B0016 BUICK - Left Roof Rail Deployment Loop Stage 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

Possible causes

  • Faulty Left Roof Rail Module
  • Left Roof Rail Module harness is open or shorted
  • Left Roof Rail Module circuit poor electrical connection
  • Faulty Sensing and Diagnostic Module (SDM)
  • Tech notes

    DTC B0016 01 Left Roof Rail Deployment Loop Stage 1 Short to Battery
    DTC B0016 02 Left Roof Rail Deployment Loop Stage 1 Short to Ground
    DTC B0016 04 Left Roof Rail Deployment Loop Stage 1 Open Circuit
    DTC B0016 0D Left Roof Rail Deployment Loop Stage 1 Resistance Above Threshold
    DTC B0016 0E Left Roof Rail Deployment Loop Stage 1 Resistance Below Threshold

    Possible symptoms

  • Air Bag Warning Light ON
  • B0016 Buick Description

    During a side or frontal crash of sufficient force the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy an inflatable restraint module. There are 2 shorting bars used within the module connector which will short together both high and low circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing.
    OBDII Code B0016 Buick - Left Roof Rail Deployment Loop Stage 1 - Engine-Codes.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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