POWER DOOR LOCK CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK DRIVER SIDE JUNCTION BLOCK (INTEGRATION RELAY)

    A01J38RE03

    1. Disconnect the 2A, 2D, 2H and 2L junction block connectors.

    2. Measure the voltage and resistance of the wire harness side connector.

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BECU (2L-12) - Body ground L - Body ground +B (BECU) power supply Always 10 to 14 V
      ALTB (2H-4) - Body ground LG - Body ground +B (power system, generator system) power supply Always 10 to 14 V
      GND (2D-9, 18) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L1 (2A-4) - Body ground L - Body ground Door control switch lock input Door control switch OFF 10 kΩ or higher
      L1 (2A-4) - Body ground L - Body ground Door control switch lock input Door control switch LOCK Below 1 Ω
      UL1 (2D-4) - Body ground L-W - Body ground Door control switch unlock input Door control switch OFF 10 kΩ or higher
      UL1 (2D-4) - Body ground L-W - Body ground Door control switch unlock input Door control switch UNLOCK Below 1 Ω

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

    3. Reconnect the 2A, 2D, 2H and 2L junction block connectors.

    4. Measure the voltage of the connectors.

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    ACT+ (2R-28) - Body ground L - Body ground Door lock motor LOCK drive output (driver door and rear LH door) Door control switch or driver door key cylinder OFF Below 1 V
    ACT+ (2R-28) - Body ground L - Body ground Door lock motor LOCK drive output (driver door and rear LH door) Door control switch or driver door key cylinder LOCK 10 to 14 V
    ACT+ (2K-11) - Body ground L - Body ground Door lock motor LOCK drive output (passenger door, rear RH door and back door) Door control switch or driver door key cylinder OFF Below 1 V
    ACT+ (2K-11) - Body ground L - Body ground Door lock motor LOCK drive output (passenger door, rear RH door and back door) Door control switch or driver door key cylinder LOCK 10 to 14 V
    ACT- (2R-27) - Body ground L-Y - Body ground Door lock motor UNLOCK drive output (driver door and rear LH door) Door control switch or driver door key cylinder OFF Below 1 V
    ACT- (2R-27) - Body ground L-Y - Body ground Door lock motor UNLOCK drive output (driver door and rear LH door) Door control switch or driver door key cylinder UNLOCK 10 to 14 V
    ACT- (2K-10) - Body ground L-Y - Body ground Door lock motor UNLOCK drive output (passenger door, rear RH door and back door) Door control switch or driver door key cylinder OFF Below 1 V
    ACT- (2K-10) - Body ground L-Y - Body ground Door lock motor UNLOCK drive output (passenger door, rear RH door and back door) Door control switch or driver door key cylinder UNLOCK 10 to 14 V
    DCTY (2O-27) - Body ground R-B - Body ground Driver side courtesy switch input Driver side door closed Below 1 V
    DCTY (2O-27) - Body ground R-B - Body ground Driver side courtesy switch input Driver side door open 10 to 14 V

    • If the result is not as specified, the junction block relay (integration relay) may have a malfunction.