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                                                                                                                   DI-297
                                                 DIAGNOSTICS     -   SUPPLEMENTAL RESTRAINT SYSTEM
                                                                                                                    DI1NG-18




  DTC                 B0115/47                       Short in Side Squib (LH) Circuit

CIRCUIT DESCRIPTION
The side squib (LH) circuit consists of the airbag sensor assembly and side airbag assembly (LH).
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-2 .
DTC B0115/47 is recorded when a short is detected in the side squib (LH) circuit.
    DTC No.                      DTC Detecting Condition                                          Trouble Area
                 S Short circuit between SFL+ wire harness and SFL- wire
                                                                           S Side airbag assembly (LH)
                   harness of squib
    B0115/47                                                               S Airbag sensor assembly
                 S Side squib (LH) malfunction
                                                                           S Wire harness
                 S Airbag sensor assembly malfunction


WIRING DIAGRAM




                                                                                          Airbag Sensor Assembly




                 S7
                 Side Squib (LH)

                                                                                   5
                                             1                Y-R                 C3      SFL+
                                                              (*1)


                                                                                   6
                                             2                Y-G
                                                                                  C3      SFL-
                                                              (*1)




*1 : w/ Side Airbag                                                                                                 H01454




2002 ECHO (RM884U)

                                                                            Author :                     Date :     467
DI-298
                                             DIAGNOSTICS   -   SUPPLEMENTAL RESTRAINT SYSTEM

INSPECTION PROCEDURE

    1     Prepare for inspection (See step 1 on page DI-390 ).




    2     Check side squib (LH) circuit.

                                                 PREPARATION:
                                                 Release the airbag activation prevention mechanism of the
                           Airbag
                                                 connector (on the airbag sensor assembly side) between the
  Squib (LH)               Sensor
                           Assembly              airbag sensor assembly and the side airbag assembly (LH)
                                                 (See page DI-239 ).
                                                 CHECK:
                                                 For the connector (on the side airbag assembly side) between
                                                 the side airbag assembly (LH) and the airbag sensor assembly,
                                                 measure the resistance between SFL+ and SFL-.
                       SFL-           SFL+       OK:
                                                       Resistance: 1 M or Higher

               (-)   (+)                           NG          Repair or replace harness or connector be-
 H01019                                                        tween side airbag assembly (LH) and airbag
 W03859                                 H01191
                                                               sensor assembly.


   OK




2002 ECHO (RM884U)

                                                                     Author :            Date :          468
                                                                                                   DI-299
                                        DIAGNOSTICS   -   SUPPLEMENTAL RESTRAINT SYSTEM



   3       Check airbag sensor assembly.

                                            PREPARATION:
                      
                                            (a) Connect the connector to the airbag sensor assembly.
                      Airbag                (b) Connect the negative (-) terminal cable to the battery,
 Squib (LH)           Sensor                      and wait at least for 2 seconds.
                      Assembly              CHECK:
                                            (a) Turn the ignition switch to ON and wait at least for 20 se-
                                                  conds.
                                            (b) Clear the DTC stored in memory (See page DI-239 ).
                 ON
                                            (c) Turn the ignition switch to LOCK, and wait at least for 20
                                                  seconds.
                                            (d) Turn the ignition switch to ON and wait at least for 20 se-
                                                  conds.
          DLC3           DTC B0115/47       (e) Check the DTC (See page DI-239 ).
                                            OK:
                                                  DTC B0115/47 is not output.
                                            HINT:
       CG       Tc                          Codes other than code B0115/47 may be output at this time, but
H01017
                                            they are not relevant to this check.
AB0119
H10600 H01073                      H12852

                                               NG         Replace airbag sensor assembly.


  OK




2002 ECHO (RM884U)

                                                                Author :           Date :            469
DI-300
                                        DIAGNOSTICS   -   SUPPLEMENTAL RESTRAINT SYSTEM



    4      Check side squib (LH).

                                             PREPARATION:
Squib (LH)
                                             (a) Turn the ignition switch to LOCK.
                      Airbag                 (b) Disconnect the negative (-) terminal cable from the bat-
                      Sensor                       tery, and wait at least for 90 seconds.
                      Assembly               (c) Connect the side airbag assembly (LH) connector.
                                             (d) Connect the negative (-) terminal cable to the battery,
                                                   and wait at least for 2 seconds.
                 ON                          CHECK:
                                             (a) Turn the ignition switch to LOOK, and wait at least for 20
                                                   second.
                                             (b) Turn the ignition switch to ON and wait at least for 20 se-
                                                   conds.
         DLC3            DTC B0115/47        (c) Clear the DTC stored in memory (See page DI-239 ).
                                             (d) Turn the ignition switch to LOCK, and wait at least for 20
                                                   seconds.
                                             (e) Turn the ignition switch to ON and wait at least for 20 se-
     CG      Tc
                                                   conds.
 H01018                                      (f)   Check the DTC (See page DI-239 ).
 AB0119
 H10600 H01073                      H12853   OK:
                                                   DTC B0115/47 is not output.
                                             HINT:
                                             Codes other than code B0115/47 may be output at this time, but
                                             they are not relevant to this check.

                                               NG         Replace side airbag assembly (LH).


   OK



  From the results of the above inspection, the malfunctioning part can now be considered normal.
  To make sure of this, use the simulation method to check.




2002 ECHO (RM884U)

                                                                Author :            Date :             470



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