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Home >> Lexus >> 2008 >> ES 350 >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Supplemental Restraint System) >> 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 >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC 
    1. Turn the engine switch on (IG), and wait for at least 60 seconds.
    2. Turn the engine switch off.

      HINT:

      If a communication error occurs, DTCs for both the LH and RH sides will be stored simultaneously. To identify the malfunctioning area, turn the engine switch off and then on (IG) again.

    3. Turn the engine switch on (IG), and wait for at least 60 seconds.
    4. Check the DTCs (See DTC CHECK/CLEAR  ).

      Result 

      RESULT REFERENCE CHART

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

      HINT:

      • DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the engine switch off and then on (IG) again.
      • Codes other than DTC B1603, B1613, or 83 and B1618/84 may be output at this time, but they are not related to this check.

    B: GO TO  DTC B1618/84  

    C: USE SIMULATION METHOD TO CHECK (See  DIAGNOSIS SYSTEM   ) 

    A: Go to Next Step 

  2. CHECK CONNECTION OF CONNECTORS 
    1. Turn the engine switch off.
    2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    3. Check that the connectors are properly connected to the center airbag sensor assembly and the front airbag sensor RH.

      OK: The connectors are properly connected. 

    NG: CONNECT CONNECTORS PROPERLY 

    OK: Go to Next Step 

  3. CHECK CONNECTORS 
    1. Disconnect the connectors from the center airbag sensor assembly and front airbag sensor RH.
    2. Check that the connectors (on the center airbag sensor assembly side and front airbag sensor RH side) are not damaged.

      OK: The connectors are not deformed or damaged. 

    NG: REPAIR OR REPLACE WIRE HARNESS 

    OK: Go to Next Step 

  4. CHECK VEHICLE CONDITION 
    1. Check whether or not the vehicle is equipped with the rear side airbag.

      Result: 

      A: with the rear side airbag 

      B: without the rear side airbag 

    B: Go to step  14

    A: Go to Next Step 

  5. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (OPEN) 
    1. Using a service wire, connect terminals 29 (+SR) and 27 (-SR) of connector B.
      NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A4-2 (+SR) - A4-1 (-SR) Always Below 1 Ω
    Fig 1: Checking Front Airbag Sensor RH Circuit (Open)
    G05251434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  10

    OK: Go to Next Step 

  6. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT) 
    1. Disconnect the service wire from connector B.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A4-2 (+SR) - A4-1 (-SR) Always 1 MΩ or higher
      3. Fig 2: Checking Front Airbag Sensor RH Circuit (Short)
      G05251435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  11

    OK: Go to Next Step 

  7. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO B+) 
    1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A4-2 (+SR) - Body ground Engine switch on (IG) Below 1 V
      A4-1 (-SR) - Body ground Engine switch on (IG) Below 1 V
    Fig 3: Checking Front Airbag Sensor RH Circuit (Short To B+)
    G05251435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  12

    OK: Go to Next Step 

  8. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO GROUND) 
    1. Turn the engine switch off.
    2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A4-2 (+SR) - Body ground Always 1 MΩ or higher
      A4-1 (-SR) - Body ground Always 1 MΩ or higher
    Fig 4: Checking Front Airbag Sensor RH Circuit (Short To Ground)
    G05251435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  13

    OK: Go to Next Step 

  9. CHECK FRONT AIRBAG SENSOR RH 
    1. Connect the connectors to the center airbag sensor assembly.
    2. Interchange the front airbag sensor LH with RH and connect the connectors to them.
    3. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    4. Turn the engine switch on (IG), and wait for at least 60 seconds.
    5. Clear the DTCs stored in the memory (See DTC CHECK/CLEAR  ).
    6. Turn the engine switch off.
    7. Turn the engine switch on (IG), and wait for at least 60 seconds.
    8. Check the DTCs (See DTC CHECK/CLEAR  ).

      Result 

      RESULT REFERENCE CHART

      Result Proceed to
      DTC B1603, B1612, B1613, or 83 is output. A
      DTC B1608, B1617, B1618, or 84 is output. B
      DTC B1603, B1612, B1613, or 83 and B1608, B1617, B1618, or 84 are not output. C
      Fig 5: Checking Front Airbag Sensor RH
      G05251438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

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

    A: REPLACE CENTER AIRBAG SENSOR ASSEMBLY (See  REMOVAL   ) 

    B: REPLACE FRONT AIRBAG SENSOR RH (See  REMOVAL   ) 

    C: USE SIMULATION METHOD TO CHECK (See  DIAGNOSIS SYSTEM   ) 

  10. CHECK INSTRUMENT PANEL WIRE (OPEN) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.

      HINT:

      The service wire has already been inserted into connector B.

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

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      AE4-2 (+SR) - AE4-1 (-SR) Always Below 1 Ω
    Fig 6: Checking Instrument Panel Wire (Open)
    G05251439Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPAIR OR REPLACE ENGINE ROOM MAIN WIRE 

  11. CHECK INSTRUMENT PANEL WIRE (SHORT) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      AE4-2 (+SR) - AE4-1 (-SR) Always 1 MΩ or higher
    Fig 7: Checking Instrument Panel Wire (Short)
    G05251440Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPAIR OR REPLACE ENGINE ROOM MAIN WIRE 

  12. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) 
    1. Turn the engine switch off.
    2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    3. Disconnect the instrument panel wire connector from the engine room main wire.
    4. Connect the negative (-) terminal cable to battery, and wait for at least 2 seconds.
    5. Turn the engine switch on (IG).
    6. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      AE4-2 (+SR) - Body ground Engine switch on (IG) Below 1 V
      AE4-1 (-SR) - Body ground Engine switch on (IG) Below 1 V
    Fig 8: Checking Instrument Panel Wire (Short To B+)
    G05251440Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPAIR OR REPLACE ENGINE ROOM MAIN WIRE 

  13. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      AE4-2 (+SR) - Body ground Always 1 MΩ or higher
      AE4-1 (-SR) - Body ground Always 1 MΩ or higher
    Fig 9: Checking Instrument Panel Wire (Short To Ground)
    G05251440Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPAIR OR REPLACE ENGINE ROOM MAIN WIRE 

  14. CHECK FRONT AIRBAG SENSOR RH (OPEN) 
    1. Using a service wire, connect terminals 29 (+SR) and 27 (-SR) of connector B.
      NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A4-2 (+SR) - A4-1 (-SR) Always Below 1 Ω
    Fig 10: Checking Front Airbag Sensor RH (Open)
    G05251443Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  19

    OK: Go to Next Step 

  15. CHECK FRONT AIRBAG SENSOR RH (SHORT) 
    1. Disconnect the service wire from connector B.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A4-2 (+SR) - A4-1 (-SR) Always 1 MΩ or higher
    Fig 11: Checking Front Airbag Sensor RH (Short)
    G05251444Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  20

    OK: Go to Next Step 

  16. CHECK FRONT AIRBAG SENSOR RH (SHORT TO B+) 
    1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A4-2 (+SR) - Body ground Engine switch on (IG) Below 1 V
      A4-1 (-SR) - Body ground Engine switch on (IG) Below 1 V
    Fig 12: Checking Front Airbag Sensor Rh (Short To B+)
    G05251444Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  21

    OK: Go to Next Step 

  17. CHECK FRONT AIRBAG SENSOR RH (SHORT TO GROUND) 
    1. Turn the engine switch off.
    2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A4-2 (+SR) - Body ground Always 1 MΩ or higher
      A4-1 (-SR) - Body ground Always 1 MΩ or higher
    Fig 13: Checking Front Airbag Sensor RH (Short To Ground)
    G05251444Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  22

    OK: Go to Next Step 

  18. CHECK FRONT AIRBAG SENSOR RH 
    1. Connect the connectors to the center airbag sensor assembly.
    2. Interchange the front airbag sensor LH with RH and connect the connectors to them.
    3. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    4. Turn the engine switch on (IG), and wait for at least 60 seconds.
    5. Clear the DTCs stored in the memory (See DTC CHECK/CLEAR  ).
    6. Turn the engine switch off.
    7. Turn the engine switch on (IG), and wait for at least 60 seconds.
    8. Check the DTCs (See DTC CHECK/CLEAR  ).

      Result 

      RESULT REFERENCE CHART

      Result Proceed to
      DTC B1603, B1612, B1613, or 83 is output. A
      DTC B1608, B1617, B1618, or 84 is output. B
      DTC B1603, B1612, B1613, or 83 and B1608, B1617, B1618, or 84 are not output. C
      Fig 14: Checking Front Airbag Sensor RH
      G04979325Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

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

    A: REPLACE CENTER AIRBAG SENSOR ASSEMBLY (See  REMOVAL   ) 

    B: REPLACE FRONT AIRBAG SENSOR RH (See  REMOVAL   ) 

    C: USE SIMULATION METHOD TO CHECK (See  DIAGNOSIS SYSTEM   ) 

  19. CHECK INSTRUMENT PANEL WIRE (OPEN) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.

      HINT:

      The service wire has already been inserted into connector B.

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

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      AE4-2 (+SR) - AE4-1 (-SR) Always Below 1 Ω
    Fig 15: Checking Instrument Panel Wire (Open)
    G05251448Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPAIR OR REPLACE ENGINE ROOM MAIN WIRE 

  20. CHECK INSTRUMENT PANEL WIRE (SHORT) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      AE4-2 (+SR) - AE4-1 (-SR) Always 1 MΩ or higher
    Fig 16: Checking Instrument Panel Wire (Short)
    G04979327Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPAIR OR REPLACE ENGINE ROOM MAIN WIRE 

  21. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) 
    1. Turn the engine switch off.
    2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    3. Disconnect the instrument panel wire connector from the engine room main wire.
    4. Connect the negative (-) terminal cable to battery, and wait for at least 2 seconds.
    5. Turn the engine switch on (IG).
    6. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      AE4-2 (+SR) - Body ground Engine switch on (IG) Below 1 V
      AE4-1 (-SR) - Body ground Engine switch on (IG) Below 1 V
    Fig 17: Checking Instrument Panel Wire (Short)
    G04979327Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPAIR OR REPLACE ENGINE ROOM MAIN WIRE 

  22. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) 
    1. Disconnect the instrument panel wire connector from the engine room main wire.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      AE4-2 (+SR) - Body ground Always 1 MΩ or higher
      AE4-1 (-SR) - Body ground Always 1 MΩ or higher
    Fig 18: Checking Instrument Panel Wire (Short To Ground)
    G05251451Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE 

    OK: REPAIR OR REPLACE ENGINE ROOM MAIN WIRE 

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