Code
B1480
MITSUBISHI
B — Body
F ABG(2)DR squib short
Views:
UK: 12
EN: 10
RU: 7
AI status
Completed
Completed
100%
Causes
- Shorted squib wiring (chafed, pinched, or damaged insulation).
- Corroded or loose connector contacts at the airbag squib.
- Damaged or failed airbag squib/inflator assembly.
- Water intrusion or contamination in connectors or harness areas.
- Incorrect or poor previous repair (improper splices, aftermarket accessories).
- Faulty SRS (airbag) control module or internal driver circuit.
Symptoms
- SRS/AIRBAG warning lamp illuminated on instrument cluster.
- Stored B1480 (and possibly related SRS codes) in SRS control module memory.
- Passenger or driver airbag inhibited (warning or indicator).
- Possible additional SRS warnings (seatbelt pretensioner faults) depending on wiring routing.
What to check
- Read and record all SRS-related DTCs and freeze-frame data with a capable scan tool.
- Verify battery voltage is stable; some tests require battery support.
- Visual inspection of wiring and connectors for chafing, damage, corrosion, or moisture at the airbag, junctions, doors, seats, and steering column.
- Inspect for recent repairs or aftermarket work in the vehicle that may affect SRS circuits.
- Check connector mating, retention tabs and pin condition at the squib and SRS module.
- Do not attempt resistance checks or connector probing without following vehicle-specific SRS safety procedures (disable battery and wait required time).
Signal parameters
- Typical squib circuit resistance (approximate): ~2–3 Ω per squib — consult factory service manual for exact spec.
- Open-circuit: very high resistance or OL (no continuity) indicates broken wire or disconnected squib.
- Short to ground or power: measured resistance near 0 Ω between squib circuit and vehicle ground or battery positive.
- If measuring at the SRS module, verify no deployment power present and follow safety procedures; SRS circuits normally show low resistance for intact squib.
Diagnostic algorithm
- Retrieve and record all SRS codes and freeze-frame data with an appropriate scan tool. Note any related codes.
- Follow the manufacturer's safety procedure: disable the 12V battery negative, wait the specified time for SRS capacitors to discharge before touching connectors or wiring.
- Visually inspect the squib connector, harness, and nearby wiring for damage, corrosion, water ingress, or pinched sections (doors, seats, steering column, under-dash).
- With SRS power disabled and using the service manual procedure, measure squib circuit resistance at the airbag connector and at the SRS module. Compare to factory spec. A very low resistance to ground or power indicates a short; open or very high resistance indicates an open circuit.
- Perform continuity tests between squib circuit pins and chassis ground and battery positive to check for unintended shorts. Wiggle the harness while monitoring to reproduce intermittent faults.
- If short is localized (e.g., in door harness), isolate and repair damaged section: replace or repair damaged wiring using proper insulation materials and SRS-approved splice methods per factory guidance.
- If wire and connector check good but resistance at squib is out of spec, replace the airbag/squib assembly per safety instructions.
- If wiring and squib test within spec, inspect SRS control module connectors and module. Replace or reprogram module only after confirming harness and squib integrity and following manufacturer procedures.
- After repairs, clear codes, re-enable SRS power, and verify no codes return and the SRS lamp behavior is normal. Perform any required post-repair checks (system calibrations) as specified by the manufacturer.
Likely causes
- Damaged wiring harness near door, seat, or steering column causing short to ground/power.
- Contaminated/corroded connector at the squib or junction connector.
- Failed/shorted airbag squib (inflator/connector internal short).
- Faulty SRS control module or connector pins.
Fault status
Status
Airbag (ABG(2)) squib circuit short detected (short to power or ground) — SRS fault; airbag circuit disabled.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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