B2610

Code

HUMMER B — Body

Occupant Classification System (OCS) Performance — Passenger Seat

Brand: HUMMER

Type: B — Body

Views: UK: 13 EN: 24 RU: 14

AI status

Completed

ready

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Page language: EN

Causes

Damaged or faulty passenger seat occupant classification sensor (pressure mat or load cell)
Open, shorted, corroded, or loose wiring/connectors in the passenger seat OCS circuit
Water intrusion or contamination in the seat cushion or sensor area
Poor or missing ground or power supply to the OCS module or sensor
Aftermarket or non‑OEM seat covers, cushions, or repairs that change sensor readings
Incorrect or incomplete OCS calibration after seat service or module replacement

Symptoms

SRS/OCS warning lamp or message illuminated on dash
Passenger airbag disabled or status indicator shows unavailable
Passenger presence/occupant classification cannot be determined or fluctuates
Difficulties with passenger airbag enable/disable behavior (may not deploy or may be inhibited)
Possible diagnostic trouble codes stored in the SRS/OCS module related to passenger seat

What to check

Scan vehicle with a capable diagnostic tool; read and record DTCs and freeze frame data
Check for related SRS codes and recent history (after repairs, water intrusion, collisions)
Verify battery voltage is normal before testing (low voltage may affect sensors)
Visually inspect passenger seat area: cushions, covers, seams for signs of water, damage, or aftermarket covers
Inspect connectors and wiring harness from passenger seat to the OCS/SRS module for corrosion, pin damage, broken wires, or poor mating
Check for service bulletins or software updates related to OCS for the vehicle

Signal parameters

Occupant classification status messages (e.g., Empty/Child/Adult/Unknown) on OCS/SRS module data stream
Weight estimate or sensor mat raw value reported by the classifier (varies by vehicle)
Sensor mat/load cell output is typically a varying voltage or resistance proportional to load (0–5 V or variable resistance expected depending on system design)
Supply voltage to seat sensors and OCS module should be within vehicle nominal range (battery voltage ± system tolerances)
OCS module communicates occupant data over vehicle CAN or dedicated SRS bus; message frequency consistent with manufacturer spec

Diagnostic algorithm

Retrieve and document DTCs, freeze frame, and OCS live data with a dealer‑level or capable scan tool. Note when the code set and any recent events. 2) Verify vehicle battery voltage is stable and at nominal level. Recheck DTCs after stable voltage. 3) Visually inspect passenger seat, cushion cover, and foam for contamination, moisture, or aftermarket covers; remove cover if necessary to inspect mat. 4) Inspect and gently manipulate seat harness connectors (under seat and at module) while monitoring live data to identify intermittent opens/shorts. Repair or secure any broken wires or corroded pins. 5) Check power and ground circuits to the sensor and OCS module for proper continuity and voltage. Repair as needed. 6) Measure sensor mat or load cell output per service manual tests (resistance/voltage) and compare to manufacturer spec. Replace mat if out of spec or physically damaged. 7) If wiring and sensor check OK, consider replacing or reflashing OCS/seat module per service procedures. 8) After repairs, clear DTCs and perform OCS calibration/zeroing procedure exactly as specified by manufacturer. 9) Re-test with known weights or occupant and verify stable, correct occupant classification and that DTC does not return. 10) If problem persists, escalate to manufacturer technical support or follow specific TSB guidance.

Likely causes

Faulty passenger seat cushion sensor mat or its cable
Connector corrosion or loose pin at the seat harness/OCS module
Seat cover or foam damage changing sensor response
Failed OCS module or internal electronics
Missing/incorrect OCS calibration after seat removal or service

Fault status

⚠️ Status

OCS Performance Fault — Passenger Seat. Passenger occupant classification or its circuit out of specification; passenger airbag availability may be affected.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

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B2610 — Occupant Classification System (OCS) Performance — Passenger Seat