What are the Possible Causes of the DTC B1656 Toyota?
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
Faulty Front Seat Inner Belt Left (LH)
Front Seat Inner Belt Left harness is open or shorted
Front Seat Inner Belt Left circuit poor electrical connection
Faulty Center Airbag Sensor Assembly
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How to Fix the DTC B1656 Toyota?
Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1656 Toyota code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
What are Code Possible Symptoms?
Air Bag Warning Light ON
Code B1656 Toyota Description
The Seat Belt Buckle Switch Left circuit consists of the Center Airbag Sensor and the Front Seat Inner Belt Left (LH). The Diagnostic Trouble Code (DTC) B1655 is recorded when a malfunction is detected in the Seat Belt Buckle Switch Left.
B1656 Toyota Code - Seat Belt Buckle Switch Left Circuit Malfunction
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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