B00B0

Step 1: Inspect driver seat sensor connector under seat for corrosion, moisture, bent pins, or loose connections. Check for any aftermarket seat covers, cushions, or heavy objects that may interfere with sensor operation. Document any visible damage.

Step 2: Using a digital multimeter, measure resistance and continuity of the occupant classification sensor circuit from the seat connector to the control module connector per manufacturer specifications (typically 1-10k ohms depending on vehicle). Verify ground circuit integrity with less than 1 ohm resistance.

Step 3: With scan tool in live data mode, monitor occupant classification sensor voltage and status values while simulating different weight loads on the driver seat (empty, 50 lbs, 100 lbs, 150+ lbs). Compare readings to normal operating parameters to identify erratic or stuck sensor output.

Step 4: If sensor communication is normal but values are incorrect, attempt occupant classification sensor recalibration procedure using manufacturer-specific scan tool functions with seat completely empty and all objects removed.

Step 5: If recalibration fails or sensor data remains invalid, disconnect battery negative terminal, remove driver seat, and inspect sensor mat for physical damage, tears, or deformation. Check mounting points and ensure sensor is not pinched or compressed.

Step 6: After repairs or sensor replacement, perform final recalibration procedure, clear codes, conduct test drive, and verify airbag warning lamp is extinguished and occupant classification system operates correctly through all weight ranges.