BACK DOOR CLOSER SYSTEM > TERMINALS OF ECU

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CHECK POWER BACK DOOR ECU


  1. Disconnect the P10 and P11 ECU connectors and measure the voltage and resistance according to the value(s) in the table below.


    B068464E04


    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
    IG (P10-9) - Body ground
    		GR - Body ground
    		Ignition switch input
    		Ignition switch
    OFF → ON
    		Below 1 V → 10 to 14 V
    CTYE (P10-7) - Body ground
    		P - Body ground
    		Back door courtesy switch input
    		Back door
    CLOSED → OPEN
    		10 kΩ or higher → Below 1 Ω
    CTYO (P10-19) - Body ground
    		BR - Body ground
    		Back door courtesy switch output
    		Back door
    CLOSED → OPEN
    		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.

  2. 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
    POS (P10-21) - Body ground
    		LG - Body ground
    		Back door lock position switch input
    		Back door OPEN →
    Closer in operation →
    CLOSED
    		Below 1 V →
    10 to 14 V →
    Below 1 V
    FUL (P10-18) - Body ground
    		V - Body ground
    		Back door lock full-latch switch input
    		Back door CLOSED →
    OPEN
    		10 to 14 V →
    Below 1 V
    HAF (P10-8) - Body ground
    		R - Body ground
    		Back door lock half-latch switch input
    		Back door OPEN →
    Closer in operation →
    CLOSED
    		Below 1 V →
    10 to 14 V →
    Below 1 V
    DC+ (P10-12) - Body ground
    		G - Body ground
    		Back door lock closer 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 closer 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.


CHECK INSTRUMENT PANEL J/B ASSEMBLY (BODY ECU)


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


    B111693E03

  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
    ALTB (1D-16) - Body ground
    		W - Body ground
    		+B (power system, generator system) power supply
    		Constant
    		10 to 14 V
    BATB (1A-1) - Body ground
    		B - Body ground
    		+B (power system, battery system) 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
    BCTY (B7-25) - Body ground
    		P - Body ground
    		Back door courtesy switch input
    		Back door
    CLOSED → OPEN
    		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.