SEAT BELT WARNING SYSTEM > TERMINALS OF ECU

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COMBINATION METER ASSEMBLY

E106913E15

  1. Disconnect the D1 combination meter assembly connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D1-1 (IG+) - Body ground
    		SB - Body ground
    		Ignition switch signal
    		Ignition switch off → ON
    		Below 1 V → 11 to 14 V
    D1-2 (B) - Body ground
    		P - Body ground
    		Battery
    		Always
    		11 to 14 V
    D1-24 (ET) - Body ground
    		BR - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the combination meter assembly connector.

  4. Measure the voltage of the wire harness side connector.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D1-5 (RRSB) - Body ground
    		LG - Body ground
    		Rear seat inner belt assembly signal (RH side)
    		Rear RH seat belt is unfastened
    		Below 1 V
    Rear RH seat belt is fastened
    		11 to 14 V
    D1-6 (RLSB) - Body ground
    		R - Body ground
    		Rear seat inner belt assembly signal (LH side)
    		Rear LH seat belt is unfastened
    		Below 1 V
    Rear LH seat belt is fastened
    		11 to 14 V
    D1-7 (RRBT) - Body ground
    		B - Body ground
    		Rear RH seat belt warning light signal
    		Rear RH seat belt warning light ON → OFF
    		Below 1 V → 11 to 14 V
    D1-9 (RLBT) - Body ground
    		SB - Body ground
    		Rear LH seat belt warning light signal
    		Rear LH seat belt warning light ON → OFF
    		Below 1 V → 11 to 14 V
    D1-10 (P/SB) - Body ground
    		V - Body ground
    		Front seat inner belt assembly signal (passenger side)
    		Front passenger seat is occupied and its seat belt is unfastened
    		Below 1 V
    Front passenger seat is occupied and its seat belt is fastened
    		11 to 14 V
    D1-20 (CANL) - Body ground
    		W - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    D1-21 (CANH) - Body ground
    		G - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    D2-16 (PBLT) - Body ground
    		Y - Body ground
    		Passenger seat belt warning light signal
    		Ignition switch ON
    Front passenger seat belt warning light blinks → off
    		Below 1 V ←→ 11 to 14 V → 11 to 14 V
    If the result is not as specified, the combination meter assembly may have a malfunction.


CENTER AIRBAG SENSOR ASSEMBLY

C108107E10


Terminal No.
Terminal Symbol
Destination
G15-14
PBE-
Front seat inner belt assembly (passenger side)
G15-15
PBE+
Front seat inner belt assembly (passenger side)

MAIN BODY ECU

B210280E01


Text in Illustration 
*1
Instrument Panel Junction Block

B210281E01


Text in Illustration 
*1
Main body ECU (w/ Theft Deterrent System)

B210282E02


Text in Illustration 
*1
Main body ECU (w/o Theft Deterrent System)

  1. Remove the main body ECU.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    3F-11 (GND1) - Body ground
    		-
    		Ground
    		Always
    		Below 1 Ω
    3F-29 (ACC)*1 - Body ground
    		-
    		Ignition power supply (ACC signal)
    		Ignition switch ACC → off
    		11 to 14 V → Below 1 V
    3F-30 (BECU) - Body ground
    		-
    		+B (power system signal system) power supply
    		Always
    		11 to 14 V
    3F-32 (IG)*1 - Body ground
    		-
    		Ignition power supply (IG signal)
    		Ignition switch ON → off
    		11 to 14 V → Below 1 V

    1. *1: w/o Smart Entry and Start System
    If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the main body ECU connectors.

  4. Measure the voltage of the wire harness side connectors.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    3E-20 (DBKL) - Body ground
    		SB - Body ground
    		Front seat inner belt assembly signal (driver side)
    		Ignition switch ON
    Tongue plate fastened
    		Below 1 V
    Ignition switch ON
    Tongue plate unfastened
    		11 to 14 V
    D42-13 (CANL) - Body ground
    		W - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    D42-14 (CANH) - Body ground
    		R - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    3D-55 - Body ground
    		V - Body ground
    		Power supply for front passenger seat belt warning light
    		Ignition switch ON
    		11 to 14 V
    If the result is not as specified, there may be a malfunction in the wire harness.