Toyota RAV4 manuals

Toyota Sienna Service Manual: Short to GND in Rear Curtain Shield Squib RH Circuit

DTC B1632/81 Short to GND in Rear Curtain Shield Squib RH Circuit

DESCRIPTION

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

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

DTC B1632/81 is recorded when a short to ground is detected in the rear curtain shield squib RH circuit.

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

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

CHECK CURTAIN SHIELD AIRBAG ASSEMBLY RH

  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 RH.
  4.  Connect the white wire side of SST (resistance 2.1 Ω) to the floor wire No. 2.

    CAUTION: Never connect a tester to the curtain shield airbag assembly RH (Rear curtain shield squib RH) 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 B1632/81 is not output.

HINT: Codes other than DTC B1632/81 may be output at this time, but they are not related to this check.

REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH

2 CHECK FLOOR WIRE NO.2 (REAR CURTAIN SHIELD SQUIB RH CIRCUIT)

CHECK FLOOR WIRE NO.2 (REAR CURTAIN SHIELD SQUIB RH 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 No. 2.
  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 RH 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 B1632/81 is not output.

HINT: Codes other than DTC B1632/81 may be output at this time, but they are not related to this check.

USE SIMULATION METHOD TO CHECK

Open in Rear Curtain Shield Squib RH Circuit
DTC B1631/84 Open in Rear Curtain Shield Squib RH Circuit DESCRIPTION The rear curtain shield squib RH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly ...

Short to B+ in Rear Curtain Shield Squib RH Circuit
DTC B1633/82 Short to B+ in Rear Curtain Shield Squib RH Circuit DESCRIPTION The rear curtain shield squib RH circuit consists of the center airbag sensor assembly and the curtain shield airbag ...

Other materials:

Installation
1. INSTALL OCCUPANT CLASSIFICATION ECU  Check that the ignition switch is off.  Check that the negative battery (-) terminal is disconnected. CAUTION: After disconnecting the negative battery terminal, wait for at least 90 seconds before starting the operation. &nbs ...

Installation
HINT:  Use the same procedures for the RH side and LH side.  The procedures listed below are for the LH side. 1. INSTALL REAR AIRBAG SENSOR LH  Check that the ignition switch is off.  Check that the battery negative (-) terminal is disconnected. CAUTION: ...

Disassembly
1. REMOVE RH SEAT REAR SEAT RECLINING COVER  Remove the 2 screws.  Remove the RH seat rear seat reclining cover by pulling it out in the arrow mark direction shown in the illustration. 2. REMOVE LH SEAT REAR SEAT RECLINING COVER  Remove the 2 screws.  R ...

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