Hazard Warning Switch Inspection

WARNING: This page is about a different car, the 2017 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .)
Remove the passenger-side decoration panel. (See DECORATION PANEL REMOVAL/INSTALLATION .)
Verify that the continuity between the hazard warning switch terminals is as indicated in the table.

Fig 1: Checking Continuity Between Hazard Warning Switch Terminals
Courtesy of MAZDA MOTORS CORP.

Fig 2: Hazard Warning Switch Terminals Continuity Chart
Courtesy of MAZDA MOTORS CORP.
- If the continuity is as indicated in the table, go to the next step.
- If not as indicated in the table, replace the hazard warning switch. (See HAZARD WARNING SWITCH REMOVAL/INSTALLATION .)
Apply battery voltage to hazard warning switch terminal A, and connect terminal B to ground.

Fig 3: Applying Battery Voltage To Hazard Warning Switch Terminal A
Courtesy of MAZDA MOTORS CORP.
Verify that the LED illuminates.
- If the LED does not illuminate, replace the hazard warning switch. (See HAZARD WARNING SWITCH REMOVAL/INSTALLATION .)