CHARGING SYSTEM TERMINALS OF ECU

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

    U121419E02

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

      Tip:

      Perform the measurements with the connectors connected.

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      H71-1 (AM22) - Body ground

      L - Body ground

      Battery

      Always

      11 to 14 V

      H71-2 (AM21) - Body ground

      B - Body ground

      Battery

      Always

      11 to 14 V

      H71-6 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      H70-1 (LIN1) - Body ground

      V - Body ground

      LIN communication signal

      Ignition switch off (while LIN communication is stopped)

      10 kΩ or higher

      H70-23 (VC) - H70-25 (E2)

      W - BR

      Battery current sensor power supply

      Ignition switch ON

      4.5 to 5.5 V

      H70-28 (THB) - H70-25 (E2)

      P - BR

      Battery current sensor thermistor signal

      Ignition switch ON

      (Temperature of thermistor of battery current sensor: -30 to 90°C (-22 to 194°F))

      0.5 to 4.5 V

      H70-30 (IB) - H70-25 (E2)

      B - BR

      Battery current sensor signal

      Ignition switch ON

      (Temperature of thermistor of battery current sensor: -30 to 90°C (-22 to 194°F))

      0.5 to 4.5 V

      H70-25 (E2) - Body ground

      BR - Body ground

      Battery current sensor ground

      Always

      Below 1 Ω

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

  2. CHECK POWER MANAGEMENT CONTROL ECU (w/o Entry and Start System)

    U121420E02

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

      Tip:

      Perform the measurements with the connectors connected.

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      H72-8 (AM21) - Body ground

      B - Body ground

      Battery

      Always

      11 to 14 V

      H72-12 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      H73-17 (LIN1) - Body ground

      V - Body ground

      LIN communication signal

      Ignition switch off (while LIN communication is stopped)

      10 kΩ or higher

      H73-12 (VC) - H73-18 (E2)

      W - BR

      Battery current sensor power supply

      Ignition switch ON

      4.5 to 5.5 V

      H73-15 (THB) - H73-18 (E2)

      P - BR

      Battery current sensor thermistor signal

      Ignition switch ON

      (Temperature of thermistor of battery current sensor: -30 to 90°C (-22 to 194°F))

      0.5 to 4.5 V

      H73-13 (IB) - H73-18 (E2)

      B - BR

      Battery current sensor signal

      Ignition switch ON

      (Temperature of thermistor of battery current sensor: -30 to 90°C (-22 to 194°F))

      0.5 to 4.5 V

      H73-18 (E2) - Body ground

      BR - Body ground

      Battery current sensor ground

      Always

      Below 1 Ω

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