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Home >> Toyota >> 2013 >> Highlander SE, AWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes & Symptom Tests) (Except Hybrid) >> Airbag System >> DTC B1603/83: Front Satellite Sensor Bus RH Initialization Incomplete; DTC B1612/83: Lost Communication with Front Airbag Sensor RH; DTC B1613/83: Front Airbag Sensor RH Initialization Incomplete >> Procedure

DTC B1603/83: Front Satellite Sensor Bus RH Initialization Incomplete; DTC B1612/83: Lost Communication with Front Airbag Sensor RH; DTC B1613/83: Front Airbag Sensor RH Initialization Incomplete: Procedure

  1. CHECK CONNECTORS 
    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Check that the connectors are properly connected to the center airbag sensor assembly and front airbag sensor RH. Also check that the connectors that link the engine room main wire and instrument panel wire are properly connected.

      OK

      The connectors are properly connected.

      HINT: 

      If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the center airbag sensor assembly and front airbag sensor RH. Also disconnect the connectors that link the engine room main wire and instrument panel wire.
    5. Check that the terminals of the connectors are not damaged.

      OK

      The terminals are not deformed or damaged.

    NG → REPLACE WIRE HARNESS 

    OK: Go to next step 

  2. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (OPEN) 
    1. Connect the connectors that link the engine room main wire and instrument panel wire.
      Fig 1: Identifying Front Airbag Sensor RH Circuit (OPEN)
      GTY176712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using SST, connect terminals 29 (+SR) and 27 (-SR) of connector B.
      NOTE:

      Do not forcibly insert SST into the terminals of the connector when connecting.

      • SST: 09843-18040 
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A33-2 (+SR) - A33-1 (-SR) Always Below 1 Ω

    NG → See step   7 

    OK: Go to next step 

  3. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT) 
    1. Disconnect SST from connector B.
      Fig 2: Identifying Front Airbag Sensor RH Circuit (Short To B+)
      GTY204277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A33-2 (+SR) - A33-1 (-SR) Always 1 MΩ or higher

    NG → See step   8 

    OK: Go to next step 

  4. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO B+) 
    1. Connect the cable to the negative (-) battery terminal.
      Fig 3: Identifying Front Airbag Sensor RH Circuit (Short To B+)
      GTY204277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A33-2 (+SR) - Body ground Ignition switch on (IG) Below 1 V
      A33-1 (-SR) - Body ground Ignition switch on (IG) Below 1 V

    NG → See step   9 

    OK: Go to next step 

  5. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO GROUND) 
    1. Turn the ignition switch off.
      Fig 4: Identifying Front Airbag Sensor RH Circuit (Short To B+)
      GTY204277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A33-2 (+SR) - Body ground Always 1 MΩ or higher
      A33-1 (-SR) - Body ground Always 1 MΩ or higher

    NG → See step   10 

    OK: Go to next step 

  6. CHECK FRONT AIRBAG SENSOR RH 
    1. Connect the connector to the center airbag sensor assembly.
      Fig 5: Identifying Front Airbag Sensor LH
      GTY295144Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Interchange the front airbag sensor LH with the front airbag sensor RH and connect the connectors to them.
    3. Connect the cable to the negative (-) battery terminal.
    4. Turn the ignition switch on (IG), and wait for at least 60 seconds.
    5. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR .
    6. Turn the ignition switch off.
    7. Turn the ignition switch on (IG), and wait for at least 60 seconds.
    8. Check for DTCs. Refer to DTC CHECK / CLEAR .

      Result

      Result Proceed to
      DTCs B1603/83, B1612/83, B1613/83, B1608/84, B1617/84 and B1618/84 are not output. A
      DTC B1608/84, B1617/84 or B1618/84 is output. B
      DTC B1603/83, B1612/83 or B1613/83 is output. C

      HINT: 

      Codes other than DTCs B1603/83, B1612/83, B1613/83, B1608/84, B1617/84 and B1618/84 may be output at this time, but they are not related to this check.

    B → See step   13 

    C → See step   12 

    A → See step   11 

  7. CHECK INSTRUMENT PANEL WIRE (OPEN) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.
      Fig 6: Identifying Instrument Panel Wire (Open)
      GTY302017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      SST has already been inserted into connector B.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      AD12-1 (+SR) - AD12-2 (-SR) Always Below 1 Ω

    NG → REPLACE INSTRUMENT PANEL WIRE 

    OK → REPLACE ENGINE ROOM MAIN WIRE 

  8. CHECK INSTRUMENT PANEL WIRE (SHORT) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.
      Fig 7: Identifying Instrument Panel Wire Short
      GTY298115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      AD12-1 (+SR) - AD12-2 (-SR) Always 1 MΩ or higher

    NG → REPLACE INSTRUMENT PANEL WIRE 

    OK → REPLACE ENGINE ROOM MAIN WIRE 

  9. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) 
    1. Turn the ignition switch off.
      Fig 8: Identifying Instrument Panel Wire Short
      GTY298115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Disconnect the instrument panel wire connector from the engine room main wire.
    4. Connect the cable to the negative (-) battery terminal.
    5. Turn the ignition switch on (IG).
    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      AD12-1 (+SR) - Body ground Ignition switch on (IG) Below 1 V
      AD12-2 (-SR) - Body ground Ignition switch on (IG) Below 1 V

    NG → REPLACE INSTRUMENT PANEL WIRE 

    OK → REPLACE ENGINE ROOM MAIN WIRE 

  10. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.
      Fig 9: Identifying Instrument Panel Wire Short
      GTY298115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      AD12-1 (+SR) - Body ground Always 1 MΩ or higher
      AD12-2 (-SR) - Body ground Always 1 MΩ or higher

    NG → REPLACE INSTRUMENT PANEL WIRE 

    OK → REPLACE ENGINE ROOM MAIN WIRE 

  11. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  12. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL 
  13. REPLACE FRONT AIRBAG SENSOR RH. Refer to  REMOVAL 
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