Code
B1455
MITSUBISHI
B — Body
FL curtain ABG active circuit OP
Views:
UK: 4
EN: 11
RU: 7
AI status
Completed
Completed
100%
Causes
- Damaged or broken wiring harness to FL curtain airbag squib
- Corroded, loose or disconnected connector at squib or airbag control module
- Failed curtain airbag squib (igniter) with open circuit
- Poor or crushed wiring from previous repairs or body damage
- Faulty airbag control module or internal connector fault
- Intermittent connector contact due to corrosion or contamination
Symptoms
- SRS / airbag warning lamp illuminated or flashing
- Possible related codes stored for curtain airbag or restraint system
- Vehicle may log a permanent airbag fault and disable affected airbag deployment logic
- No other drivability symptoms (electrical fault only)
What to check
- Use an OEM-capable scan tool to read SRS module fault codes and freeze-frame data
- Visually inspect the left front A-pillar/headliner area and connector for damage, corrosion, or loose pins
- Inspect wiring harness routing for pinches, chafing, or body damage from accidents or repairs
- With battery disconnected and manufacturer wait time observed, disconnect the curtain airbag connector and inspect pins
- Measure continuity and resistance of the squib circuit to the airbag control module using a digital multimeter
- Check for aftermarket accessories or previous repairs that may have modified or damaged the wiring
Signal parameters
- Curtain airbag squib resistance typically in the low ohms range (commonly around 2–5 Ω); open circuit = infinite/OL
- Continuity: low resistance between squib terminals and module connector expected; infinite indicates open
- No battery voltage on squib discharge terminals except during deployment; supply/communication voltages to the SRS module should be ~12 V (key on) — consult OEM data before backprobing
Diagnostic algorithm
- Safety first: disable the supplemental restraint system power before performing any inspection — disconnect battery negative and wait the manufacturer-specified time (commonly several minutes) to allow the system capacitor to discharge
- Scan the vehicle with a capable SRS scan tool, record codes and freeze-frame. Note any related codes.
- Visually inspect the front-left curtain airbag harness, connector and airbag module area for damage, corrosion, bent pins or evidence of previous repair/accident.
- With battery disconnected and system safe, unplug the curtain airbag connector and inspect/clean pins. Reconnect and recheck the code.
- Measure squib resistance at the airbag connector (with squib disconnected from module). Compare to OEM spec — an open (OL/infinite) indicates a failed squib or open harness. A very high or infinite reading points to wiring open; a low shorted reading would indicate a short.
- Perform continuity checks from the squib connector to the airbag control module connector to locate opens. Wiggle test harness while monitoring continuity to find intermittent faults.
- If wiring and connectors test good but resistance is out of spec, replace the curtain airbag squib. If squib replacement does not clear the open and wiring is confirmed good, suspect airbag control module fault and consult OEM procedures.
- After repairs, clear codes with the scan tool, perform system readiness checks and verify the SRS lamp extinguishes and no fault returns.
- Important: Follow manufacturer-specific SRS handling and replacement procedures. Do not attempt deployments or high-voltage tests. If unsure, refer to factory repair manual or qualified SRS technician.
Likely causes
- Open/broken conductor in the squib harness (most common)
- Disconnected or poorly seated squib connector
- Failed curtain airbag squib (failed open)
- Connector corrosion or pin damage at squib or module
- Less likely: airbag control module internal failure
Fault status
Status
Open circuit detected in front-left curtain airbag activation circuit. SRS control module has logged an open (no continuity) condition for the FL curtain squib circuit — airbag system fault present; inspection of wiring, connectors, and squib recommended.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1455
Other
B — Body
Wiper Washer Fluid Lamp Circuit Open
Views:
UK: 11
EN: 25
RU: 13
AI status
Completed
Completed
100%
Causes
- Damaged or broken wiring harness to FL curtain airbag squib
- Corroded, loose or disconnected connector at squib or airbag control module
- Failed curtain airbag squib (igniter) with open circuit
- Poor or crushed wiring from previous repairs or body damage
- Faulty airbag control module or internal connector fault
- Intermittent connector contact due to corrosion or contamination
Symptoms
- SRS / airbag warning lamp illuminated or flashing
- Possible related codes stored for curtain airbag or restraint system
- Vehicle may log a permanent airbag fault and disable affected airbag deployment logic
- No other drivability symptoms (electrical fault only)
What to check
- Use an OEM-capable scan tool to read SRS module fault codes and freeze-frame data
- Visually inspect the left front A-pillar/headliner area and connector for damage, corrosion, or loose pins
- Inspect wiring harness routing for pinches, chafing, or body damage from accidents or repairs
- With battery disconnected and manufacturer wait time observed, disconnect the curtain airbag connector and inspect pins
- Measure continuity and resistance of the squib circuit to the airbag control module using a digital multimeter
- Check for aftermarket accessories or previous repairs that may have modified or damaged the wiring
Signal parameters
- Curtain airbag squib resistance typically in the low ohms range (commonly around 2–5 Ω); open circuit = infinite/OL
- Continuity: low resistance between squib terminals and module connector expected; infinite indicates open
- No battery voltage on squib discharge terminals except during deployment; supply/communication voltages to the SRS module should be ~12 V (key on) — consult OEM data before backprobing
Diagnostic algorithm
- Safety first: disable the supplemental restraint system power before performing any inspection — disconnect battery negative and wait the manufacturer-specified time (commonly several minutes) to allow the system capacitor to discharge
- Scan the vehicle with a capable SRS scan tool, record codes and freeze-frame. Note any related codes.
- Visually inspect the front-left curtain airbag harness, connector and airbag module area for damage, corrosion, bent pins or evidence of previous repair/accident.
- With battery disconnected and system safe, unplug the curtain airbag connector and inspect/clean pins. Reconnect and recheck the code.
- Measure squib resistance at the airbag connector (with squib disconnected from module). Compare to OEM spec — an open (OL/infinite) indicates a failed squib or open harness. A very high or infinite reading points to wiring open; a low shorted reading would indicate a short.
- Perform continuity checks from the squib connector to the airbag control module connector to locate opens. Wiggle test harness while monitoring continuity to find intermittent faults.
- If wiring and connectors test good but resistance is out of spec, replace the curtain airbag squib. If squib replacement does not clear the open and wiring is confirmed good, suspect airbag control module fault and consult OEM procedures.
- After repairs, clear codes with the scan tool, perform system readiness checks and verify the SRS lamp extinguishes and no fault returns.
- Important: Follow manufacturer-specific SRS handling and replacement procedures. Do not attempt deployments or high-voltage tests. If unsure, refer to factory repair manual or qualified SRS technician.
Likely causes
- Open/broken conductor in the squib harness (most common)
- Disconnected or poorly seated squib connector
- Failed curtain airbag squib (failed open)
- Connector corrosion or pin damage at squib or module
- Less likely: airbag control module internal failure
Fault status
Status
Open circuit detected in front-left curtain airbag activation circuit. SRS control module has logged an open (no continuity) condition for the FL curtain squib circuit — airbag system fault present; inspection of wiring, connectors, and squib recommended.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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👍 Like
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Send to email