KEY REMINDER WARNING SYSTEM(w/o Power Switch) TERMINALS OF ECU


  1. CHECK MAIN BODY ECU AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A01UYDVE02
    Text in Illustration
    *1 Instrument Panel Junction Block Assembly *2 Main Body ECU

    1. Remove the main body ECU from the instrument panel junction block assembly.

    2. Disconnect the F57 main body ECU connector.

    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-11 (GND1) - Body ground None - Body ground Ground Always Below 1 Ω
      MB-30 (BECU) - Body ground None - Body ground Auxiliary Battery power supply Always 11 to 14 V
      MB-29 (ACC) - Body ground None - Body ground ACC power supply Ignition switch ACC 11 to 14 V
      MB-32 (IG) - Body ground None - Body ground IG power supply Ignition switch ON (IG) 11 to 14 V
      F57-17 (KSW) - Body ground Y - Body ground Unlock warning switch input No Key in ignition key cylinder (off) 10 kΩ or higher
      Key inserted ignition key cylinder (on) Below 1 Ω

    4. Install the main body ECU to the instrument panel junction block assembly.

    5. Reconnect the F57 main body ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      3D-36 (FLCY) - Body ground L - Body ground Front door LH courtesy light switch input Front door LH open Below 1 V
      Front door LH closed Pulse generation
      F57-19 (FRCY) - Body ground Y - Body ground Front door RH courtesy light switch input Front door RH open Below 1 V
      Front door RH closed Pulse generation
      F57-17 (KSW) - Body ground Y - Body ground Unlock warning switch input No Key in ignition key cylinder (off) 11 to 14 V
      Key inserted ignition key cylinder (on) Below 1 V