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Toyota Sienna Service Manual: Half Connection in Center Airbag Sensor Assembly Connectors

Toyota Sienna Service Manual / Supplemental restraint system / Airbag system / Diagnostic trouble code chart / Half Connection in Center Airbag Sensor Assembly Connectors

DTC B1135/24 Half Connection in Center Airbag Sensor Assembly Connectors

DESCRIPTION

The center airbag sensor assembly connector has a mechanism that electrically detects half connection.

The center airbag sensor assembly monitors the voltage applied to the disconnection detection pins and detects half connection.

DTC B1135/24 is recorded when the center airbag sensor assembly detects an open circuit in the electrical connection check mechanism of the airbag sensor connector or in the airbag sensor circuit.

DESCRIPTION

INSPECTION PROCEDURE

1 CHECK CENTER AIRBAG SENSOR ASSEMBLY CONNECTOR

  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3. Check the connection of the center airbag sensor assembly connectors.

OK: The connectors are connected.

HINT: When the connectors are not firmly connected, disconnect them once and reconnect them securely

2 CHECK CENTER AIRBAG SENSOR ASSEMBLY

 CHECK CENTER AIRBAG SENSOR ASSEMBLY

  1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  2.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  3.  Clear the DTCs stored in memory.
  4.  Turn the ignition switch to the LOCK position.
  5.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  6.  Check the DTCs.

OK: DTC B1135/24 is not output.

HINT: Codes other than code B1135/24 may be output at this time, but they are not related to this check.

END

3 PERFORM VISUAL CHECK OF DISCONNECTION DETECTION PIN

PERFORM VISUAL CHECK OF DISCONNECTION DETECTION PIN

  1. Turn the ignition switch to the LOCK position.
  2.  Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3.  Disconnect the connectors from the center airbag sensor assembly.
  4.  Check the disconnection detection pin of the connector.

HINT: Compare one connector with the other 2 connectors.

OK: No deformation is identified.

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

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DTC B1100/31 Center Airbag Sensor Assembly Malfunction DESCRIPTION The center airbag sensor assembly consists of the center airbag sensor assembly, safing sensor, drive circuit, diagnosis circuit ...

Side Airbag Sensor Assembly RH Circuit Malfunction
DTC B1140/32 Side Airbag Sensor Assembly RH Circuit Malfunction DESCRIPTION The side airbag sensor RH circuit consists of the center airbag sensor assembly and side airbag sensor RH. If the ce ...

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