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SEAT BELT – SEAT BELT WARNING SYSTEM SB–19 SB (b) Measure the voltage and resistance of the wire harness side connectors. Standard: If the result is not as specified, there may be a (c) Reconnect the main body ECU (driver side J/B) connectors. (d) Measure the voltage of the wire harness side connectors. Standard voltage: If the result is not as specified, there may be a DIAGNOSIS SYSTEM 1. CHECK DLC3 The terminal arrangement of the DLC3 complies NOTICE: Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition 1B-4 (BECU) Body ground W-R - Body ground Power source circuit (From battery) Always 11 to 14 V 1H-2 (GND1) - Body Ground W-B - Body ground Ground Always Below 1V 1A-7 (GND2) - Body ground W - Body ground Ground Always Below 1 Ω Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition 1F-8 (SIG) - Body ground B-R - Body ground Ignition switch signal Ignition switch OFF → ON Below 1V → 11 to 14V E6-13 (DBKL) - Body ground G-Y - Body ground Front seat inner belt signal (Front driver side) Ignition switch ON Front seat belt is unfastened (Front driver side) Below 1 V E6-13 (DBKL) - Body ground G-Y - Body ground Front seat inner belt signal (Front driver side) Ignition switch ON Front seat belt is fastened (Front driver side) 11 to 14 V CG SG BAT SIL CANH CANL H100769E16 Symbols (Terminal No.) Terminal Description Condition Specified Condition SIL (7) - SG (5) Bus " +" line During transmission Pulse generation CG (4) - Body ground Chassis ground Always Below 1 Ω SG (5) - Body ground Signal ground Always Below 1 Ω BAT (16) - Body ground Battery positive Always 11 to 14 V CANH (6) - CANL (14) CAN bus line Ignition switch OFF* 54 to 69 Ω CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch OFF* 200 Ω or higher CANL (14) - CG (4) LOW-level CAN bus line Ignition switch OFF* 200 Ω or higher CANH (6) - BAT (16) HIGH-level CAN bus line Ignition switch OFF* 6 k Ω or higher CANL (14) - BAT (16) LOW-level CAN bus line Ignition switch OFF* 6 k Ω or higher |