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.

DTC No.

DTC Detecting Condition

Trouble Area

B1636/88

  • Open circuit in ICL+ wire harness or ICL- wire harness of rear curtain shield squib LH
  • Rear curtain shield squib LH malfunction
  • Center airbag sensor assembly malfunction
  • Curtain shield airbag assembly LH (Rear curtain shield squib LH)
  • Center airbag sensor assembly
  • Floor wire

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

  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 (5).
  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 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.

Go to step 2

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

REPAIR OR REPLACE FLOOR WIRE

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).
  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 (5).

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 CENTER AIRBAG SENSOR ASSEMBLY

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:

Absence of Registration Unit/ No Response for Connection Check/ Last Mode Error/ No Response Against ON / OFF Command/ Mode Status Error/ Slave Reset
DESCRIPTION HINT:  *1: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage.  *2: If the power connector is disconnected after the engine starts, this code is stored after 180 seconds.  *3: If the ...

Removal
1. REMOVE REAR WHEEL 2. REMOVE TAIL EXHAUST PIPE ASSEMBLY (See page EX-8) 3. SEPARATE REAR SPEED SENSOR (a) Remove the bolt and the speed sensor from the axle carrier. NOTICE: Be careful not to damage the speed sensor Prevent foreign matter from adhering to the speed sensor. 4. REMO ...

Heated steering wheel/seat heaters
Heated steering wheel and seat heaters heat the side grips of the steering wheel and seats, respectively. WARNING Care should be taken to prevent injury if anyone in the following categories comes in contact with the steering wheel and seats when the heater is on: ...

В© 2011-2019 Copyright www.tsienna.net