Code
B1C2D
MITSUBISHI
B — Body
Right side ABG squib open
Views:
UK: 18
EN: 31
RU: 30
AI status
Completed
Completed
100%
Causes
- Open or disconnected squib connector (right side)
- Broken or chafed wiring in the squib circuit
- Corroded or contaminated connector terminals
- Previous deployment or damaged airbag module/squib
- Poor repair/crimp or aftermarket connector
- Faulty airbag control module or internal connector
Symptoms
- Illuminated SRS/airbag warning lamp
- DTC B1C2D stored in SRS module
- Right-side airbag (or pretensioner) disabled — may not deploy in a crash
- Possible related occupant classification or passenger airbag warnings
What to check
- Read and record all SRS codes and freeze-frame data with a capable scan tool
- Visually inspect right-side airbag connector(s), harness and nearby components for damage, corrosion, or disconnection
- Check for evidence of prior airbag deployment (deployed airbag module, cut wires, crash repairs)
- Inspect connector retention tangs and terminal condition
- Verify no aftermarket equipment or seat covers interfering with wiring
Signal parameters
- Typical squib resistance (intact pyrotechnic squib): low ohms, commonly ~2–5 Ω (manufacturer-specific)
- Open-circuit condition: infinite resistance / OL on DMM
- Short condition / short to chassis: very low resistance (near 0 Ω)
- SRS module expects low-resistance squib; consult service manual for exact thresholds and test methods
Diagnostic algorithm
- Obtain SRS trouble codes and freeze-frame data with a scan tool; record results
- Follow manufacturer safety procedure: disable vehicle battery and wait the prescribed time for the SRS capacitors to discharge before touching connectors or components
- Locate the right-side squib connector(s) — seat, seatback, or curtain area per model wiring diagram
- Perform visual inspection of connector, terminals and wiring for damage, corrosion, pin pull-out or poor crimps
- With battery still disabled and following service manual instructions, measure squib circuit resistance between the squib connector pins and compare to manufacturer spec (expect low ohms if good; OL indicates open)
- If open at connector, isolate location: backprobe at module connector to see if open is in harness or at squib (measure continuity from squib assembly to control unit harness connector)
- Repair or replace damaged wiring, terminals or connectors. Replace squib/airbag module if internal open or after deployment — only use original specified parts.
- After repairs, clear codes with a scan tool, reconnect battery per procedure, and verify no DTC returns and that SRS lamp extinguishes. If code persists, inspect/replace SRS control module as directed by manufacturer
Likely causes
- Right-side seat/curtain squib connector unplugged or loose after service
- Harness damage from seat adjustment, door hinge, or previous impact
- Water intrusion or corrosion at right-side connector
- Airbag module already deployed (open circuit)
- Poorly repaired harness splice with intermittent contact
Fault status
Status
Open circuit detected in right-side airbag (ABG) squib circuit. SRS control module has disabled the right-side squib. DTC B1C2D stored.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Repair manuals
Manual library for MITSUBISHI
203
Browse 203 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
MITSUBISHI
-
MITSUBISHI: 2024
-
Outlander PHEV
-
MITSUBISHI: 2023
-
Mirage
-
Mirage G4
-
Outlander PHEV
-
MITSUBISHI: 2022
-
MITSUBISHI: 2021
-
MITSUBISHI: 2020
-
Mirage G4
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email