Caliber L4-2.4L (2009)
Hazard Warning Switch: Description and Operation
Hazard Warning Switch - Operation
OPERATION
The hazard switch features a push-push type latching push button. When the push button is in its latched (lowered) position the switch contacts are open,
and when the push button is in its unlatched (raised) position the switch contacts are closed.
The hazard switch receives a ground on one terminal and provides a ground signal output to the Totally Integrated Power Module (TIPM) ) whenever the
switch contacts are closed. The TIPM responds to this input by controlling a battery voltage output and the flash rate for each of the right and left turn
signal lamps, then sends an electronic hazard switch status message over the Controller Area Network (CAN) data bus to the Electro Mechanical
Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) to control the illumination and flash rate of the right and left turn signal
indicators, as well as to control the click rate of an electromechanical relay soldered onto the EMIC electronic circuit board that emulates the sound
emitted by a conventional hazard warning flasher.
The hazard switch as well as the hard wired inputs and outputs of the switch may be diagnosed using conventional diagnostic tools and procedures. Refer
to the appropriate wiring information.
