Toyota RAV4 manuals

Toyota Sienna Service Manual: Open in Rear Curtain Shield Squib LH Circuit

DTC B1636/88 Open in Rear Curtain Shield Squib LH Circuit

DESCRIPTION

The rear curtain shield squib LH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly LH.

The circuit instructs the SRS to deploy when deployment conditions are met.

DTC B1636/88 is recorded when an open circuit is detected in the rear curtain shield squib LH circuit.

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

1 CHECK CURTAIN SHIELD AIRBAG ASSEMBLY LH (REAR CURTAIN SHIELD SQUIB LH)

CHECK CURTAIN SHIELD AIRBAG ASSEMBLY LH (REAR CURTAIN SHIELD SQUIB LH)

  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 curtain shield airbag assembly LH.
  4.  Connect the white wire side of SST (resistance 2.1 Ω) to the floor wire.

    CAUTION: Never connect a tester to the curtain shield airbag assembly LH (Rear curtain shield squib LH) for measurement, as this may lead to a serious injury due to airbag deployment.

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

    Insert the SST straight 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 ignition switch to the ON position, and wait for at least 60 seconds.
  7.  Clear the DTCs stored in memory.
  8.  Turn the ignition switch to the LOCK position.
  9.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  10.  Check the DTCs

OK: DTC B1636/88 is not output.

HINT: Codes other than DTC B1636/88 may be output at this time, but they are not related to this check.

REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY LH

2 CHECK FLOOR WIRE (REAR CURTAIN SHIELD SQUIB LH CIRCUIT)

CHECK FLOOR WIRE (REAR CURTAIN SHIELD SQUIB LH CIRCUIT)

  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 SST (resistance 2.1 Ω) from the floor wire.
  4.  Disconnect the connector from the center airbag sensor assembly.
  5.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

3 CHECK CENTER AIRBAG SENSOR ASSEMBLY

CHECK CENTER AIRBAG SENSOR ASSEMBLY

  1. Connect the connectors to the curtain shield airbag assembly LH 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 ignition switch to the ON position, and wait for at least 60 seconds.
  4.  Clear the DTCs stored in memory.
  5.  Turn the ignition switch to the LOCK position.
  6.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  7.  Check the DTCs.

OK: DTC B1636/88 is not output.

HINT: Codes other than DTC B1636/88 may be output at this time, but they are not related to this check.

USE SIMULATION METHOD TO CHECK

Short in Rear Curtain Shield Squib LH Circuit
DTC B1635/87 Short in Rear Curtain Shield Squib LH Circuit DESCRIPTION The rear curtain shield squib LH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembl ...

Short to GND in Rear Curtain Shield Squib LH Circuit
DTC B1637/85 Short to GND in Rear Curtain Shield Squib LH Circuit DESCRIPTION The rear curtain shield squib LH circuit consists of the center airbag sensor assembly and the curtain shield airbag ...

Other materials:

Removal
1. REMOVE REAR WHEEL 2. REMOVE SKID CONTROL SENSOR WIRE (for 2WD) (a) Disconnect the skid control sensor connector. (b) Remove the bolt and disconnect the bracket from the rear axle beam assembly. HINT: Separate the RH side by the same procedures as the LH side. 3. SEPARATE SPEED SENSO ...

Terminals of ECU
1. CHECK TRANSPONDER KEY AMPLIFIER Disconnect the I14 amplifier connector and measure the resistance between the terminal of the wire harness side connector and body ground. If the result is not as specified, there may be a malfunction on the wire harness side.  Reconnec ...

Deleting the contact data
For PBAP compatible Bluetooth® phones, this function is available when “Automatic Transfer” is set to off. Select “Delete Contacts”. Select the desired contact and select “Delete”. Select “Yes” when the confirmation screen appears. Deleting the contact in a different w ...

© 2011-2022 Copyright www.tsienna.net