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Home / DTC / B1445 — FR curtain ABG active circuit OP

B1445 — FR curtain ABG active circuit OP

Detailed page for trouble code B1445.

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Code

B1445

MITSUBISHI B — Body

FR curtain ABG active circuit OP

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

Causes

  • Open or broken wiring in the FR curtain airbag circuit (chafing, pinched, disconnected).
  • Loose, corroded or pushed-out connector at the airbag, sensor, or SRS control module.
  • Failed curtain airbag igniter/squib (open winding).
  • Poor crimp or terminal damage in pigtail/connector.
  • Recent collision damage or improper repair/installation (trim removed, connectors disturbed).
  • Faulty SRS control module or internal connector failure.

Symptoms

  • SRS/airbag warning light illuminated on instrument cluster.
  • Possible disablement of affected airbag deployment (SRS system reports fault).
  • DTC B1445 stored in SRS control module; may be accompanied by other SRS codes.

What to check

  • Visual inspection of FR curtain airbag connector(s), wiring harness routing along A-pillar/headliner and door frame.
  • Check for signs of corrosion, bent pins, pushed-out terminals, or recent repair marks.
  • Scan SRS control module for stored codes and freeze-frame data and note any related codes.
  • Confirm whether the vehicle has a deployment history (previous crash) or recent interior work that may have disturbed connectors.

Signal parameters

  • Circuit continuity between SRS control module pin and FR curtain airbag connector pin (expect closed/low-resistance when intact).
  • Resistance of the FR curtain airbag squib compared to manufacturer specification (squib resistance should be within spec; an open indicates a failed squib).
  • Presence/absence of diagnostic line continuity signals or reference voltages at SRS connector per factory data (use scan tool to view SRS live data).
  • DTC status bits (open vs short detection) from SRS control module.

Diagnostic algorithm

  1. Read and record all SRS codes with a suitable diagnostic tool; clear codes and see if B1445 returns to confirm repeatability.
  2. Observe and record any additional SRS codes; check freeze-frame and live data for clues to when the fault occurred.
  3. Follow vehicle manufacturer SRS safety procedures before touching airbag connectors (disable battery and wait the specified time).
  4. Perform a careful visual inspection of the FR curtain airbag connector at the headliner/A-pillar for disconnected, corroded, or damaged pins and wiring.
  5. Unplug and inspect mating faces of connectors for bent pins, pushed-out terminals, corrosion or foreign material; repair or replace damaged connectors.
  6. Check continuity between the SRS control module pin and the FR curtain airbag connector pin. If open, trace wiring along the harness for damage, chafe points, or breaks and repair as needed.
  7. Measure the resistance of the curtain airbag squib and compare to the manufacturer's specification; if open or out-of-spec, replace the curtain airbag assembly.
  8. If wiring and airbag appear OK but fault remains, inspect/repair grounds and power supply circuits to the SRS module and consider module connector issues.
  9. If all wiring and the squib check good, consult manufacturer procedures for SRS control module testing or replacement and perform factory-recommended module programming/configuration after repair.
  10. After repair, clear codes and perform a road or system check per manufacturer to confirm the SRS warning light remains off and no codes return.

Likely causes

  • Disconnected or loose connector at the FR curtain airbag (most common).
  • Broken/stepped on wiring in A-pillar/headliner area (wiring harness damage).
  • Open/failed curtain airbag squib.

Fault status

⚠️ Status
Front-right curtain airbag active circuit open — SRS control module has detected an open circuit in the FR curtain airbag wiring or squib. Airbag system requires inspection and repair.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1440 B1441 B1442 B1443 B1444 B1446
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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Code

B1445

Other B — Body

Door Handle Switch Circuit Short To Ground

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

Causes

  • Open or broken wiring in the FR curtain airbag circuit (chafing, pinched, disconnected).
  • Loose, corroded or pushed-out connector at the airbag, sensor, or SRS control module.
  • Failed curtain airbag igniter/squib (open winding).
  • Poor crimp or terminal damage in pigtail/connector.
  • Recent collision damage or improper repair/installation (trim removed, connectors disturbed).
  • Faulty SRS control module or internal connector failure.

Symptoms

  • SRS/airbag warning light illuminated on instrument cluster.
  • Possible disablement of affected airbag deployment (SRS system reports fault).
  • DTC B1445 stored in SRS control module; may be accompanied by other SRS codes.

What to check

  • Visual inspection of FR curtain airbag connector(s), wiring harness routing along A-pillar/headliner and door frame.
  • Check for signs of corrosion, bent pins, pushed-out terminals, or recent repair marks.
  • Scan SRS control module for stored codes and freeze-frame data and note any related codes.
  • Confirm whether the vehicle has a deployment history (previous crash) or recent interior work that may have disturbed connectors.

Signal parameters

  • Circuit continuity between SRS control module pin and FR curtain airbag connector pin (expect closed/low-resistance when intact).
  • Resistance of the FR curtain airbag squib compared to manufacturer specification (squib resistance should be within spec; an open indicates a failed squib).
  • Presence/absence of diagnostic line continuity signals or reference voltages at SRS connector per factory data (use scan tool to view SRS live data).
  • DTC status bits (open vs short detection) from SRS control module.

Diagnostic algorithm

  1. Read and record all SRS codes with a suitable diagnostic tool; clear codes and see if B1445 returns to confirm repeatability.
  2. Observe and record any additional SRS codes; check freeze-frame and live data for clues to when the fault occurred.
  3. Follow vehicle manufacturer SRS safety procedures before touching airbag connectors (disable battery and wait the specified time).
  4. Perform a careful visual inspection of the FR curtain airbag connector at the headliner/A-pillar for disconnected, corroded, or damaged pins and wiring.
  5. Unplug and inspect mating faces of connectors for bent pins, pushed-out terminals, corrosion or foreign material; repair or replace damaged connectors.
  6. Check continuity between the SRS control module pin and the FR curtain airbag connector pin. If open, trace wiring along the harness for damage, chafe points, or breaks and repair as needed.
  7. Measure the resistance of the curtain airbag squib and compare to the manufacturer's specification; if open or out-of-spec, replace the curtain airbag assembly.
  8. If wiring and airbag appear OK but fault remains, inspect/repair grounds and power supply circuits to the SRS module and consider module connector issues.
  9. If all wiring and the squib check good, consult manufacturer procedures for SRS control module testing or replacement and perform factory-recommended module programming/configuration after repair.
  10. After repair, clear codes and perform a road or system check per manufacturer to confirm the SRS warning light remains off and no codes return.

Likely causes

  • Disconnected or loose connector at the FR curtain airbag (most common).
  • Broken/stepped on wiring in A-pillar/headliner area (wiring harness damage).
  • Open/failed curtain airbag squib.

Fault status

⚠️ Status
Front-right curtain airbag active circuit open — SRS control module has detected an open circuit in the FR curtain airbag wiring or squib. Airbag system requires inspection and repair.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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