Code
B0075
Generic
B — Body
Second Row Right Seat Belt Pretensioner Deployment Control
Views:
UK: 20
EN: 40
RU: 20
AI status
Completed
Completed
100%
Causes
- Open circuit (broken wire or unplugged connector) in the pretensioner squib circuit
- Short to ground or short to battery on the pretensioner wiring
- High resistance in connector or wiring (corrosion, bent pins, water intrusion)
- Failed pretensioner squib (internal break or short)
- SRS (airbag) control module fault or poor ground at module
- Previous deployment not replaced or improper repair after crash
Symptoms
- SRS / airbag warning lamp illuminated on dash
- Diagnostic trouble code B0075 stored in SRS control module
- Seat belt pretensioner for second row right may not deploy in a crash
- Possible disabled SRS functions or related restraint faults
What to check
- Read and record all SRS codes and freeze frame using a capable scan tool
- Check for deployment history/airbag deployment flag in module (previous crash)
- Visual inspection of the second-row right seat connectors, harness, and seat anchorage for damage, corrosion, or disconnected plugs
- Measure continuity/resistance of the pretensioner squib circuit at the squib connector and at the module connector
- Inspect and verify proper grounds for the SRS module and seat circuits
- Wiggle test wiring with connector connected while watching live data / resistance (carefully) for intermittent faults
Signal parameters
- Expected pretensioner squib resistance (intact): typically about 0.5–3.0 ohms (manufacturer-specific).
- Open circuit: very high / infinite ohms (no continuity).
- Short to ground / short to battery: near 0 ohms or significantly lower than spec.
- No sustained normal voltage should appear on the squib circuit except during deployment; module uses a high-current discharge during deployment — do not attempt to apply voltage.
- SRS module monitors circuit continuity and resistance thresholds; refer to OEM spec for exact ohm target and tolerance.
Diagnostic algorithm
- Read codes: Connect an SRS-capable scan tool, record B0075 and any related codes, and note freeze frame/deployment flags.
- Check history: Verify whether vehicle has prior airbag deployment or repair. If previous deployment occurred, confirm pretensioner replacement and proper airbag system repairs.
- Safety prep: Disable SRS power—disconnect battery negative and wait at least 2–3 minutes (follow vehicle manufacturer specified wait time) before touching airbag/pretensioner connectors.
- Inspect connectors: Locate the second-row right seat pretensioner connector (under seat or at base), disconnect, and inspect pins for corrosion, bent pins, or push-out.
- Measure squib resistance: With battery disconnected, measure resistance across the pretensioner squib terminals at the connector. Compare to manufacturer spec (typical 0.5–3.0 Ω). If open or out of spec, replace pretensioner.
- Check harness continuity: Measure continuity from the pretensioner connector back to the SRS module connector. Repair any opens, shorts, or high-resistance sections; pay attention to areas that flex (seat tracks, movable harness).
- Inspect for shorts: Check for short to ground or battery by measuring resistance to chassis ground and to battery positive (with battery disconnected).
- Repair/replace: Replace damaged wiring, connectors, or the pretensioner squib as required. If module wiring is damaged, repair per good wiring practice and OEM SRS guidelines.
- Reconnect and reset: Reconnect battery, clear codes with scan tool, and run SRS self-tests. Confirm the SRS lamp extinguishes and no new B0075 reappears.
- Final verification: If available, command a system lamp test or run live data diagnostics per OEM procedures. If fault persists after repairs, evaluate SRS control module for proper operation (replacement only per OEM procedures).
- Note: Always follow manufacturer SRS safety procedures when handling pretensioners; do not attempt to fire or bench-test squibs with external voltage.
Likely causes
- Open or corroded connector at the second-row right seat pretensioner
- Damaged wiring in the seat harness where it flexes or is routed
- Failed pretensioner squib (requires replacement)
- Previous crash/repair left pretensioner disconnected or not replaced
Fault status
Status
SRS control module detected abnormal condition in Second Row Right seat belt pretensioner deployment control circuit (open/short/high resistance or prior deployment).
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
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Code
B0075
HUMMER
B — Body
Supplemental Deployment Loop #1 Short to Ground/Voltage Out of Range
Views:
UK: 8
EN: 22
RU: 12
AI status
Completed
Completed
100%
Causes
- Open circuit (broken wire or unplugged connector) in the pretensioner squib circuit
- Short to ground or short to battery on the pretensioner wiring
- High resistance in connector or wiring (corrosion, bent pins, water intrusion)
- Failed pretensioner squib (internal break or short)
- SRS (airbag) control module fault or poor ground at module
- Previous deployment not replaced or improper repair after crash
Symptoms
- SRS / airbag warning lamp illuminated on dash
- Diagnostic trouble code B0075 stored in SRS control module
- Seat belt pretensioner for second row right may not deploy in a crash
- Possible disabled SRS functions or related restraint faults
What to check
- Read and record all SRS codes and freeze frame using a capable scan tool
- Check for deployment history/airbag deployment flag in module (previous crash)
- Visual inspection of the second-row right seat connectors, harness, and seat anchorage for damage, corrosion, or disconnected plugs
- Measure continuity/resistance of the pretensioner squib circuit at the squib connector and at the module connector
- Inspect and verify proper grounds for the SRS module and seat circuits
- Wiggle test wiring with connector connected while watching live data / resistance (carefully) for intermittent faults
Signal parameters
- Expected pretensioner squib resistance (intact): typically about 0.5–3.0 ohms (manufacturer-specific).
- Open circuit: very high / infinite ohms (no continuity).
- Short to ground / short to battery: near 0 ohms or significantly lower than spec.
- No sustained normal voltage should appear on the squib circuit except during deployment; module uses a high-current discharge during deployment — do not attempt to apply voltage.
- SRS module monitors circuit continuity and resistance thresholds; refer to OEM spec for exact ohm target and tolerance.
Diagnostic algorithm
- Read codes: Connect an SRS-capable scan tool, record B0075 and any related codes, and note freeze frame/deployment flags.
- Check history: Verify whether vehicle has prior airbag deployment or repair. If previous deployment occurred, confirm pretensioner replacement and proper airbag system repairs.
- Safety prep: Disable SRS power—disconnect battery negative and wait at least 2–3 minutes (follow vehicle manufacturer specified wait time) before touching airbag/pretensioner connectors.
- Inspect connectors: Locate the second-row right seat pretensioner connector (under seat or at base), disconnect, and inspect pins for corrosion, bent pins, or push-out.
- Measure squib resistance: With battery disconnected, measure resistance across the pretensioner squib terminals at the connector. Compare to manufacturer spec (typical 0.5–3.0 Ω). If open or out of spec, replace pretensioner.
- Check harness continuity: Measure continuity from the pretensioner connector back to the SRS module connector. Repair any opens, shorts, or high-resistance sections; pay attention to areas that flex (seat tracks, movable harness).
- Inspect for shorts: Check for short to ground or battery by measuring resistance to chassis ground and to battery positive (with battery disconnected).
- Repair/replace: Replace damaged wiring, connectors, or the pretensioner squib as required. If module wiring is damaged, repair per good wiring practice and OEM SRS guidelines.
- Reconnect and reset: Reconnect battery, clear codes with scan tool, and run SRS self-tests. Confirm the SRS lamp extinguishes and no new B0075 reappears.
- Final verification: If available, command a system lamp test or run live data diagnostics per OEM procedures. If fault persists after repairs, evaluate SRS control module for proper operation (replacement only per OEM procedures).
- Note: Always follow manufacturer SRS safety procedures when handling pretensioners; do not attempt to fire or bench-test squibs with external voltage.
Likely causes
- Open or corroded connector at the second-row right seat pretensioner
- Damaged wiring in the seat harness where it flexes or is routed
- Failed pretensioner squib (requires replacement)
- Previous crash/repair left pretensioner disconnected or not replaced
Fault status
Status
SRS control module detected abnormal condition in Second Row Right seat belt pretensioner deployment control circuit (open/short/high resistance or prior deployment).
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
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Code
B0075
LAND ROVER
B — Body
second row, right seat belt pre-tensioner deployment control
Views:
UK: 9
EN: 25
RU: 9
AI status
Completed
Completed
100%
Causes
- Open circuit (broken wire or unplugged connector) in the pretensioner squib circuit
- Short to ground or short to battery on the pretensioner wiring
- High resistance in connector or wiring (corrosion, bent pins, water intrusion)
- Failed pretensioner squib (internal break or short)
- SRS (airbag) control module fault or poor ground at module
- Previous deployment not replaced or improper repair after crash
Symptoms
- SRS / airbag warning lamp illuminated on dash
- Diagnostic trouble code B0075 stored in SRS control module
- Seat belt pretensioner for second row right may not deploy in a crash
- Possible disabled SRS functions or related restraint faults
What to check
- Read and record all SRS codes and freeze frame using a capable scan tool
- Check for deployment history/airbag deployment flag in module (previous crash)
- Visual inspection of the second-row right seat connectors, harness, and seat anchorage for damage, corrosion, or disconnected plugs
- Measure continuity/resistance of the pretensioner squib circuit at the squib connector and at the module connector
- Inspect and verify proper grounds for the SRS module and seat circuits
- Wiggle test wiring with connector connected while watching live data / resistance (carefully) for intermittent faults
Signal parameters
- Expected pretensioner squib resistance (intact): typically about 0.5–3.0 ohms (manufacturer-specific).
- Open circuit: very high / infinite ohms (no continuity).
- Short to ground / short to battery: near 0 ohms or significantly lower than spec.
- No sustained normal voltage should appear on the squib circuit except during deployment; module uses a high-current discharge during deployment — do not attempt to apply voltage.
- SRS module monitors circuit continuity and resistance thresholds; refer to OEM spec for exact ohm target and tolerance.
Diagnostic algorithm
- Read codes: Connect an SRS-capable scan tool, record B0075 and any related codes, and note freeze frame/deployment flags.
- Check history: Verify whether vehicle has prior airbag deployment or repair. If previous deployment occurred, confirm pretensioner replacement and proper airbag system repairs.
- Safety prep: Disable SRS power—disconnect battery negative and wait at least 2–3 minutes (follow vehicle manufacturer specified wait time) before touching airbag/pretensioner connectors.
- Inspect connectors: Locate the second-row right seat pretensioner connector (under seat or at base), disconnect, and inspect pins for corrosion, bent pins, or push-out.
- Measure squib resistance: With battery disconnected, measure resistance across the pretensioner squib terminals at the connector. Compare to manufacturer spec (typical 0.5–3.0 Ω). If open or out of spec, replace pretensioner.
- Check harness continuity: Measure continuity from the pretensioner connector back to the SRS module connector. Repair any opens, shorts, or high-resistance sections; pay attention to areas that flex (seat tracks, movable harness).
- Inspect for shorts: Check for short to ground or battery by measuring resistance to chassis ground and to battery positive (with battery disconnected).
- Repair/replace: Replace damaged wiring, connectors, or the pretensioner squib as required. If module wiring is damaged, repair per good wiring practice and OEM SRS guidelines.
- Reconnect and reset: Reconnect battery, clear codes with scan tool, and run SRS self-tests. Confirm the SRS lamp extinguishes and no new B0075 reappears.
- Final verification: If available, command a system lamp test or run live data diagnostics per OEM procedures. If fault persists after repairs, evaluate SRS control module for proper operation (replacement only per OEM procedures).
- Note: Always follow manufacturer SRS safety procedures when handling pretensioners; do not attempt to fire or bench-test squibs with external voltage.
Likely causes
- Open or corroded connector at the second-row right seat pretensioner
- Damaged wiring in the seat harness where it flexes or is routed
- Failed pretensioner squib (requires replacement)
- Previous crash/repair left pretensioner disconnected or not replaced
Fault status
Status
SRS control module detected abnormal condition in Second Row Right seat belt pretensioner deployment control circuit (open/short/high resistance or prior deployment).
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
Similar codes
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Was this AI description helpful?
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