Toyota RAV4 manuals

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

DTC B1167/85 Short to GND in Curtain Shield Squib LH Circuit

DESCRIPTION

The 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 B1167/85 is recorded when a short to ground is detected in the curtain shield squib LH circuit.

DTC No.

DTC Detecting Condition

Trouble Area

B1167/85

  • Short circuit in curtain shield squib LH wire harness (to ground)
  • Curtain shield squib LH malfunction
  • Center airbag sensor assembly malfunction
  • Curtain shield airbag assembly LH (Curtain Shield Squib LH)
  • Center airbag sensor assembly
  • Floor wire

INSPECTION PROCEDURE

HINT:

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

 CHECK CURTAIN SHIELD AIRBAG ASSEMBLY LH (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 (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 B1167/85 is not output.

HINT: Codes other than DTC B1167/85 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 (CURTAIN SHIELD SQUIB LH CIRCUIT)

CHECK FLOOR WIRE (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 B1167/85 is not output.

HINT: Codes other than code B1167/85 may be output at this time, but they are not related to this check.

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

USE SIMULATION METHOD TO CHECK

Open in Curtain Shield Squib LH Circuit
DTC B1166/88 Open in Curtain Shield Squib LH Circuit DESCRIPTION The curtain shield squib LH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly LH. Th ...

Short to B+ in Curtain Shield Squib LH Circuit
DTC B1168/86 Short to B+ in Curtain Shield Squib LH Circuit DESCRIPTION The curtain shield squib LH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly LH ...

Other materials:

Disassembly
1. REMOVE REAR NO. 2 SEAT COVER BEZEL  Remove the 3 screws.  Disengage the 3 claws and remove the rear No. 2 seat cover bezel. 2. REMOVE REAR SEAT RECLINING COVER RH  Remove the 2 screws.  Disengage the claw and remove the rear seat reclining cover RH. ...

Oxygen (A/F) Sensor Pumping Current Circuit
HINT: Although the DTC titles say oxygen sensor, these DTCs relate to the Air-Fuel Ratio (A/F) sensor. Sensor 1 refers to the sensor mounted in front of the Three-Way Catalytic Converter (TWC) and located near the engine assembly. DESCRIPTION Refer to DTC P2195 (See page ES-355 ...

General information
A large number of ECU controlled systems are used in the SIENNA. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ECU controlled system's c ...

В© 2011-2019 Copyright www.tsienna.net