KEY REMINDER WARNING SYSTEM(w/o Entry and Start System) TERMINALS OF ECU


  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (NETWORK GATEWAY ECU)

    A004JW8E05
    Text in Illustration
    *1 Instrument Panel Junction Block Assembly *2 Main Body ECU (Network Gateway ECU)

    1. Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.

    2. Disconnect the D5, D6 and A73 main body ECU (network gateway ECU) connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      MB-1 (BECU) - Body ground None - Body ground Battery power supply Always 11 to 14 V
      MB-8 (IG) - Body ground None - Body ground Ignition switch power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      MB-9 (ACC) - Body ground None - Body ground ACC power supply Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      MB-11 (GND) - Body ground None - Body ground Ground Always Below 1 Ω
      MB-32 (BMPX) - Body ground None - Body ground Battery power supply Always 11 to 14 V
      D5-22 (KSW) - Body ground BR - Body ground Unlock warning switch input No Key in ignition key cylinder (off) Below 1 V
      Key inserted ignition key cylinder (on) 11 to 14 V
      D6-1 (GND) - Body ground B - Body ground Ground Always Below 1 Ω
      A73-4 (GND) - Body ground B-Y - Body ground Ground Always Below 1 Ω

    4. Reconnect the D5, D6 and A73 main body ECU (network gateway ECU) connectors.

    5. Install the main body ECU (network gateway ECU) to the instrument panel junction block assembly.

    6. Measure the voltage, check for pulse according to the valve(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      3A-28 - Body ground V - Body ground Driver side door courtesy light switch input Driver side door open Below 1 V
      Driver side door closed 11 to 14 V