Code
B1122
HUMMER
B — Body
Driver Deployment Loop Resistance Low
Views:
UK: 4
EN: 14
RU: 6
AI status
Completed
Completed
100%
Causes
- Shorted driver airbag squib wiring (short to ground or B+)
- Corroded or damaged driver airbag connector
- Faulty or shorted airbag squib (driver airbag module)
- Damaged or worn steering column clock spring (spiral cable)
- Improper or damaged aftermarket installations (alarms, stereos) tapping SRS circuits
- Previous collision repair with improper wiring repair
Symptoms
- SRS / airbag warning lamp illuminated on dash
- Possible disablement of driver airbag deployment until repaired
- Stored DTC(s) related to driver airbag circuit
- Intermittent SRS lamp depending on steering wheel position or vibration
What to check
- Perform standard SRS safety: disable battery negative and wait required time per vehicle procedure before touching SRS components
- Scan for additional SRS codes and capture freeze-frame data
- Visual inspection of driver airbag connector, steering column harness, and clock spring for damage or corrosion
- Measure resistance of driver airbag squib with airbag module disconnected (follow vehicle service manual for connector location and safe procedure)
- Check continuity from squib positive/negative to chassis ground and chassis B+ for unintended shorts
- Inspect for aftermarket devices or recent repairs in steering column or dash area
Signal parameters
- Expected driver airbag squib resistance: typically a low but finite value (commonly ~2–5 ohms depending on model) — consult vehicle spec
- Low resistance condition: measured value significantly lower than specification (approaching 0–1 ohm) indicating a short
- Open circuit: very high/infinite resistance indicates open circuit (different DTC)
- SRS module monitors circuit voltage/resistance and flags low-resistance condition when below threshold
Diagnostic algorithm
- Safety first: disconnect negative battery terminal and wait the manufacturer-specified time for SRS capacitors to discharge before any connector work.
- Retrieve/record all SRS codes and freeze-frame data with a capable scan tool. Note any related codes.
- Visually inspect driver airbag connector (under steering wheel), wiring harness to the steering column, and clock spring for chafing, pinching, corrosion, or melted insulation.
- With battery still disconnected, disconnect the driver airbag module connector. Measure resistance across the squib terminals at the connector per service manual. Compare to factory specification.
- If resistance is lower than spec, check for short to ground or B+ by measuring continuity from each squib conductor to chassis ground and to vehicle power. Repair any shorts.
- If circuit wiring and connectors check okay, remove/inspect the clock spring. Perform bench resistance checks of the clock spring assembly if procedures/specs available.
- If wiring and clock spring are good, consider that the airbag squib itself may be shorted — replace the driver airbag module per safety procedures.
- Repair or replace the faulty component (repair wiring, clean/replace connectors, replace clock spring or airbag). Clear codes and perform SRS system checks and any required steering angle/airbag system initialization.
- Re-scan and test-drive as required to confirm the SRS lamp remains off and no related codes return.
Likely causes
- Shorted wiring or contaminated connector at the driver airbag harness
- Faulty clock spring causing a short in the steering wheel circuit
- Damaged/shorted driver airbag squib (module)
Fault status
Status
SRS control module detected abnormally low resistance in driver deployment (airbag) loop — possible short or faulty component in driver-side squib circuit.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
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Code
B1122
LAND ROVER
B — Body
Window isolation relay
Views:
UK: 5
EN: 14
RU: 7
AI status
Completed
Completed
100%
Causes
- Shorted driver airbag squib wiring (short to ground or B+)
- Corroded or damaged driver airbag connector
- Faulty or shorted airbag squib (driver airbag module)
- Damaged or worn steering column clock spring (spiral cable)
- Improper or damaged aftermarket installations (alarms, stereos) tapping SRS circuits
- Previous collision repair with improper wiring repair
Symptoms
- SRS / airbag warning lamp illuminated on dash
- Possible disablement of driver airbag deployment until repaired
- Stored DTC(s) related to driver airbag circuit
- Intermittent SRS lamp depending on steering wheel position or vibration
What to check
- Perform standard SRS safety: disable battery negative and wait required time per vehicle procedure before touching SRS components
- Scan for additional SRS codes and capture freeze-frame data
- Visual inspection of driver airbag connector, steering column harness, and clock spring for damage or corrosion
- Measure resistance of driver airbag squib with airbag module disconnected (follow vehicle service manual for connector location and safe procedure)
- Check continuity from squib positive/negative to chassis ground and chassis B+ for unintended shorts
- Inspect for aftermarket devices or recent repairs in steering column or dash area
Signal parameters
- Expected driver airbag squib resistance: typically a low but finite value (commonly ~2–5 ohms depending on model) — consult vehicle spec
- Low resistance condition: measured value significantly lower than specification (approaching 0–1 ohm) indicating a short
- Open circuit: very high/infinite resistance indicates open circuit (different DTC)
- SRS module monitors circuit voltage/resistance and flags low-resistance condition when below threshold
Diagnostic algorithm
- Safety first: disconnect negative battery terminal and wait the manufacturer-specified time for SRS capacitors to discharge before any connector work.
- Retrieve/record all SRS codes and freeze-frame data with a capable scan tool. Note any related codes.
- Visually inspect driver airbag connector (under steering wheel), wiring harness to the steering column, and clock spring for chafing, pinching, corrosion, or melted insulation.
- With battery still disconnected, disconnect the driver airbag module connector. Measure resistance across the squib terminals at the connector per service manual. Compare to factory specification.
- If resistance is lower than spec, check for short to ground or B+ by measuring continuity from each squib conductor to chassis ground and to vehicle power. Repair any shorts.
- If circuit wiring and connectors check okay, remove/inspect the clock spring. Perform bench resistance checks of the clock spring assembly if procedures/specs available.
- If wiring and clock spring are good, consider that the airbag squib itself may be shorted — replace the driver airbag module per safety procedures.
- Repair or replace the faulty component (repair wiring, clean/replace connectors, replace clock spring or airbag). Clear codes and perform SRS system checks and any required steering angle/airbag system initialization.
- Re-scan and test-drive as required to confirm the SRS lamp remains off and no related codes return.
Likely causes
- Shorted wiring or contaminated connector at the driver airbag harness
- Faulty clock spring causing a short in the steering wheel circuit
- Damaged/shorted driver airbag squib (module)
Fault status
Status
SRS control module detected abnormally low resistance in driver deployment (airbag) loop — possible short or faulty component in driver-side squib circuit.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop ManualLand Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop ManualLand Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop ManualYour experience will help others
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