Headlight Leveling Switch Inspection

WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable.
Remove the headlight leveling switch. (See HEADLIGHT LEVELING SWITCH REMOVAL/INSTALLATION .)
Verify that the resistance and continuity between the headlight leveling switch terminals is as indicated in the table in illustration using a tester.
- If not as indicated in the table in illustration, or if the resistance is not within the specification, replace the headlight leveling switch.
  
  Fig 1: Headlight Leveling Switch Terminal Resistance Chart
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 2: Inspecting Headlight Leveling Switch
  Courtesy of MAZDA MOTORS CORP.
Apply battery voltage to headlight leveling switch terminal E, and connect terminal A to ground.
Verify that the LED illuminates.
- If there is any malfunction, replace the headlight leveling switch.