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.
Hazard Warning Switch Test
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
The hazard switch as well as the hard wired inputs and outputs of the instrument panel switch pod may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information.
-- Remove the center bezel and switch pod from the instrument panel as a unit. Refer to FOR ENGINES CJRA, CGUA AND CGVA - REMOVAL AND INSTALLATION .
-- Using a multi-meter, test the continuity between the ground terminal and the hazard switch sense terminal of the switch. There should be continuity when the hazard switch push button is in its latched (lowered) position, and no continuity when the push button is in its unlatched (flush) position.
-- If the switch fails either of the continuity tests, replace the ineffective instrument panel switch pod as required.
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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.