KEY REMINDER WARNING SYSTEM TERMINALS OF ECU


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

    A0052HQE02

    1. Disconnect the DB, DE, DG and D80 ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      DE-17 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      D80-4 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DB-12 (BECU) - Body ground W - Body ground Power source Always 11 to 14 V
      DG-1 (ALTB) - Body ground W - Body ground
      DE-23 (KSW) - Body ground L - Body ground Unlock warning switch signal No key in ignition key cylinder 10 kΩ or higher
      Key in ignition key cylinder Below 1 Ω

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

    3. Reconnect the DB, DE, DG and D80 ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition

      DA-21 (DCTY)*1 - Body ground

      DC-6 (DCTY)*2 - Body ground

      W*1 - Body ground

      SB*2 - Body ground

      		 Driver side door courtesy light switch Driver side door closed 11 to 14 V
      Driver side door open Below 1 V

      • *1: for LHD

      • *2: for RHD

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