Grand Cherokee 2WD V6-3.7L (2008)
Hazard Warning Switch: Testing and Inspection
HAZARD SWITCH
WARNING: 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 upper instrument panel switch pod may be diagnosed using conventional diagnostic
tools and procedures. Refer to the appropriate wiring information.
1. Remove the center bezel along with the upper switch pod from the instrument panel. See: Body and Frame/Interior Moulding / Trim/Dashboard /
Instrument Panel/Service and Repair/Instrument Panel Center Bezel - Removal.
2. Using a multi-meter, test the continuity between the ground terminal and the hazard switch signal 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
(raised) position.
3. If the switch fails either of the continuity tests, replace the ineffective upper instrument panel switch pod as required.
