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Home / DTC / B1465 — FR preten.active circuit open

B1465 — FR preten.active circuit open

Detailed page for trouble code B1465.

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Code

B1465

MITSUBISHI B — Body

FR preten.active circuit open

Brand: MITSUBISHI
Type: B — Body
Views: UK: 14 EN: 24 RU: 22
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or broken wiring between FR pretensioner and SRS control module
  • Disconnected, corroded or damaged pretensioner connector (under seat)
  • Failed pretensioner squib (open internal circuit) or previously deployed pretensioner
  • Blown SRS fuse or poor ground in SRS circuit
  • Faulty SRS/airbag control module or internal connector fault
  • Poor crimp or pin backout in the harness connector

Symptoms

  • SRS / airbag warning lamp illuminated on instrument cluster
  • Seatbelt pretensioner may not deploy in a crash (reduced occupant restraint)
  • Possible related SRS codes for other squibs or circuits
  • Vehicle may fail safety inspection where SRS faults are checked

What to check

  • Read and record all SRS/airbag DTCs and freeze frame data with a capable scan tool
  • Visually inspect FR seatbelt pretensioner connector and harness under seat for damage, corrosion or disconnection
  • Verify SRS fuse(es) and grounding points for security and corrosion
  • Check for evidence of prior deployment (deployed sensors, cut wires, replaced components)
  • Measure continuity/resistance of pretensioner squib with battery disconnected and connector unplugged
  • Inspect airbag control module connector for bent or backed-out pins

Signal parameters

  • Expected continuity: low resistance across pretensioner squib (manufacturer spec — typically ~0.5–5 Ω; consult service manual)
  • Open-circuit: infinite/very high resistance
  • Voltage at SRS connector with ignition ON (diagnostic reference voltage present at module side — consult OEM values)
  • No short to battery or ground when measuring between squib and chassis ground

Diagnostic algorithm

  1. Use a compatible scan tool to read and record all SRS-related codes; clear codes and see if B1465 returns.
  2. Disable SRS power: disconnect battery negative and wait the manufacturer-specified time before working on SRS components.
  3. Visually inspect the FR pretensioner connector, wiring harness routing under the seat, and related clips for damage, corrosion, or disconnection.
  4. With battery disconnected, unplug the pretensioner connector and measure resistance across the squib terminals; compare to OEM spec. An open reading indicates a faulty pretensioner or broken conductor.
  5. Perform continuity check between the pretensioner connector and the airbag control module pins to locate a wiring break. Repair any open or damaged wires and secure connectors.
  6. Inspect and, if necessary, repair or replace corroded/bent pins in connectors. Check SRS fuse and ground connections.
  7. If wiring and connector are good but resistance is out of spec, replace the pretensioner assembly.
  8. If pretensioner and wiring test OK, suspect fault in SRS control module; consult detailed module diagnostics and software updates, and replace only if confirmed.
  9. After repairs, clear codes with a scan tool and perform SRS system checks per manufacturer procedures. Verify SRS lamp is extinguished and code does not return.

Likely causes

  • Seatbelt pretensioner connector pulled loose during seat removal or service
  • Wire chafed/rubbed through under the seat causing an open
  • Pretensioner deployed in prior accident (open circuit)
  • Connector corrosion from moisture or spilled liquids
  • Damaged or backed-out pin in the SRS module harness connector

Fault status

⚠️ Status
Front-right seatbelt pretensioner active circuit open — SRS control module detects no continuity in the FR pretensioner squib circuit. Pretensioner may be disabled until repair.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5–2.0 hours

Similar codes

B1460 B1461 B1462 B1463 B1464 B1466
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

B1465

Other B — Body

Wiper Brake/Run Relay Circuit Open

Brand: Other
Type: B — Body
Views: UK: 23 EN: 36 RU: 25
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or broken wiring between FR pretensioner and SRS control module
  • Disconnected, corroded or damaged pretensioner connector (under seat)
  • Failed pretensioner squib (open internal circuit) or previously deployed pretensioner
  • Blown SRS fuse or poor ground in SRS circuit
  • Faulty SRS/airbag control module or internal connector fault
  • Poor crimp or pin backout in the harness connector

Symptoms

  • SRS / airbag warning lamp illuminated on instrument cluster
  • Seatbelt pretensioner may not deploy in a crash (reduced occupant restraint)
  • Possible related SRS codes for other squibs or circuits
  • Vehicle may fail safety inspection where SRS faults are checked

What to check

  • Read and record all SRS/airbag DTCs and freeze frame data with a capable scan tool
  • Visually inspect FR seatbelt pretensioner connector and harness under seat for damage, corrosion or disconnection
  • Verify SRS fuse(es) and grounding points for security and corrosion
  • Check for evidence of prior deployment (deployed sensors, cut wires, replaced components)
  • Measure continuity/resistance of pretensioner squib with battery disconnected and connector unplugged
  • Inspect airbag control module connector for bent or backed-out pins

Signal parameters

  • Expected continuity: low resistance across pretensioner squib (manufacturer spec — typically ~0.5–5 Ω; consult service manual)
  • Open-circuit: infinite/very high resistance
  • Voltage at SRS connector with ignition ON (diagnostic reference voltage present at module side — consult OEM values)
  • No short to battery or ground when measuring between squib and chassis ground

Diagnostic algorithm

  1. Use a compatible scan tool to read and record all SRS-related codes; clear codes and see if B1465 returns.
  2. Disable SRS power: disconnect battery negative and wait the manufacturer-specified time before working on SRS components.
  3. Visually inspect the FR pretensioner connector, wiring harness routing under the seat, and related clips for damage, corrosion, or disconnection.
  4. With battery disconnected, unplug the pretensioner connector and measure resistance across the squib terminals; compare to OEM spec. An open reading indicates a faulty pretensioner or broken conductor.
  5. Perform continuity check between the pretensioner connector and the airbag control module pins to locate a wiring break. Repair any open or damaged wires and secure connectors.
  6. Inspect and, if necessary, repair or replace corroded/bent pins in connectors. Check SRS fuse and ground connections.
  7. If wiring and connector are good but resistance is out of spec, replace the pretensioner assembly.
  8. If pretensioner and wiring test OK, suspect fault in SRS control module; consult detailed module diagnostics and software updates, and replace only if confirmed.
  9. After repairs, clear codes with a scan tool and perform SRS system checks per manufacturer procedures. Verify SRS lamp is extinguished and code does not return.

Likely causes

  • Seatbelt pretensioner connector pulled loose during seat removal or service
  • Wire chafed/rubbed through under the seat causing an open
  • Pretensioner deployed in prior accident (open circuit)
  • Connector corrosion from moisture or spilled liquids
  • Damaged or backed-out pin in the SRS module harness connector

Fault status

⚠️ Status
Front-right seatbelt pretensioner active circuit open — SRS control module detects no continuity in the FR pretensioner squib circuit. Pretensioner may be disabled until repair.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5–2.0 hours

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B1460 B1461 B1462 B1463 B1464 B1466
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