Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Test C: Restraint Control Module Does Not Respond To Scan Tool
Turn ignition switch to LOCK position. Disable air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect Restraint Control Module (RCM) harness connector C276. Inspect connector for loose, damaged or corroded terminals. Repair connector as necessary. If connector is okay, measure resistance in Light Blue/White wire between terminal No. 5 at RCM harness connector C276 and terminal No. 7 at DLC. See Figure and Fig 1 . If resistance is 5 ohms or less, replace RCM. If resistance is greater than 5 ohms, repair open in Light Blue/White wire between RCM and DLC.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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