SEAT BELT WARNING SYSTEM TERMINALS OF ECU


  1. CHECK COMBINATION METER ASSEMBLY

    B006O3SE02

    1. Disconnect the G16 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
      G16-2 (IG+) - Body ground G - Body ground IG power supply Engine switch on (IG) → off 11 to 14 V → Below 1 V*1
      10.5 to 16 V → Below 1 V*2
      G16-1 (B) - Body ground P - Body ground Battery power supply Always 11 to 14 V
      G16-21 (ES) - Body ground BR - Body ground Ground Always Below 1 Ω

      • *1: w/o Stop and Start System

      • *2: w/ Stop and Start System

    3. Reconnect the G16 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
      G16-24 (PODS) - Body ground R - Body ground Occupant detection sensor signal Engine switch on (IG), occupant not in passenger seat → occupant in passenger seat 11 to 14 V → Below 1 V
      G16-30 (PBKL) - Body ground G - Body ground Front passenger seat belt buckle switch signal Engine switch on (IG), occupant in passenger seat, and tongue plate not inserted into passenger seat inner belt → tongue plate inserted Below 1 V → 11 to 14 V

  2. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND JUNCTION BLOCK ASSEMBLY LH

    B006N0YC06
    *A Main Body ECU (Multiplex Network Body ECU) with 2 connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    B006OZRC08
    *A Main Body ECU (Multiplex Network Body ECU) with 3 connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU) from the junction block assembly LH.

      Click here

    2. Reconnect the junction block assembly LH connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω
      A-30 (ACC) - Body ground - ACC power supply Engine switch on (ACC) → off 11 to 14 V → Below 1 V
      A-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-32 (IG) - Body ground - IG power supply Engine switch on (IG) → off 11 to 14 V → Below 1 V

    4. Install the main body ECU (multiplex network body ECU) to the junction block assembly LH.

      Click here

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      4D-31 - Body ground L - Body ground Driver seat belt buckle switch signal Engine switch on (IG), driver seat belt unfastened → fastened Below 1 V → 11 to 14 V