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DI-338
                                               DIAGNOSTICS       -   SUPPLEMENTAL RESTRAINT SYSTEM
                                                                                                                     DI7IA-01




    DTC          B1135/24 Half Connection in Airbag Sensor Assembly
                          Connector

CIRCUIT DESCRIPTION
The airbag sensor assembly detects partial connection of connector.
For details of the function of each component, see OPERATION on page RS-2 .
DTC B1135/24 is recorded when the airbag sensor assembly detects an open in the electrical connection
check mechanism of the airbag sensor connector or in the airbag sensor circuit.
    DTC No.                     DTC Detecting Condition                                           Trouble Area
               S Malfunction of electrical connection check mechanism of
                                                                           S Electrical connection check mechanism
    B1135/24     airbag sensor assembly connector
                                                                           S Airbag sensor assembly
               S Airbag sensor assembly malfunction




2002 ECHO (RM884U)

                                                                             Author :                   Date :         508
                                                                                                 DI-339
                                    DIAGNOSTICS   -   SUPPLEMENTAL RESTRAINT SYSTEM

INSPECTION PROCEDURE

  1     Are connector of center airbag sensor assembly properly connected?


                                           NG         Connect connectors.


  OK



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




  3     Check airbag sensor assembly.

                                         PREPARATION:
          ON                             (a) Connect the connectors to the airbag sensor assembly.
                                         (b) Connect negative (-) terminal cable to the battery, and
                                               wait at least for 2 seconds.
                         Airbag          CHECK:
                         Sensor          (a) Turn the ignition switch to LOCK, and wait at least for 20
                         Assembly
                                               seconds.
                                         (b) Turn the ignition switch to ON, and wait at least for 20 se-
                                               conds.
                                         (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.
                     DTC B1135/24        (e) Turn the ignition switch to ON, and wait at least for 20 se-
      DLC3                                     conds.
                                         (f)   Check the DTC (See page DI-239 ).
                                         OK:
                                               DTC B1135/24 is not output.
 CG          Tc                          HINT:
                                H15222   Codes other than code B1135/24 may be output at this time, but
                                         they are not relevant to this check.

                                           NG         Go to the next step.


  OK



 From the results of the 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 :              509
DI-340
                                    DIAGNOSTICS   -   SUPPLEMENTAL RESTRAINT SYSTEM



   4     Check disconnection detection pin in the center airbag sensor assembly
         connector.

                                          CHECK:
                                          With 3 connectors connected to the sensor assembly, place
                                          tester leads onto any 2 of 3 disconnection detection pins and
                                          check for continuity.
                                          OK:
                                                Continuity




                                 H14983




                                            NG        Go to the next step.


  OK



  From the results of the 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 :            510
                                                                                            DI-341
                                   DIAGNOSTICS   -   SUPPLEMENTAL RESTRAINT SYSTEM



  5     Perform a visual check of the disconnection detection pin.

                                        OK:
                                        No deformation is identified.
                                        HINT:
                                        Compare it with the other 2 connector pins.




                               H15243




                                          NG         Repair or replace airbag sensor assembly
                                                     connector.


  OK



 Replace airbag sensor assembly.




2002 ECHO (RM884U)

                                                           Author :           Date :            511



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