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Home / DTC / B0030 — Right Front/Passenger Side Deployment Loop Short to Ground/Voltage Out of Range

B0030 — Right Front/Passenger Side Deployment Loop Short to Ground/Voltage Out of Range

Detailed page for trouble code B0030.

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Code

B0030

HUMMER B — Body

Right Front/Passenger Side Deployment Loop Short to Ground/Voltage Out of Range

Brand: HUMMER
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged or chafed wiring in the right front airbag harness
  • Corroded, loose or pushed-back connector at the right front airbag module
  • Short to ground or to vehicle voltage in the squib wires
  • Failed right front airbag inflator (squib) or internal short
  • Faulty airbag control module / restraint control module (RCM)
  • Previous deployment or improper repair (burned connector, incorrect splice)

Symptoms

  • Airbag warning lamp illuminated on dash
  • Possible multiple SRS/airbag-related DTCs stored
  • Passenger airbag may be disabled by the system
  • No other drivability symptoms (typically electrical fault only)

What to check

  • Read and record all SRS-related codes with a capable scan tool (note freeze frame if available)
  • Follow manufacturer SRS safety procedure: battery disconnect and required wait time before touching SRS components
  • Visual inspection of right front airbag, connector, and harness routing for damage, corrosion, or signs of previous deployment
  • Measure squib loop resistance at the airbag connector and at the RCM harness connector (compare to spec)
  • Check for continuity to ground from each squib terminal (should not show a short to chassis ground)
  • Inspect for aftermarket accessories or recent service that could have disturbed the harness

Signal parameters

  • Typical right front airbag squib resistance: about 1.5–5 ohms (manufacturer-specific; consult shop manual)
  • Short to ground signature: near 0 ohms between squib conductor and chassis ground
  • Open/High resistance (open circuit): very high resistance / infinite (often >1 kΩ)
  • Voltage at squib circuit with key on (do not apply power to squib): control module may supply a low reference; values are module-specific — use live data from scan tool

Diagnostic algorithm

  1. Read and record all SRS codes and freeze-frame data with a capable scan tool.
  2. Perform SRS safety procedure: disconnect battery negative and wait per manufacturer procedure before inspecting or disconnecting SRS connectors.
  3. Visually inspect right front airbag module, connector, and harness route for damage, corrosion, abrasion, or evidence of deployment or heat damage.
  4. With battery disconnected and following safety wait, unplug right front airbag connector and measure resistance across the squib terminals at the airbag harness connector. Compare to specification.
  5. Check for short to ground: measure continuity between each squib conductor and chassis ground. There should be no continuity (open).
  6. Inspect and backprobe the module harness connector at the RCM (with power off as required) and measure resistance/continuity between the RCM pins and the airbag connector to find breaks or shorts.
  7. If harness and connectors are good and resistance is within spec, suspect the airbag inflator (squib) or the RCM. Replace the failed component only after confirming with specifications.
  8. After repair, clear codes, reconnect battery, and perform SRS system self-check with scan tool. Verify code does not return and that the airbag lamp extinguishes.
  9. Note: Never attempt to power an airbag squib directly. Follow all manufacturer safety and diagnostic procedures for SRS work.

Likely causes

  • Chafed harness where the wiring passes through the fender/dash causing contact with chassis ground
  • Connector pins pushed out, corrosion, or water ingress at the passenger airbag connector
  • Squib internal short (more likely if harness and connector check good)
  • Incorrect wiring or aftermarket accessory damage in the right front area

Fault status

⚠️ Status
Right front (passenger-side) airbag circuit reports short to ground or voltage out of expected range. Airbag control module has disabled that deployment loop; inspection of wiring, connectors, and the inflator (squib) is required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

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