Canada - Restraints - SRS Service Tips

Bulletin
TSB2721

Issue Date
February 7, 2007

Market
Canada

Title
REPAIR MANUAL SUPPLEMENT: SUPPLEMENTAL RESTRAINT

Component
ELECTRICAL

Models
'04 - '07 All Toyota

INTRODUCTION:

To ensure customer satisfaction, please follow the SRS Service Tips below.

APPLICABLE VEHICLES:
- 2004 - 2007 model year Toyota vehicles equipped with the Curtain Shield Airbag.






WARRANTY INFORMATION:

SRS SERVICE TIPS:
- DTCs are the most important source of information when troubleshooting the SRS. Always inspect DTCs before disconnecting the battery.
- The SRS is equipped with a backup power source, so if work is started within 90 seconds after disconnecting the negative (--) terminal cable from the battery, the SRS may deploy.
- The center airbag sensor needs to be replaced anytime an airbag has deployed.
- When Troubleshooting SRS DTC B1650/32, check the Occupant Classification System (OCS) for DTCs before disconnecting the negative (--) terminal cable from the battery. B1650/32 is an indication the SRS system has detected errors in the OCS operation.
- Use a volt/ohmmeter with high impedance (10 kohms/V minimum) for troubleshooting the electrical circuits.
- Even in the case of a minor collision when the SRS does NOT deploy, the following parts should be inspected:
- Steering pad
- Front passenger airbag assembly
- Center airbag sensor assembly
- Front airbag sensor
- Front seat inner belt assembly
- Seat position sensor
- Front seat airbag assembly
- Side airbag sensor
- Curtain shield airbag assembly
- Rear airbag sensor
- Front seat outer belt assembly

- Before repair work, remove the center airbag sensor assembly if any kind of shock or movement is likely to occur to the airbag sensor during the repair.
- Using a hammer near an impact sensor could deploy an airbag.
- Movement of the center airbag sensor assembly could cause the curtain shield airbags to deploy.

- NEVER use SRS parts from another vehicle. When replacing parts, replace them with new components.