Dtc B1815/54 Short In Front Passenger Side Squib 2Nd Step Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FRONT PASSENGER AIRBAG ASSEMBLY (FRONT PASSENGER SIDE SQUIB 2ND STEP)

CHECK CONNECTOR

CHECK FRONT PASSENGER SIDE SQUIB 2ND STEP CIRCUIT

CHECK CENTER AIRBAG SENSOR ASSEMBLY

CHECK INSTRUMENT PANEL WIRE

CHECK INSTRUMENT PANEL WIRE ASSEMBLY

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

1. Perform the simulation method by selecting the "check mode" (signal check) with the intelligent tester (Click here).
   
2. After selecting the "check mode" (signal check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road (Click here).
   

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 connectors from the front passenger airbag assembly.
   

4. Connect the white wire side of SST (resistance 2.1 Ω) to connector "E" (black connector).
   

   CAUTION:

   Never connect a tester to the front passenger airbag assembly (Front passenger side squib 2nd step) for measurement, as the may lead to a serious injury due to airbag deployment.

   NOTICE:

   1. Do not forcibly insert the SST into the terminals of the connector when connecting.
      
   2. Insert straight the SST into the terminals of the connector.
      

SST

09843-18060

5. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
   

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

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

8. Turn the engine switch off.
   

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

10. Check the DTCs (Click here).
    

    OK:

    DTC B1815, B1816, B1817, B1818 or 54 is not output.
    

    HINT:

    Codes other than DTC B1815, B1816, B1817, B1818 and 54 may be output at this time, but they are not related to this check.

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 SST from connector "E".
   

4. Check that the instrument panel wire assembly connectors (on the front passenger airbag assembly side) are not damaged.
   

   OK:

   The lock button is not disengaged, or the claw of the lock is not damaged or deformed.
   

1. Disconnect the connectors from the center airbag sensor assembly.
   

2. Check the short to B+ in the circuit.
   

   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.
      

      Voltage:

      Tester connection	Condition	Specified condition
      K1-2 (P2+) - Body ground	Engine switch on (IG)	Below 1 V
      K1-1 (P2-) - Body ground	Engine switch on (IG)	Below 1 V

3. Check the open in the circuit.
   

   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.
      

      Resistance:

      Tester connection	Condition	Specified condition
      K1-2 (P2+) - K1-1 (P2-)	Always	Below 1 Ω

4. Check the short to ground in the circuit.
   

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

      Resistance:

      Tester connection	Condition	Specified condition
      K1-2 (P2+) - Body ground	Always	1 MΩ or higher
      K1-1 (P2-) - Body ground	Always	1 MΩ or higher

5. Check the short in the circuit.
   

   1. Release the activation prevention mechanism built into connector "B" (Click here).
      

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

      Resistance:

      Tester connection	Condition	Specified condition
      K1-2 (P2+) - K1-1 (P2-)	Always	1 MΩ or higher

1. Connect the connectors to the front passenger airbag assembly and the center airbag sensor assembly.
   

2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
   

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

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

5. Turn the engine switch off.
   

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

7. Check the DTCs (Click here).
   

   OK:

   DTC B1815, B1816, B1817, B1818 or 54 is not output.
   

   HINT:

   Codes other than DTC B1815, B1816, B1817, B1818 and 54 may be output at this time, but they are not related to this check.

1. Check the short to B+ in the circuit.
   

   1. Restore the released activation prevention mechanism of connector "B" to the original condition.
      

   2. Disconnect the instrument panel wire connector from the instrument panel wire assembly.
      

   3. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
      

   4. Turn the engine switch on (IG).
      

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

      Voltage:

      Tester connection	Condition	Specified condition
      LK1-3 (P2+) - Body ground	Engine switch on (IG)	Below 1 V
      LK1-4 (P2-) - Body ground	Engine switch on (IG)	Below 1 V

2. Check the open in the circuit.
   

   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.
      

      Resistance:

      Tester connection	Condition	Specified condition
      LK1-3 (P2+) - LK1-4 (P2-)	Always	Below 1 Ω

3. Check the short to ground in the circuit.
   

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

      Resistance:

      Tester connection	Condition	Specified condition
      LK1-3 (P2+) - Body ground	Always	1 MΩ or higher
      LK1-4 (P2-) - Body ground	Always	1 MΩ or higher

4. Check the short in the circuit.
   

   1. Release the activation prevention mechanism built into connector "B" (Click here).
      

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

      Resistance:

      Tester connection	Condition	Specified condition
      LK1-3 (P2+) - LK1-4 (P2-)	Always	1 MΩ or higher

1. Check the short to B+ in the circuit.
   

   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.
      

      Voltage:

      Tester connection	Condition	Specified condition
      K1-2 (P2+) - Body ground	Engine switch on (IG)	Below 1 V
      K1-1 (P2-) - Body ground	Engine switch on (IG)	Below 1 V

2. Check the open in the circuit.
   

   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.
      

      Resistance:

      Tester connection	Condition	Specified condition
      K1-2 (P2+) - K1-1 (P2-)	Always	Below 1 Ω

3. Check the short to ground in the circuit.
   

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

      Resistance:

      Tester connection	Condition	Specified condition
      K1-2 (P2+) - Body ground	Always	1 MΩ or higher
      K1-1 (P2-) - Body ground	Always	1 MΩ or higher

4. Check the short in the circuit.
   

   1. Release the activation prevention mechanism built into the connector "D" (Click here).
      

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

      Resistance:

      Tester connection	Condition	Specified condition
      K1-2 (P2+) - K1-1 (P2-)	Always	1 MΩ or higher