1. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.


3. Install in the reverse order of removal.
Headlight Leveling Switch Removal Note
1. Insert your hand from the lower side of the dashboard and squeeze the tabs of the headlight leveling switch.
2. Pull the headlight leveling switch forward to remove it.


HEADLIGHT LEVELING SWITCH INSPECTION
1. Remove the headlight leveling switch. (See HEADLIGHT LEVELING SWITCH REMOVAL/INSTALLATION.)
2. Inspect for continuity between the headlight leveling switch terminals using an ohmmeter.
Front and rear fog light switch inspection
Back-up light switch removal/installationMazda 6 Service Manual: Dtc c1145, c1155, c1165, c1175
Caution
When attaching the tester lead to the DSC HU/CM connector the SST
(49 G066 004) must be used.
Diagnostic procedure
...
Mazda 6 Service Manual: Abs (abs/tcs) hu/cm system inspection
System Inspection
Preparation
1. Verify that the battery is fully charged. With the ignition switch on,
verify that the ABS and BRAKE system warning lights goes out after 2.4
seconds.
2. If the lights stays on after 2.4 seconds, the ABS (ABS/TCS) HU/CM
detects a failure. Follow the troubles ...