B0059

Code

Generic B — Body

SRS airbag circuit resistance fault

Brand: Generic

Type: B — Body

Views: UK: 13 EN: 22 RU: 18

AI status

Completed

ready

Completed 100%

Page language: EN

Read and record all SRS/related codes and freeze-frame data with a capable scan tool
Verify battery voltage and stable power to control module
Visually inspect wiring, connectors, and harness routing to airbag modules, pretensioners, clockspring, occupant sensors and impact sensors
Check connector pin condition for corrosion, bent pins, or pushed‑out terminals (under seats and in steering column)
Inspect for evidence of previous deployment or non‑OEM replacement modules
Check module and chassis grounds for cleanliness and tightness

Typical airbag squib resistance (unpowered, at module or squib connector): approximately 2–5 ohms for many frontal squibs — verify OEM spec before replacing
Seat belt pretensioners often measure ~1–5 ohms depending on type
Open circuit: very high resistance or OL on meter; short to ground: near 0 ohms
SRS control modules usually flag resistance out of expected range (open or high resistance > several ohms above spec or low resistance ≈0Ω) — always compare to vehicle manufacturer values

Read and document all DTCs and freeze frame. Note any related B or U codes.
Before any repairs, follow safety procedure: disable SRS power — disconnect negative battery terminal and wait the manufacturer‑specified time (commonly several minutes).
Visually inspect related connectors (airbag modules, pretensioners, clockspring, occupant sensor) for corrosion, damage, or unseated terminals. Repair or reconnect as needed.
With battery still disconnected, isolate the suspect circuit. Disconnect the airbag/pretensioner connector(s) and measure resistance at the module harness connector to the SRS control module and/or to the squib. Compare to OEM spec (if unknown, typical frontal squib ~2–5 Ω).
Check continuity between harness pins and module; check for shorts to ground and to battery voltage.
If clockspring is suspected (driver airbag): inspect and measure continuity through clockspring; replace if intermittent or open.
Repair or replace damaged wiring or connectors. Replace any airbag or pretensioner that fails resistance/spec checks or that shows deployment history. Replace control module only after confirming wiring and components are good.
Reconnect battery, clear codes, and perform SRS self-test with scan tool. Verify no new codes and that SRS warning lamp extinguishes.
Safety notes: always follow vehicle manufacturer service manual for SRS procedures, replacement part handling, and disposal of deployed components.