DTC    B1612/83    Lost Communication with Front Airbag Sensor RH

DTC    B1613/83    Front Airbag Sensor RH Initialization Incomplete

for Preparation Click here


DESCRIPTION

The front airbag sensor RH circuit consists of the airbag sensor assembly and front airbag sensor RH.
The front airbag sensor RH detects impacts to the vehicle and sends signals to the airbag sensor assembly to determine if the airbag should be deployed.
These DTCs are stored when a malfunction is detected in the front airbag sensor RH circuit.

DTC No.
DTC Detection Condition
Trouble Area
B1612/83
B1613/83
  1. The airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the front airbag sensor RH circuit.
  2. Front airbag sensor RH malfunction
  3. Airbag sensor assembly malfunction
  1. Instrument panel wire
  2. Engine room main wire
  3. Front airbag sensor RH
  4. Airbag sensor assembly

WIRING DIAGRAM


C145438E35


INSPECTION PROCEDURE

NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work (Click here).

1.CHECK CONNECTORS

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

  1. Check that the connectors are properly connected to the 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.

  1. Disconnect the connectors from the airbag sensor assembly and front airbag sensor RH. Also disconnect the connectors that link the engine room main wire and instrument panel wire.

  1. Check that the terminals of the connectors are not damaged.

    OK:
    The terminals are not deformed or damaged.



NG
REPLACE WIRE HARNESS
OK


2.CHECK FRONT AIRBAG SENSOR RH CIRCUIT (OPEN)


  1. Connect the connectors that link the engine room main wire and instrument panel wire.


    C190642E16

  1. Using SST, connect terminals 29 (+SR) and 27 (-SR) of connector B.

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

SST
09843-18040  

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A44-2 (+SR) - A44-1 (-SR)
    		Always
    		Below 1 Ω


    Text in Illustration 
    *1
    		Front Airbag Sensor RH
    		*2
    		Airbag Sensor Assembly
    *3
    		Connector B
    		*4
    		Connector E
    *a
    		Front view of wire harness connector
    (to Airbag Sensor Assembly)
    		*b
    		Front view of wire harness connector
    (to Front Airbag Sensor RH)



NG
Go to step 7
OK


3.CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT)


    C145444E39

  1. Disconnect SST from connector B.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A44-2 (+SR) - A44-1 (-SR)
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Front Airbag Sensor RH
    *2
    		Airbag Sensor Assembly
    *3
    		Connector E
    *a
    		Front view of wire harness connector
    (to Front Airbag Sensor RH)



NG
Go to step 8
OK


4.CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO B+)


    C145444E39

  1. Connect the cable to the negative (-) auxiliary battery terminal.

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A44-2 (+SR) - Body ground
    		Power switch on (IG)
    		Below 1 V
    A44-1 (-SR) - Body ground
    		Power switch on (IG)
    		Below 1 V

    Text in Illustration 
    *1
    		Front Airbag Sensor RH
    *2
    		Airbag Sensor Assembly
    *3
    		Connector E
    *a
    		Front view of wire harness connector
    (to Front Airbag Sensor RH)



NG
Go to step 9
OK


5.CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO GROUND)


    C145444E39

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A44-2 (+SR) - Body ground
    		Always
    		1 MΩ or higher
    A44-1 (-SR) - Body ground
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Front Airbag Sensor RH
    *2
    		Airbag Sensor Assembly
    *3
    		Connector E
    *a
    		Front view of wire harness connector
    (to Front Airbag Sensor RH)



NG
Go to step 10
OK


6.CHECK FRONT AIRBAG SENSOR RH


    C190643E03

  1. Connect the connector to the airbag sensor assembly.

  1. Interchange the front airbag sensor RH with LH and connect the connectors.

  1. Connect the cable to the negative (-) auxiliary battery terminal.

  1. Turn the power switch on (IG), and wait for at least 60 seconds.

  1. Clear the DTCs stored in memory (Click here).

  1. Turn the power switch off.

  1. Turn the power switch on (IG), and wait for at least 60 seconds.

  1. Check for DTCs (Click here).

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

    Text in Illustration 
    *1
    		Front Airbag Sensor LH
    *2
    		Airbag Sensor Assembly

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



B
REPLACE FRONT AIRBAG SENSOR RH (Click here)

C
REPLACE AIRBAG SENSOR ASSEMBLY (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)  

7.CHECK INSTRUMENT PANEL WIRE (OPEN)


  1. Disconnect the instrument panel wire connector from the engine room main wire.


    C190644E07

    HINT:
    SST has already been inserted into connector B.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    AH6-1 (+SR) - AH6-2 (-SR)
    		Always
    		Below 1 Ω


    Text in Illustration 
    *1
    		Front Airbag Sensor RH
    		*2
    		Airbag Sensor Assembly
    *3
    		Engine Room Main Wire
    		*4
    		Instrument Panel Wire
    *5
    		Connector B
    		*6
    		Connector C
    *a
    		Front view of wire harness connector
    (to Airbag Sensor Assembly)
    		*b
    		Front view of wire harness connector
    (to Engine Room Main Wire)



NG
REPLACE INSTRUMENT PANEL WIRE
OK

REPLACE ENGINE ROOM MAIN WIRE 

8.CHECK INSTRUMENT PANEL WIRE (SHORT)


    C210535E11

  1. Disconnect the instrument panel wire connector from the engine room main wire.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    AH6-1 (+SR) - AH6-2 (-SR)
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Front Airbag Sensor RH
    *2
    		Airbag Sensor Assembly
    *3
    		Engine Room Main Wire
    *4
    		Instrument Panel Wire
    *5
    		Connector C
    *a
    		Front view of wire harness connector
    (to Engine Room Main Wire)



NG
REPLACE INSTRUMENT PANEL WIRE
OK

REPLACE ENGINE ROOM MAIN WIRE 

9.CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)


    C210535E11

  1. Turn the power switch off.

  1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

  1. Disconnect the instrument panel wire connector from the engine room main wire.

  1. Connect the cable to the negative (-) auxiliary battery terminal.

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    AH6-1 (+SR) - Body ground
    		Power switch on (IG)
    		Below 1 V
    AH6-2 (-SR) - Body ground
    		Power switch on (IG)
    		Below 1 V

    Text in Illustration 
    *1
    		Front Airbag Sensor RH
    *2
    		Airbag Sensor Assembly
    *3
    		Engine Room Main Wire
    *4
    		Instrument Panel Wire
    *5
    		Connector C
    *a
    		Front view of wire harness connector
    (to Engine Room Main Wire)



NG
REPLACE INSTRUMENT PANEL WIRE
OK

REPLACE ENGINE ROOM MAIN WIRE 

10.CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)


    C210535E11

  1. Disconnect the instrument panel wire connector from the engine room main wire.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    AH6-1 (+SR) - Body ground
    		Always
    		1 MΩ or higher
    AH6-2 (-SR) - Body ground
    		Always
    		1 MΩ or higher

    Text in Illustration 
    *1
    		Front Airbag Sensor RH
    *2
    		Airbag Sensor Assembly
    *3
    		Engine Room Main Wire
    *4
    		Instrument Panel Wire
    *5
    		Connector C
    *a
    		Front view of wire harness connector
    (to Engine Room Main Wire)



NG
REPLACE INSTRUMENT PANEL WIRE
OK

REPLACE ENGINE ROOM MAIN WIRE