 1 Ω
      F75-6 (GND) - Body ground BR - Body ground Always Below 1 Ω

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

    3. Reconnect the A53 and F75 engine stop and start ECU connectors.

    4. Measure the resistance, voltage and waveform according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A53-26 (VC) - A53-24 (E2) P - V Power source of battery current sensor assembly Ignition switch ON 4.5 to 5.5 V
      A53-27 (THB) - A53-24 (E2) SB - V Battery temperature sensor Ignition switch ON 0.2 to 4.8 V
      A53-25 (IB) - A53-24 (E2) L - V Battery current sensor Ignition switch ON 0.2 to 4.8 V
      A53-24 (E2) - Body ground V - Body ground Body ground (Battery current sensor) Ignition switch ON, engine stopped Below 1 Ω
      A53-4 (STA) - F75-6 (GND) P - BR Starter operation signal Cranking 6 V or higher
      A53-13 (AM21) - F75-6 (GND) B - BR Battery power Always 11 to 14 V
      F75-13 (INH) - F75-6 (GND) L - BR Windshield wiper switch assembly

      Ignition switch ON

      Windshield wiper switch "HI" position

      		 11 to 14 V
      F75-4 (IG2) - F75-6 (GND) GR - BR Ignition switch signal Ignition switch off 1 V or less
      Ignition switch ON, engine stopped 8 to 14 V

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