Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
B001A:01 Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery
B001A:02 Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Ground
B001A:04 Driver Seat Belt Anchor Pretensioner Deployment Loop Open
B001A:0D Driver Seat Belt Anchor Pretensioner Deployment Loop High Resistance
B001A:0E Driver Seat Belt Anchor Pretensioner Deployment Loop Low Resistance
The cost to diagnose the B001A code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
The seat belt pretensioner (driver and passenger) consists of a housing, seat belt retractor (located in the B-pillar), seat belt anchor (located in the seat), seat belt webbing, an initiator, and a canister of gas-generating materials. The initiator is part of the seat belt pretensioner deployment loop. When the vehicle is involved in a collision of sufficient force, the Inflatable Restraint Sensing and Diagnostic Module (SDM) causes current to flow through the seat belt deployment loops to the initiator. Current passing through the initiator ignites the material in the canister producing a rapid generation of gas. The gas produced from this reaction deploys the seat belt pretensioners which removes all of the slack in the seat belts. Depending on the severity of the collision, the seat belt pretensioners may deploy without the frontal air bags deploying, or they will deploy immediately before the frontal air bags deploy. A shorting bar (if equipped) is located in the connector.
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