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Home / DTC / B1493 — F ABG(2)PS squib short to BATT.

B1493 — F ABG(2)PS squib short to BATT.

Detailed page for trouble code B1493.

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Code

B1493

MITSUBISHI B — Body

F ABG(2)PS squib short to BATT.

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

Causes

  • Short to battery (B+) in squib wiring or connector
  • Faulty squib (airbag or seatbelt pretensioner) with internal short
  • Corroded, damaged or bridged connector terminals
  • Poor repair or incorrect replacement after previous deployment (improperly wired connector)
  • Faulty SRS/airbag control module or internal driver fault
  • Aftermarket accessories or wiring contacting the squib harness

Symptoms

  • SRS/Airbag warning lamp illuminated on dash
  • Possible disablement of the passenger airbag/pretensioner system
  • Related SRS fault codes stored in airbag control module
  • No obvious behavior while driving (system fault only)

What to check

  • Use an OBD scan tool with SRS capability and read/record the full freeze frame and related SRS codes
  • Visually inspect passenger-side airbag/pretensioner connectors, seat wiring harness, and routing for damage, pinching or corrosion
  • Inspect under-seat area for aftermarket wiring or accessories contacting the harness
  • Confirm whether vehicle has had prior airbag deployment or repairs
  • Follow manufacturer SRS service procedure to disable the system before any hands-on testing

Signal parameters

  • Expected squib circuit resistance: very low (typically under a few ohms) for intact squib; an open circuit indicates broken wiring or disconnected squib
  • Measured resistance to battery positive should be high/infinite when disconnected (no continuity). Continuity to B+ indicates short to battery
  • Diagnostic tool should report short-to-B+ status in live data for the affected circuit

Diagnostic algorithm

  1. Record codes and vehicle history with a scanner that supports Mitsubishi SRS functions
  2. Follow the manufacturer’s SRS disable procedure (disconnect negative battery and wait the specified time or use diagnostic service plug; observe all ESD and safety precautions)
  3. Visually inspect passenger-side airbag/pretensioner connector and wiring for damage, corrosion and improper repairs; repair as necessary
  4. With SRS disabled per OEM procedure, disconnect the passenger squib connector at the module/seat and measure resistance across the squib connector. Compare to manufacturer spec (if available).
  5. If resistance is within spec for the squib, perform continuity checks from the squib connector to battery positive to locate the short. Repair wiring insulation, chafing points, or misplaced aftermarket wires.
  6. If squib measures shorted or has anomalous resistance, replace the squib (airbag or pretensioner) per manufacturer procedures. Never attempt to repair an airbag squib.
  7. After repairs, reconnect and clear codes with the scan tool, re-enable SRS per OEM instructions, and verify the fault does not return. If code persists, suspect control module fault and refer to module diagnosis or replacement.

Likely causes

  • Damaged insulation or pinched harness contacting B+ power source near the passenger seat
  • Corroded connector allowing conductive path to battery voltage
  • Failed passenger-side squib (internal short) following impact or moisture ingress
  • Incorrectly reconnected harness after seat/airbag work

Fault status

⚠️ Status
F ABG(2)PS squib short to BATT — passenger-side squib circuit detected a short to battery (B+).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5-3.0 hours

Similar codes

B1490 B1491 B1492 B1494 B1793
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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