SEAT BELT WARNING SYSTEM TERMINALS OF ECU


  1. CHECK COMBINATION METER ASSEMBLY

    B0027UAN02

    1. Disconnect the G9 combination meter assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G9-22 (IG+) - Body ground Y - Body ground IG power supply Ignition switch ON 11 to 14 V*1
      Ignition switch ON 10.5 to 16 V*2
      Ignition switch off Below 1 V
      G9-21 (B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      G9-27 (EP) - Body ground W-B - Body ground Ground Always Below 1 Ω

      *1: w/o Stop and Start System

      *2: w/ Stop and Start System

    3. Reconnect the G9 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
      G10-3 (BKL) - Body ground LG - Body ground Driver side seat belt buckle switch signal Ignition switch ON, driver side seat belt fastened 11 to 14 V
      Ignition switch ON, driver side seat belt unfastened Below 1 V
      G10-4 (P/SB) - Body ground W - Body ground Front passenger side seat belt buckle switch signal Ignition switch ON, front passenger side seat belt fastened and front passenger seat occupied 11 to 14 V
      Ignition switch ON, front passenger side seat belt unfastened and front passenger seat occupied Below 1 V
      G10-5 (RLBT) - Body ground* P - Body ground Rear LH seat belt buckle switch signal Rear LH seat belt unfastened Below 1 V
      Rear LH seat belt fastened 11 to 14 V
      G10-6 (RCSB) - Body ground* R - Body ground Rear center seat belt buckle switch signal Rear center seat belt unfastened Below 1 V
      Rear center seat belt fastened 11 to 14 V
      G10-7 (RRBT) - Body ground* SB - Body ground Rear RH seat belt buckle switch signal Rear RH seat belt unfastened Below 1 V
      Rear RH seat belt fastened 11 to 14 V
      G10-22 (RRMT) - Body ground* SB - Body ground Rear RH seat belt warning light signal Ignition switch ON, Rear RH seat belt unfastened within 34 seconds after closing rear door Below 1 V
      Ignition switch ON, Rear RH seat belt fastened within 34 seconds after closing rear door 11 to 14 V
      G10-23 (RCMT) - Body ground* GR - Body ground Rear center seat belt warning light signal Ignition switch ON, Rear center seat belt unfastened within 34 seconds after closing rear door Below 1 V
      Ignition switch ON, Rear center seat belt fastened within 34 seconds after closing rear door 11 to 14 V
      G10-24 (RLMT) - Body ground* R - Body ground Rear LH seat belt warning light signal Ignition switch ON, Rear LH seat belt unfastened within 34 seconds after closing rear door Below 1 V
      Ignition switch ON, Rear LH seat belt fastened within 34 seconds after closing rear door 11 to 14 V
      G10-18 (RRCY) - Body ground* L - Body ground Rear door RH condition signal Rear door RH closed 11 to 14 V
      Rear door RH open Below 1 V
      G10-17 (RLCY) - Body ground* V - Body ground Rear door LH condition signal Rear door LH closed 11 to 14 V
      Rear door LH open Below 1 V

      *: w/ Rear Seat Belt Warning