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Terminals Of Ecu

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  1. CHECK THEFT WARNING ECU ASSEMBLY (THEFT DETERRENT ECU) 
    Fig 1: Identifying Theft Warning ECU Assembly Connector Terminal (Theft Deterrent ECU)
    G04830858Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D26 ECU connector.
    2. Check the voltage or resistance of each terminal of the wire harness side connector.

      Standard: 

      VOLTAGE CONDITION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      +B1 (D26-11) - Body ground B - Body ground Battery Always 11 to 14 V
      +B2 (D26-13) - Body ground L(1) - Body ground Battery Always 11 to 14 V
      BR(2) - Body ground
      IG (D26-9) - E (D26-16) GR - W-B Ignition switch signal Ignition switch OFF → ON Below 1 V→11 to 14 V
      LSR (D26-6)(1) - Body ground 0 - Body ground Back door unlock detection switch signal Back door LOCK→UNLOCK 10 kΩ or higher→Below 1 Ω
      LUG (D26-6)(2) - Body ground P - Body ground Luggage compartment door unlock detection switch signal Luggage compartment door LOCK→UNLOCK 10 kΩ or higher→Below 1 Ω
      E (D26-16) - Body ground W-B - Body ground Ground Always Below 1 Ω
      (1) Hatchback
      (2) Sedan

      If the result is not as specified, there may be a malfunction on the wire harness side.
    3. Reconnect the D26 ECU connector.
    4. Check the voltages of each terminal of the connector.

      Standard voltage: 

      VOLTAGE CONDITION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BRK+ (D26-24) - Body ground P - Body ground Alarm BERKES Communication Theft deterrent system is in alarm sounding state. Pulse generation (1.5 V ← → Below 1.2 V)
      BRK- (D26-25) - Body ground O - Body ground Alarm BERKES Communication All doors are locked using key (Theft deterrent system is in arming preparation state). Pulse generation (1.5 V ← → Below 1.2 V)
      SH-(D26-15) - Body ground 0 - Body ground Security horn Security horn is sounding (Theft deterrent system is in alarm sounding state). Pulse generation (11 to 14 V ← → Below 1 V)
      +B1 (D26-11) - E (D26-16) B-W-B +B power supply Always 11 to 14 V
      KSW (D26-7) - E (D26-16) Y-W-B Key unlock warning switch input Key unlock warning switch ON (Key inserted)→OFF (Key removed from ignition key cylinder) Below 1 V→11 to 14 V
      IND (D26-29) - E (D26-16) LG(1) - W-B Security indicator Security indicator lights up (illuminates for 30 seconds in alarm sounding state, flashes when immobilizer system is operating). 5 V or more
      G(2) - W-B
      DSWH (D26-4) - E (D26-16) W-W-B Engine hood courtesy switch input Engine hood courtesy switch OFF (Closed)→ON (Open) 11 to 14 V→Below 1 V
      (1) Hatchback
      (2) Sedan

      If the result is not as specified, the theft warning ECU assembly may be malfunctioning.
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