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B0087 BUICK

B0087 BUICK - Left Rear Side Impact Sensor

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Left Rear Side Impact Sensor
  • Left Rear Side Impact Sensor harness is open or shorted
  • Left Rear Side Impact Sensor circuit poor electrical connection
  • Faulty Sensing and Diagnostic Module (SDM)
  What does this mean?

Tech notes

DTC B0087 02: Left Rear Side Impact Sensor Short to Ground
DTC B0087 05: Left Rear Side Impact Sensor High Voltage/Open
DTC B0087 39: Left Rear Side Impact Sensor Internal Malfunction
DTC B0087 3A: Left Rear Side Impact Sensor Incorrect Component Installed
DTC B0087 71: Left Rear Side Impact Sensor Invalid Data
  What does this mean?

Possible symptoms

  • Air Bag Warning Light ON

B0087 Buick Description

The impact sensors are equipped on vehicles to supplement the Supplemental Inflatable Restraint (SIR) system performance. The impact sensors are electronic and are not part of the deployment loops, but instead provide inputs to the Sensing and Diagnostic Module (SDM). The impact sensors can assist in determining the severity of some frontal and side collisions. The SDM uses the input from the impact sensors to assist in determining the severity of a collision further supporting air bag deployment. If the SDM determines a deployment is warranted, the SDM will cause current to flow through the deployment loops deploying the air bags.
OBDII Code B0087 Buick - Left Rear Side Impact Sensor - AutoCodes.com

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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