SEAT BELT WARNING SYSTEM > TERMINALS OF ECU

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COMBINATION METER ASSEMBLY


  1. Disconnect the H19 combination meter assembly connector.


    B129553E09

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

    HINT:
    Measure the values on the wire harness side with the connector disconnected.


    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    H19-9 (E2) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    H19-29 (P/SB) - Body ground
    		B - Body ground
    		Front passenger seat belt buckle switch signal
    		Front passenger seat occupied, seat belt fastened
    		10 kΩ or higher
    H19-29 (P/SB) - Body ground
    		B - Body ground
    		Front passenger seat belt buckle switch signal
    		Front passenger seat occupied, seat belt unfastened
    		Below 1 Ω
    H19-4 (RRSB) - Body ground*
    		R - Body ground
    		Rear RH seat belt buckle switch signal
    		Rear RH seat belt fastened
    		10 kΩ or higher
    H19-4 (RRSB) - Body ground*
    		R - Body ground
    		Rear RH seat belt buckle switch signal
    		Rear RH seat belt unfastened
    		Below 1 Ω
    H19-5 (RCSB) - Body ground*
    		L - Body ground
    		Rear center seat belt buckle switch signal
    		Rear center seat belt fastened
    		10 kΩ or higher
    H19-5 (RCSB) - Body ground*
    		L - Body ground
    		Rear center seat belt buckle switch signal
    		Rear center seat belt unfastened
    		Below 1 Ω
    H19-6 (RLSB) - Body ground*
    		B - Body ground
    		Rear LH seat belt buckle switch signal
    		Rear LH seat belt fastened
    		10 kΩ or higher
    H19-6 (RLSB) - Body ground*
    		B - Body ground
    		Rear LH seat belt buckle switch signal
    		Rear LH seat belt unfastened
    		Below 1 Ω
    1. *: w/ Rear Seat Belt Warning
    If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the H19 combination meter assembly connector.

  4. Measure the voltage according to the value(s) in the table below.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    H19-21 (IG2) - Body ground
    		BR - Body ground
    		Power switch power supply
    		Power switch off
    		Below 1 V
    H19-21 (IG2) - Body ground
    		BR - Body ground
    		Power switch power supply
    		Power switch on (IG)
    		11 to 14 V
    If the result is not as specified, the combination meter assembly may have a malfunction.


MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


  1. Disconnect the H16 and H18 main body ECU (multiplex network body ECU) connectors.


    B273153E01

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

    HINT:
    Measure the values on the wire harness side with the connector disconnected.


    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    H18-3 (LCTY) - Body ground
    		G - Body ground
    		Rear door courtesy light switch LH input
    		Rear door LH closed (OFF) → open (ON)
    		10 kΩ or higher → Below 1 Ω
    H16-6 (RCTY) - Body ground
    		G - Body ground
    		Rear door courtesy light switch RH input
    		Rear door closed (OFF) → open (ON)
    		10 kΩ or higher → Below 1 Ω
    If the result is not as specified, there may be a malfunction in the wire harness.


CHECK AIRBAG SENSOR ASSEMBLY

C123353E42


Terminal No.
Terminal Symbol
Destination
P1-11*1
LBE+
Front seat inner belt assembly (for driver)
P1-12*1
LBE-
Front seat inner belt assembly (for driver)
Q1-14*2
RBE-
Front seat inner belt assembly (for driver)
Q1-15*2
RBE+
Front seat inner belt assembly (for driver)
  1. *1: for LHD
  2. *2: for RHD