ELECTRICAL BACK DOOR OUTSIDE HANDLE SYSTEM > TERMINALS OF ECU

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CHECK INSTRUMENT PANEL J/B ASSEMBLY (BODY ECU)


  1. Disconnect the 1D, 1F, 1M, and B7 connectors.


    B112738E02

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

    Standard voltage and resistance:

    Symbols
    (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    BECU (1D-10) - Body ground
    		W - Body ground
    		+B (BECU) power supply
    		Constant
    		10 to 14 V
    GND1 (1F-10) - Body ground
    		W-B - Body ground
    		Ground
    		Constant
    		Below 1 Ω
    GND2 (1M-9) - Body ground
    		W-B - Body ground
    		Ground
    		Constant
    		Below 1 Ω
    BDSU (B7-3) - Body ground
    		W - Body ground
    		Back door opener switch (outside handle switch) input
    		Back door opener switch
    OFF → ON
    		10 kΩ or higher →
    Below 1 Ω

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

  3. Reconnect the J/B and ECU connectors and measure the voltage according to the value(s) in the table below.

    Standard voltage:

    Symbols
    (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    TR+ (B6-1)* - Body ground
    		BR - Body ground
    		Back door lock motor drive output
    		Back door opener switch (outside handle switch)
    OFF → ON
    		Below 1 V →
    10 to 14 V →
    Below 1 V

    HINT:
    1. *: w/o Power Back Door
    2. If the result is not as specified, the J/B (body ECU) may have a malfunction.


CHECK POWER BACK DOOR ECU (w/ Power back door system)


  1. Disconnect the P10 and P11 ECU connectors.


    B068464E04

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

    Standard voltage and resistance:

    Symbols
    (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    ECUB (P10-10) - Body ground
    		BR - Body ground
    		ECU (ECUB) power supply
    		Constant
    		10 to 14 V
    B (P11-2) - Body ground
    		Y - Body ground
    		+B (ECUB) power supply
    		Constant
    		10 to 14 V
    GND (P11-8) - Body ground
    		W-B - Body ground
    		Ground
    		Constant
    		Below 1 Ω

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

  3. Reconnect the ECU connectors and measure the voltage according to the value(s) in the table below.

    Standard voltage:

    Symbols
    (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    DC+ (P10-12) - Body ground
    		G - Body ground
    		Back door lock motor drive output (Close)
    		Back door OPEN →
    Not completely closed →
    Motor in normal rotation →
    Motor in reverse rotation →
    Operation completed (Back door CLOSED)
    		Below 1 V →
    Below 1 V →
    10 to 14 V →
    Below 1 V →
    Below 1 V →
    DC- (P10-11) - Body ground
    		B - Body ground
    		Back door lock motor drive output (Release)
    		Back door OPEN →
    Not completely closed →
    Motor in normal rotation →
    Motor in reverse rotation →
    Operation completed (Back door CLOSED)
    		Below 1 V →
    Below 1 V →
    Below 1 V →
    10 to 14 V →
    Below 1 V →

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