Brake Light Noise Filter
1. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.


3. Install in the reverse order of removal.
Rear Window Defroster Noise Filter
1. Disconnect the negative battery cable.
2. Remove the rear package trim.
3. Remove in the order indicated in the table.


4. Install in the reverse order of removal.
Woofer inspection
Noise filter inspectionMazda 6 Service Manual: Nonreturn valve inspection
1. Remove the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION.)
2. Siphon the fuel from the fuel tank.
Note
Nonreturn valve is integrated in the fuel tank.
The nonreturn valve is normally closed by the spring force.
3. Verify that the nonreturn valve is closed.
If the nonretu ...
Mazda 6 Service Manual: Scheduled maintenance
SCHEDULED MAINTENANCE TABLE
For Europe (L.H.D. U.K.)
Chart symbols:
I : Inspect and repair, clean, adjust, or replace if necessary.
(Oil-permeated air cleaner elements cannot be cleaned using the air-blow
method.)
R : Replace
T : Tighten
L : Lubricate
Remarks:
To ensure efficient oper ...